23176 Commits

Author	SHA1	Message	Date
Linus Torvalds	5695e51619	io_uring-worker.v3-2021-02-25 ... -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmA4JRkQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpoWqD/9dbbqe8L701U6May1A/4hRsqL4THTA2flx vNCNRBl6XV3l/wBCtL6waKy6tyO4lyM8XdUdEvo3Kxl2kGPb8eVfpyYL/+77HqyH ctT4RMrs+84Mxn+5N6cM97hS1qVI2moTxxyvOEl/JTB7BYrutz9gvAoeY3/Dto47 J66oSaPeuqJ32TyihxfQHVxQopJcqFzDjyoYHGDu6ATio1PXfaIdTu8ywVYSECAh pWI4rwnqdurGuHMNpxyL1bA6CT/jC7s+sqU7bUYUCgtYI3eG0u3V0bp5gAQQIgl9 5sxxE3DidYGAkYZsosrelshBtzGddLdz4Qrt2ungMYv8RsGNpFQ095jDPKDwFaZj bSvSsfplCo7iFsJByb1TtpNEOW8eAwi81PmBDVQ9Oq5P5ygTYno9GBDc/20ql0Fk q6wcX28coE3IBw44ne0hIwvBOtXV4WJyluG/gqOxfbTH+kOy3pDsN8lWcY/P4X0U yzdU2MLHe8BNMyYlUiBF47Amzt4ltr85P4XD3WZ4bX71iwri6HvrdGWLuuKwX+Ie 66QiIDDQIYZQ6NMMJWS9DGW3y3DBizpSXGxONbOw1J2bQdNmtToR0D2UnK/9UnKp msnvkUNk8fkYGS4aptpJ6HxbmjMEG5YtbiGlPj6fz5/7MTvhRjPxt7A0LWrUIdqR f88+sHUMqg== =oc8u -----END PGP SIGNATURE----- Merge tag 'io_uring-worker.v3-2021-02-25' of git://git.kernel.dk/linux-block Pull io_uring thread rewrite from Jens Axboe: "This converts the io-wq workers to be forked off the tasks in question instead of being kernel threads that assume various bits of the original task identity. This kills > 400 lines of code from io_uring/io-wq, and it's the worst part of the code. We've had several bugs in this area, and the worry is always that we could be missing some pieces for file types doing unusual things (recent /dev/tty example comes to mind, userfaultfd reads installing file descriptors is another fun one... - both of which need special handling, and I bet it's not the last weird oddity we'll find). With these identical workers, we can have full confidence that we're never missing anything. That, in itself, is a huge win. Outside of that, it's also more efficient since we're not wasting space and code on tracking state, or switching between different states. I'm sure we're going to find little things to patch up after this series, but testing has been pretty thorough, from the usual regression suite to production. Any issue that may crop up should be manageable. There's also a nice series of further reductions we can do on top of this, but I wanted to get the meat of it out sooner rather than later. The general worry here isn't that it's fundamentally broken. Most of the little issues we've found over the last week have been related to just changes in how thread startup/exit is done, since that's the main difference between using kthreads and these kinds of threads. In fact, if all goes according to plan, I want to get this into the 5.10 and 5.11 stable branches as well. That said, the changes outside of io_uring/io-wq are: - arch setup, simple one-liner to each arch copy_thread() implementation. - Removal of net and proc restrictions for io_uring, they are no longer needed or useful" * tag 'io_uring-worker.v3-2021-02-25' of git://git.kernel.dk/linux-block: (30 commits) io-wq: remove now unused IO_WQ_BIT_ERROR io_uring: fix SQPOLL thread handling over exec io-wq: improve manager/worker handling over exec io_uring: ensure SQPOLL startup is triggered before error shutdown io-wq: make buffered file write hashed work map per-ctx io-wq: fix race around io_worker grabbing io-wq: fix races around manager/worker creation and task exit io_uring: ensure io-wq context is always destroyed for tasks arch: ensure parisc/powerpc handle PF_IO_WORKER in copy_thread() io_uring: cleanup ->user usage io-wq: remove nr_process accounting io_uring: flag new native workers with IORING_FEAT_NATIVE_WORKERS net: remove cmsg restriction from io_uring based send/recvmsg calls Revert "proc: don't allow async path resolution of /proc/self components" Revert "proc: don't allow async path resolution of /proc/thread-self components" io_uring: move SQPOLL thread io-wq forked worker io-wq: make io_wq_fork_thread() available to other users io-wq: only remove worker from free_list, if it was there io_uring: remove io_identity io_uring: remove any grabbing of context ...	2021-02-27 08:29:02 -08:00
Linus Torvalds	d94d14008e	x86: ... - take into account HVA before retrying on MMU notifier race - fixes for nested AMD guests without NPT - allow INVPCID in guest without PCID - disable PML in hardware when not in use - MMU code cleanups -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmA3eMQUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroP6TQf5ARpUyq3oo+13albwg+zNca6hzR8i Vl7dpoR3bSJCN3sTYFnlL9eXw5TxgeUL2nqKqma6ddZDNDEBLT2Bq8rcFkbi4pUf n7av76EEq74HW/jlUhKVug7Q5Dm5DiKC6BOH3RVuKHbr6iZseyF3jXZSX0Ppf0yF gvoy6cGyMW60NVLN5tuGeOjVQ1fxziE0SqB90fXuiWgZ5rzIBfbqJV7EOOZsGO67 /LHSaEpvKutsc2a+Hx76yQNJjAbb2/O+4Bo5/RqfdqS5tRLGBzYggdJjLvAPvd6P pTNtDCnErvBZQfMedEQyHYuBL2Ca59fOp6i/ekOM2I+m7816+kSkdTMt2g== =iMHY -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull more KVM updates from Paolo Bonzini: "x86: - take into account HVA before retrying on MMU notifier race - fixes for nested AMD guests without NPT - allow INVPCID in guest without PCID - disable PML in hardware when not in use - MMU code cleanups: * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits) KVM: SVM: Fix nested VM-Exit on #GP interception handling KVM: vmx/pmu: Fix dummy check if lbr_desc->event is created KVM: x86/mmu: Consider the hva in mmu_notifier retry KVM: x86/mmu: Skip mmu_notifier check when handling MMIO page fault KVM: Documentation: rectify rst markup in KVM_GET_SUPPORTED_HV_CPUID KVM: nSVM: prepare guest save area while is_guest_mode is true KVM: x86/mmu: Remove a variety of unnecessary exports KVM: x86: Fold "write-protect large" use case into generic write-protect KVM: x86/mmu: Don't set dirty bits when disabling dirty logging w/ PML KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging KVM: x86: Further clarify the logic and comments for toggling log dirty KVM: x86: Move MMU's PML logic to common code KVM: x86/mmu: Make dirty log size hook (PML) a value, not a function KVM: x86/mmu: Expand on the comment in kvm_vcpu_ad_need_write_protect() KVM: nVMX: Disable PML in hardware when running L2 KVM: x86/mmu: Consult max mapping level when zapping collapsible SPTEs KVM: x86/mmu: Pass the memslot to the rmap callbacks KVM: x86/mmu: Split out max mapping level calculation to helper KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages KVM: nVMX: no need to undo inject_page_fault change on nested vmexit ...	2021-02-26 10:00:12 -08:00
Linus Torvalds	6fbd6cf85a	Kbuild updates for v5.12 ... - Fix false-positive build warnings for ARCH=ia64 builds - Optimize dictionary size for module compression with xz - Check the compiler and linker versions in Kconfig - Fix misuse of extra-y - Support DWARF v5 debug info - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x exceeded the limit - Add generic syscall{tbl,hdr}.sh for cleanups across arches - Minor cleanups of genksyms - Minor cleanups of Kconfig -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmA3zhgVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG0C4P/A5hUNFdkYI+EffAWZiHn69t0S8j M1GQkZildKu/yOfm6hp3mNwgHmYgw0aAuch1htkJuv+5rXRtoK77yw0xKbUqNHyO VqkJWQPVUXJbWIDiu332NaETHbFTWCnPZKGmzcbVOBHbYsXUJPp17gROQ9ke0fQN Ae6OV5WINhoS8UnjESWb3qOO87MdQTZ+9mP+NMnVh4kV1SUeMAXLFwFll66KZTkj GXB330N3p9L0wQVljhXpQ/YPOd76wJNPhJWJ9+hKLFbWsedovzlHb+duprh1z1xe 7LLaq9dEbXxe1Uz0qmK76lupXxilYMyUupTW9HIYtIsY8br8DIoBOG0bn46LVnuL /m+UQNfUFCYYePT7iZQNNc1DISQJrxme3bjq0PJzZTDukNnHJVahnj9x4RoNaF8j Dc+JME0r2i8Ccp28vgmaRgzvSsb8Xtw5icwRdwzIpyt1ubs/+tkd/GSaGzQo30Q8 m8y1WOjovHNX7OGnOaOWBGoQAX/2k/VHeAediMsPqWUoOxwsLHYxG/4KtgwbJ5vc gu/Fyk1GRDklZPpLdYFVvz8TGnqSDogJgF+7WolJ6YvPGAUIDAfd5Ky2sWayddlm wchc3sKDVyh3lov23h0WQVTvLO9xl+NZ6THxoAGdYeQ0DUu5OxwH8qje/UpWuo1a DchhNN+g5pa6n56Z =sLxb -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Fix false-positive build warnings for ARCH=ia64 builds - Optimize dictionary size for module compression with xz - Check the compiler and linker versions in Kconfig - Fix misuse of extra-y - Support DWARF v5 debug info - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x exceeded the limit - Add generic syscall{tbl,hdr}.sh for cleanups across arches - Minor cleanups of genksyms - Minor cleanups of Kconfig * tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (38 commits) initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD kbuild: remove deprecated 'always' and 'hostprogs-y/m' kbuild: parse C= and M= before changing the working directory kbuild: reuse this-makefile to define abs_srctree kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig kconfig: omit --oldaskconfig option for 'make config' kconfig: fix 'invalid option' for help option kconfig: remove dead code in conf_askvalue() kconfig: clean up nested if-conditionals in check_conf() kconfig: Remove duplicate call to sym_get_string_value() Makefile: Remove # characters from compiler string Makefile: reuse CC_VERSION_TEXT kbuild: check the minimum linker version in Kconfig kbuild: remove ld-version macro scripts: add generic syscallhdr.sh scripts: add generic syscalltbl.sh arch: syscalls: remove $(srctree)/ prefix from syscall tables arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work gen_compile_commands: prune some directories kbuild: simplify access to the kernel's version ...	2021-02-25 10:17:31 -08:00
Linus Torvalds	29c395c77a	Rework of the X86 irq stack handling: ... The irq stack switching was moved out of the ASM entry code in course of the entry code consolidation. It ended up being suboptimal in various ways. - Make the stack switching inline so the stackpointer manipulation is not longer at an easy to find place. - Get rid of the unnecessary indirect call. - Avoid the double stack switching in interrupt return and reuse the interrupt stack for softirq handling. - A objtool fix for CONFIG_FRAME_POINTER=y builds where it got confused about the stack pointer manipulation. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmA21OcTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoaX0D/9S0ud6oqbsIvI8LwhvYub63a2cjKP9 liHAJ7xwMYYVwzf0skwsPb/QE6+onCzdq0upJkgG/gEYm2KbiaMWZ4GgHdj0O7ER qXKJONDd36AGxSEdaVzLY5kPuD/mkomGk5QdaZaTmjruthkNzg4y/N2wXUBIMZR0 FdpSpp5fGspSZCn/DXDx6FjClwpLI53VclvDs6DcZ2DIBA0K+F/cSLb1UQoDLE1U hxGeuNa+GhKeeZ5C+q5giho1+ukbwtjMW9WnKHAVNiStjm0uzdqq7ERGi/REvkcB LY62u5uOSW1zIBMmzUjDDQEqvypB0iFxFCpN8g9sieZjA0zkaUioRTQyR+YIQ8Cp l8LLir0dVQivR1bHghHDKQJUpdw/4zvDj4mMH10XHqbcOtIxJDOJHC5D00ridsAz OK0RlbAJBl9FTdLNfdVReBCoehYAO8oefeyMAG12nZeSh5XVUWl238rvzmzIYNhG cEtkSx2wIUNEA+uSuI+xvfmwpxL7voTGvqmiRDCAFxyO7Bl/GBu9OEBFA1eOvHB+ +wTmPDMswRetQNh4QCRXzk1JzP1Wk5CobUL9iinCWFoTJmnsPPSOWlosN6ewaNXt kYFpRLy5xt9EP7dlfgBSjiRlthDhTdMrFjD5bsy1vdm1w7HKUo82lHa4O8Hq3PHS tinKICUqRsbjig== =Sqr1 -----END PGP SIGNATURE----- Merge tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 irq entry updates from Thomas Gleixner: "The irq stack switching was moved out of the ASM entry code in course of the entry code consolidation. It ended up being suboptimal in various ways. This reworks the X86 irq stack handling: - Make the stack switching inline so the stackpointer manipulation is not longer at an easy to find place. - Get rid of the unnecessary indirect call. - Avoid the double stack switching in interrupt return and reuse the interrupt stack for softirq handling. - A objtool fix for CONFIG_FRAME_POINTER=y builds where it got confused about the stack pointer manipulation" * tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix stack-swizzle for FRAME_POINTER=y um: Enforce the usage of asm-generic/softirq_stack.h x86/softirq/64: Inline do_softirq_own_stack() softirq: Move do_softirq_own_stack() to generic asm header softirq: Move __ARCH_HAS_DO_SOFTIRQ to Kconfig x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK x86/softirq: Remove indirection in do_softirq_own_stack() x86/entry: Use run_sysvec_on_irqstack_cond() for XEN upcall x86/entry: Convert device interrupts to inline stack switching x86/entry: Convert system vectors to irq stack macro x86/irq: Provide macro for inlining irq stack switching x86/apic: Split out spurious handling code x86/irq/64: Adjust the per CPU irq stack pointer by 8 x86/irq: Sanitize irq stack tracking x86/entry: Fix instrumentation annotation	2021-02-24 16:32:23 -08:00
Jens Axboe	0100e6bbdb	arch: ensure parisc/powerpc handle PF_IO_WORKER in copy_thread() ... In the arch addition of PF_IO_WORKER, I missed parisc and powerpc for some reason. Fix that up, ensuring they handle PF_IO_WORKER like they do PF_KTHREAD in copy_thread(). Reported-by: Bruno Goncalves <bgoncalv@redhat.com> Fixes: 4727dc20e0 ("arch: setup PF_IO_WORKER threads like PF_KTHREAD") Signed-off-by: Jens Axboe <axboe@kernel.dk>	2021-02-23 20:33:33 -07:00
Linus Torvalds	7d6beb71da	idmapped-mounts-v5.12 ... -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCYCegywAKCRCRxhvAZXjc ouJ6AQDlf+7jCQlQdeKKoN9QDFfMzG1ooemat36EpRRTONaGuAD8D9A4sUsG4+5f 4IU5Lj9oY4DEmF8HenbWK2ZHsesL2Qg= =yPaw -----END PGP SIGNATURE----- Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull idmapped mounts from Christian Brauner: "This introduces idmapped mounts which has been in the making for some time. Simply put, different mounts can expose the same file or directory with different ownership. This initial implementation comes with ports for fat, ext4 and with Christoph's port for xfs with more filesystems being actively worked on by independent people and maintainers. Idmapping mounts handle a wide range of long standing use-cases. Here are just a few: - Idmapped mounts make it possible to easily share files between multiple users or multiple machines especially in complex scenarios. For example, idmapped mounts will be used in the implementation of portable home directories in systemd-homed.service(8) where they allow users to move their home directory to an external storage device and use it on multiple computers where they are assigned different uids and gids. This effectively makes it possible to assign random uids and gids at login time. - It is possible to share files from the host with unprivileged containers without having to change ownership permanently through chown(2). - It is possible to idmap a container's rootfs and without having to mangle every file. For example, Chromebooks use it to share the user's Download folder with their unprivileged containers in their Linux subsystem. - It is possible to share files between containers with non-overlapping idmappings. - Filesystem that lack a proper concept of ownership such as fat can use idmapped mounts to implement discretionary access (DAC) permission checking. - They allow users to efficiently changing ownership on a per-mount basis without having to (recursively) chown(2) all files. In contrast to chown (2) changing ownership of large sets of files is instantenous with idmapped mounts. This is especially useful when ownership of a whole root filesystem of a virtual machine or container is changed. With idmapped mounts a single syscall mount_setattr syscall will be sufficient to change the ownership of all files. - Idmapped mounts always take the current ownership into account as idmappings specify what a given uid or gid is supposed to be mapped to. This contrasts with the chown(2) syscall which cannot by itself take the current ownership of the files it changes into account. It simply changes the ownership to the specified uid and gid. This is especially problematic when recursively chown(2)ing a large set of files which is commong with the aforementioned portable home directory and container and vm scenario. - Idmapped mounts allow to change ownership locally, restricting it to specific mounts, and temporarily as the ownership changes only apply as long as the mount exists. Several userspace projects have either already put up patches and pull-requests for this feature or will do so should you decide to pull this: - systemd: In a wide variety of scenarios but especially right away in their implementation of portable home directories. https://systemd.io/HOME_DIRECTORY/ - container runtimes: containerd, runC, LXD:To share data between host and unprivileged containers, unprivileged and privileged containers, etc. The pull request for idmapped mounts support in containerd, the default Kubernetes runtime is already up for quite a while now: https://github.com/containerd/containerd/pull/4734 - The virtio-fs developers and several users have expressed interest in using this feature with virtual machines once virtio-fs is ported. - ChromeOS: Sharing host-directories with unprivileged containers. I've tightly synced with all those projects and all of those listed here have also expressed their need/desire for this feature on the mailing list. For more info on how people use this there's a bunch of talks about this too. Here's just two recent ones: https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf https://fosdem.org/2021/schedule/event/containers_idmap/ This comes with an extensive xfstests suite covering both ext4 and xfs: https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts It covers truncation, creation, opening, xattrs, vfscaps, setid execution, setgid inheritance and more both with idmapped and non-idmapped mounts. It already helped to discover an unrelated xfs setgid inheritance bug which has since been fixed in mainline. It will be sent for inclusion with the xfstests project should you decide to merge this. In order to support per-mount idmappings vfsmounts are marked with user namespaces. The idmapping of the user namespace will be used to map the ids of vfs objects when they are accessed through that mount. By default all vfsmounts are marked with the initial user namespace. The initial user namespace is used to indicate that a mount is not idmapped. All operations behave as before and this is verified in the testsuite. Based on prior discussions we want to attach the whole user namespace and not just a dedicated idmapping struct. This allows us to reuse all the helpers that already exist for dealing with idmappings instead of introducing a whole new range of helpers. In addition, if we decide in the future that we are confident enough to enable unprivileged users to setup idmapped mounts the permission checking can take into account whether the caller is privileged in the user namespace the mount is currently marked with. The user namespace the mount will be marked with can be specified by passing a file descriptor refering to the user namespace as an argument to the new mount_setattr() syscall together with the new MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern of extensibility. The following conditions must be met in order to create an idmapped mount: - The caller must currently have the CAP_SYS_ADMIN capability in the user namespace the underlying filesystem has been mounted in. - The underlying filesystem must support idmapped mounts. - The mount must not already be idmapped. This also implies that the idmapping of a mount cannot be altered once it has been idmapped. - The mount must be a detached/anonymous mount, i.e. it must have been created by calling open_tree() with the OPEN_TREE_CLONE flag and it must not already have been visible in the filesystem. The last two points guarantee easier semantics for userspace and the kernel and make the implementation significantly simpler. By default vfsmounts are marked with the initial user namespace and no behavioral or performance changes are observed. The manpage with a detailed description can be found here: 1d7b902e28 In order to support idmapped mounts, filesystems need to be changed and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The patches to convert individual filesystem are not very large or complicated overall as can be seen from the included fat, ext4, and xfs ports. Patches for other filesystems are actively worked on and will be sent out separately. The xfstestsuite can be used to verify that port has been done correctly. The mount_setattr() syscall is motivated independent of the idmapped mounts patches and it's been around since July 2019. One of the most valuable features of the new mount api is the ability to perform mounts based on file descriptors only. Together with the lookup restrictions available in the openat2() RESOLVE_* flag namespace which we added in v5.6 this is the first time we are close to hardened and race-free (e.g. symlinks) mounting and path resolution. While userspace has started porting to the new mount api to mount proper filesystems and create new bind-mounts it is currently not possible to change mount options of an already existing bind mount in the new mount api since the mount_setattr() syscall is missing. With the addition of the mount_setattr() syscall we remove this last restriction and userspace can now fully port to the new mount api, covering every use-case the old mount api could. We also add the crucial ability to recursively change mount options for a whole mount tree, both removing and adding mount options at the same time. This syscall has been requested multiple times by various people and projects. There is a simple tool available at https://github.com/brauner/mount-idmapped that allows to create idmapped mounts so people can play with this patch series. I'll add support for the regular mount binary should you decide to pull this in the following weeks: Here's an example to a simple idmapped mount of another user's home directory: u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt u1001@f2-vm:/$ ls -al /home/ubuntu/ total 28 drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 . drwxr-xr-x 4 root root 4096 Oct 28 04:00 .. -rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile -rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ ls -al /mnt/ total 28 drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 . drwxr-xr-x 29 root root 4096 Oct 28 22:01 .. -rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile -rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ touch /mnt/my-file u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file u1001@f2-vm:/$ ls -al /mnt/my-file -rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file u1001@f2-vm:/$ ls -al /home/ubuntu/my-file -rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file u1001@f2-vm:/$ getfacl /mnt/my-file getfacl: Removing leading '/' from absolute path names # file: mnt/my-file # owner: u1001 # group: u1001 user::rw- user:u1001:rwx group::rw- mask::rwx other::r-- u1001@f2-vm:/$ getfacl /home/ubuntu/my-file getfacl: Removing leading '/' from absolute path names # file: home/ubuntu/my-file # owner: ubuntu # group: ubuntu user::rw- user:ubuntu:rwx group::rw- mask::rwx other::r--" * tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits) xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl xfs: support idmapped mounts ext4: support idmapped mounts fat: handle idmapped mounts tests: add mount_setattr() selftests fs: introduce MOUNT_ATTR_IDMAP fs: add mount_setattr() fs: add attr_flags_to_mnt_flags helper fs: split out functions to hold writers namespace: only take read lock in do_reconfigure_mnt() mount: make {lock,unlock}_mount_hash() static namespace: take lock_mount_hash() directly when changing flags nfs: do not export idmapped mounts overlayfs: do not mount on top of idmapped mounts ecryptfs: do not mount on top of idmapped mounts ima: handle idmapped mounts apparmor: handle idmapped mounts fs: make helpers idmap mount aware exec: handle idmapped mounts would_dump: handle idmapped mounts ...	2021-02-23 13:39:45 -08:00
Linus Torvalds	21a6ab2131	Modules updates for v5.12 ... Summary of modules changes for the 5.12 merge window: - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export types were introduced between 2006 - 2008. All the of the unused symbols have been long removed and gpl future symbols were converted to gpl quite a long time ago, and I don't believe these export types have been used ever since. So, I think it should be safe to retire those export types now. (Christoph Hellwig) - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig) - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as it is the only caller (Christoph Hellwig) - Unexport find_module() and module_mutex and fix the last module callers to not rely on these anymore. Make module_mutex internal to the module loader. (Christoph Hellwig) - Harden ELF checks on module load and validate ELF structures before checking the module signature (Frank van der Linden) - Fix undefined symbol warning for clang (Fangrui Song) - Fix smatch warning (Dan Carpenter) Signed-off-by: Jessica Yu <jeyu@kernel.org> -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEVrp26glSWYuDNrCUwEV+OM47wXIFAmA0/KMQHGpleXVAa2Vy bmVsLm9yZwAKCRDARX44zjvBcu0uD/4nmRp18EKAtdUZivsZHat0aEWGlkmrVueY 5huYw6iwM8b/wIAl3xwLki1Iv0/l0a83WXZhLG4ekl0/Nj8kgllA+jtBrZWpoLMH CZusN5dS9YwwyD2vu3ak83ARcehcDEPeA9thvc3uRFGis6Hi4bt1rkzGdrzsgqR4 tybfN4qaQx4ZAKFxA8bnS58l7QTFwUzTxJfM6WWzl1Q+mLZDr/WP+loJ/f1/oFFg ufN31KrqqFpdQY5UKq5P4H8FVq/eXE1Mwl8vo3HsnAj598fznyPUmA3D/j+N4GuR sTGBVZ9CSehUj7uZRs+Qgg6Bd+y3o44N29BrdZWA6K3ieTeQQpA+VgPUNrDBjGhP J/9Y4ms4PnuNEWWRaa73m9qsVqAsjh9+T2xp9PYn9uWLCM8BvQFtWcY7tw4/nB0/ INmyiP/tIRpwWkkBl47u1TPR09FzBBGDZjBiSn3lm3VX+zCYtHoma5jWyejG11cf ybDrTsci9ANyHNP2zFQsUOQJkph78PIal0i3k4ODqGJvaC0iEIH3Xjv+0dmE14rq kGRrG/HN6HhMZPjashudVUktyTZ63+PJpfFlQbcUzdvjQQIkzW0vrCHMWx9vD1xl Na7vZLl4Nb03WSJp6saY6j2YSRKL0poGETzGqrsUAHEhpEOPHduaiCVlAr/EmeMk p6SrWv8+UQ== =T29Q -----END PGP SIGNATURE----- Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export types were introduced between 2006 - 2008. All the of the unused symbols have been long removed and gpl future symbols were converted to gpl quite a long time ago, and I don't believe these export types have been used ever since. So, I think it should be safe to retire those export types now (Christoph Hellwig) - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig) - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as it is the only caller (Christoph Hellwig) - Unexport find_module() and module_mutex and fix the last module callers to not rely on these anymore. Make module_mutex internal to the module loader (Christoph Hellwig) - Harden ELF checks on module load and validate ELF structures before checking the module signature (Frank van der Linden) - Fix undefined symbol warning for clang (Fangrui Song) - Fix smatch warning (Dan Carpenter) * tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: potential uninitialized return in module_kallsyms_on_each_symbol() module: remove EXPORT_UNUSED_SYMBOL* module: remove EXPORT_SYMBOL_GPL_FUTURE module: move struct symsearch to module.c module: pass struct find_symbol_args to find_symbol module: merge each_symbol_section into find_symbol module: remove each_symbol_in_section module: mark module_mutex static kallsyms: only build {,module_}kallsyms_on_each_symbol when required kallsyms: refactor {,module_}kallsyms_on_each_symbol module: use RCU to synchronize find_module module: unexport find_module and module_mutex drm: remove drm_fb_helper_modinit powerpc/powernv: remove get_cxl_module module: harden ELF info handling module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols	2021-02-23 10:15:33 -08:00
Linus Torvalds	b12b472496	powerpc updates for 5.12 ... A large series adding wrappers for our interrupt handlers, so that irq/nmi/user tracking can be isolated in the wrappers rather than spread in each handler. Conversion of the 32-bit syscall handling into C. A series from Nick to streamline our TLB flushing when using the Radix MMU. Switch to using queued spinlocks by default for 64-bit server CPUs. A rework of our PCI probing so that it happens later in boot, when more generic infrastructure is available. Two small fixes to allow 32-bit little-endian processes to run on 64-bit kernels. Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, Zheng Yongjun. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmAzMagTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgAbBD/wMS2g1Q9oAGZPsx2NGd2RoeAauGxUs Yj6cZVmR+oa6sJyFYgEG7dT7tcwJITQxLBD3HpsHSnJ/rLrMloE33+cZNA9c4STz 0mlzm3R7M5pOgcEqZglsgLP0RQeUuHSSF01g0kf1N3r+HYtmbmPjuUIl8CnAjlbT iMD2ZN2p8/r3kDDht0iBO534HUpsqhc00duSZgQhsV/PR7ZWVxoPk7PEJeo4vXlJ 77986F7J5NLUTjMiLv5lTx49FcPbRd7a1jubsBtahJrwXj2GVvuy2i86G7HY+a+B eSxN7zJQgaFeLo0YPo7fZLBI0MAsIQt3nnZhKX0TMglbv/K8Aq64xiJqsVQdJ883 CeEt0HvSJhsSC0C4O595NEINfDhDd+5IeSF9MvsujYXiUKRXtRkm1EPuAzTcZIzW NwkCLRo33NMXa+khMKaiqF/g7INayPUXoWESx75NXFsuNfcORvstkeUuEoi5GwJo TSlmosFqwRjghQ8eTLZuWBzmh3EpPGdtC4gm6D+lbzhzjah5c/1whyuLqra275kK E3Qt0/V0ixKyvlG7MI5yYh3L7+R/hrsflH7xIJJxZp2DW6mwBJzQYmkxDbSS8PzK nWien2XgpIQhSFat3QqreEFSfNkzdN2MClVi2Y1hpAgi+2Zm9rPdPNGcQI+DSOsB kpJkjOjWNJU/PQ== =dB2S -----END PGP SIGNATURE----- Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A large series adding wrappers for our interrupt handlers, so that irq/nmi/user tracking can be isolated in the wrappers rather than spread in each handler. - Conversion of the 32-bit syscall handling into C. - A series from Nick to streamline our TLB flushing when using the Radix MMU. - Switch to using queued spinlocks by default for 64-bit server CPUs. - A rework of our PCI probing so that it happens later in boot, when more generic infrastructure is available. - Two small fixes to allow 32-bit little-endian processes to run on 64-bit kernels. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun. * tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits) powerpc/perf: Adds support for programming of Thresholding in P10 powerpc/pci: Remove unimplemented prototypes powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user() powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size() powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user() powerpc/64: Fix stack trace not displaying final frame powerpc/time: Remove get_tbl() powerpc/time: Avoid using get_tbl() spi: mpc52xx: Avoid using get_tbl() powerpc/syscall: Avoid storing 'current' in another pointer powerpc/32: Handle bookE debugging in C in syscall entry/exit powerpc/syscall: Do not check unsupported scv vector on PPC32 powerpc/32: Remove the counter in global_dbcr0 powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry powerpc/syscall: implement system call entry/exit logic in C for PPC32 powerpc/32: Always save non volatile GPRs at syscall entry powerpc/syscall: Change condition to check MSR_RI powerpc/syscall: Save r3 in regs->orig_r3 powerpc/syscall: Use is_compat_task() powerpc/syscall: Make interrupt.c buildable on PPC32 ...	2021-02-22 14:34:00 -08:00
David Stevens	4a42d848db	KVM: x86/mmu: Consider the hva in mmu_notifier retry ... Track the range being invalidated by mmu_notifier and skip page fault retries if the fault address is not affected by the in-progress invalidation. Handle concurrent invalidations by finding the minimal range which includes all ranges being invalidated. Although the combined range may include unrelated addresses and cannot be shrunk as individual invalidation operations complete, it is unlikely the marginal gains of proper range tracking are worth the additional complexity. The primary benefit of this change is the reduction in the likelihood of extreme latency when handing a page fault due to another thread having been preempted while modifying host virtual addresses. Signed-off-by: David Stevens <stevensd@chromium.org> Message-Id: <20210222024522.1751719-3-stevensd@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	2021-02-22 13:16:53 -05:00
Linus Torvalds	a99163e9e7	Devicetree updates for v5.12: ... - Sync dtc to upstream version v1.6.0-51-g183df9e9c2b9 and build host fdtoverlay - Add kbuild support to build DT overlays (%.dtbo) - Drop NULLifying match table in of_match_device(). In preparation for this, there are several driver cleanups to use (of_)?device_get_match_data(). - Drop pointless wrappers from DT struct device API - Convert USB binding schemas to use graph schema and remove old plain text graph binding doc - Convert spi-nor and v3d GPU bindings to DT schema - Tree wide schema fixes for if/then schemas, array size constraints, and undocumented compatible strings in examples - Handle 'no-map' correctly for already reserved memblock regions -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmAz1GEQHHJvYmhAa2Vy bmVsLm9yZwAKCRD6+121jbxhw55/D/955O2f5Gjp7bXvdoSucZtks/lqlC/eIAAw An5pjBL+o1urXsvafEMYemwmnwq/U4vy0aJRoAK1+MiI4masb56ET0KN5LsOudki b3M/O16RqGF31+blWyoxseZnZh6KsKzIRoE5XAtbr/QAnpdI0/5BgGoWSWYtDk2v LddL650/BieyvzdnFTLWCMAxd6DW0P9SI+8N3E+XlxAWCYQrLCqVELHbkrxAGCuN CggHIIiNf2K7z4UopVsGjnUwML9YRHXc9wOpF1c4CBrLu9TfDvdQ4OnNcnxcl/Sp E2FTHG0jSVm3VJRBbk4e68uvt3HrJJWsYnMtu2QTweGC/GbeUr9LJ0MIbSwp+rsL FEqCMFWOniq27eJBk6jHckaoBl93AHQlIGdJR/pFAi9Ijt32tUdVG5kqD/Tl+xKm njPcjVjWilr2ssfZ4tUggzPp2fjrau88ZS8qLja31vElzvULeA67KjEtG0RZAtwg ywfATiCaT096pR9v2VYuL/5NNnZFxHx3hWsOH1rcsyPk0BLguU3dkrAn28XBVQFd cOPfR3T/wsT0wHDht2aXPSM0hBiejFmvLhebGuJN9lqG+Pc1f87xiCT3pM7wymtJ iqTMrQ7dUgjQgU91PjatdB17tlnGHe0hh8AiuhQoPgOprpRKszG+rBFJLG3yRnl7 QmLZnQTIhw== =9V4A -----END PGP SIGNATURE----- Merge tag 'devicetree-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Sync dtc to upstream version v1.6.0-51-g183df9e9c2b9 and build host fdtoverlay - Add kbuild support to build DT overlays (%.dtbo) - Drop NULLifying match table in of_match_device(). In preparation for this, there are several driver cleanups to use (of_)?device_get_match_data(). - Drop pointless wrappers from DT struct device API - Convert USB binding schemas to use graph schema and remove old plain text graph binding doc - Convert spi-nor and v3d GPU bindings to DT schema - Tree wide schema fixes for if/then schemas, array size constraints, and undocumented compatible strings in examples - Handle 'no-map' correctly for already reserved memblock regions * tag 'devicetree-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits) driver core: platform: Drop of_device_node_put() wrapper of: Remove of_dev_{get,put}() dt-bindings: usb: Change descibe to describe in usbmisc-imx.txt dt-bindings: can: rcar_canfd: Group tuples in pin control properties dt-bindings: power: renesas,apmu: Group tuples in cpus properties dt-bindings: mtd: spi-nor: Convert to DT schema format dt-bindings: Use portable sort for version cmp dt-bindings: ethernet-controller: fix fixed-link specification dt-bindings: irqchip: Add node name to PRUSS INTC dt-bindings: interconnect: Fix the expected number of cells dt-bindings: Fix errors in 'if' schemas dt-bindings: iommu: renesas,ipmmu-vmsa: Make 'power-domains' conditionally required dt-bindings: Fix undocumented compatible strings in examples kbuild: Add support to build overlays (%.dtbo) scripts: dtc: Remove the unused fdtdump.c file scripts: dtc: Build fdtoverlay tool scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 scripts: dtc: Fetch fdtoverlay.c from external DTC project dt-bindings: thermal: sun8i: Fix misplaced schema keyword in compatible strings dt-bindings: iio: dac: Fix AD5686 references ...	2021-02-22 10:05:12 -08:00
Linus Torvalds	31caf8b2a8	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 ... Pull crypto update from Herbert Xu: "API: - Restrict crypto_cipher to internal API users only. Algorithms: - Add x86 aesni acceleration for cts. - Improve x86 aesni acceleration for xts. - Remove x86 acceleration of some uncommon algorithms. - Remove RIPE-MD, Tiger and Salsa20. - Remove tnepres. - Add ARM acceleration for BLAKE2s and BLAKE2b. Drivers: - Add Keem Bay OCS HCU driver. - Add Marvell OcteonTX2 CPT PF driver. - Remove PicoXcell driver. - Remove mediatek driver" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (154 commits) hwrng: timeriomem - Use device-managed registration API crypto: hisilicon/qm - fix printing format issue crypto: hisilicon/qm - do not reset hardware when CE happens crypto: hisilicon/qm - update irqflag crypto: hisilicon/qm - fix the value of 'QM_SQC_VFT_BASE_MASK_V2' crypto: hisilicon/qm - fix request missing error crypto: hisilicon/qm - removing driver after reset crypto: octeontx2 - fix -Wpointer-bool-conversion warning crypto: hisilicon/hpre - enable Elliptic curve cryptography crypto: hisilicon - PASID fixed on Kunpeng 930 crypto: hisilicon/qm - fix use of 'dma_map_single' crypto: hisilicon/hpre - tiny fix crypto: hisilicon/hpre - adapt the number of clusters crypto: cpt - remove casting dma_alloc_coherent crypto: keembay-ocs-aes - Fix 'q' assignment during CCM B0 generation crypto: xor - Fix typo of optimization hwrng: optee - Use device-managed registration API crypto: arm64/crc-t10dif - move NEON yield to C code crypto: arm64/aes-ce-mac - simplify NEON yield crypto: arm64/aes-neonbs - remove NEON yield calls ...	2021-02-21 17:23:56 -08:00
Masahiro Yamada	29c5c3ac63	arch: syscalls: remove $(srctree)/ prefix from syscall tables ... The 'syscall' variables are not directly used in the commands. Remove the $(srctree)/ prefix because we can rely on VPATH. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>	2021-02-22 08:22:03 +09:00
Masahiro Yamada	865fa29f7d	arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work ... The rules in these Makefiles cannot detect the command line change because the prerequisite 'FORCE' is missing. Adding 'FORCE' will result in the headers being rebuilt every time because the 'targets' additions are also wrong; the file paths in 'targets' must be relative to the current Makefile. Fix all of them so the if_changed rules work correctly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	2021-02-22 08:21:55 +09:00
Linus Torvalds	3e10585335	x86: ... - Support for userspace to emulate Xen hypercalls - Raise the maximum number of user memslots - Scalability improvements for the new MMU. Instead of the complex "fast page fault" logic that is used in mmu.c, tdp_mmu.c uses an rwlock so that page faults are concurrent, but the code that can run against page faults is limited. Right now only page faults take the lock for reading; in the future this will be extended to some cases of page table destruction. I hope to switch the default MMU around 5.12-rc3 (some testing was delayed due to Chinese New Year). - Cleanups for MAXPHYADDR checks - Use static calls for vendor-specific callbacks - On AMD, use VMLOAD/VMSAVE to save and restore host state - Stop using deprecated jump label APIs - Workaround for AMD erratum that made nested virtualization unreliable - Support for LBR emulation in the guest - Support for communicating bus lock vmexits to userspace - Add support for SEV attestation command - Miscellaneous cleanups PPC: - Support for second data watchpoint on POWER10 - Remove some complex workarounds for buggy early versions of POWER9 - Guest entry/exit fixes ARM64 - Make the nVHE EL2 object relocatable - Cleanups for concurrent translation faults hitting the same page - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Simplification of the early init hypercall handling Non-KVM changes (with acks): - Detection of contended rwlocks (implemented only for qrwlocks, because KVM only needs it for x86) - Allow __DISABLE_EXPORTS from assembly code - Provide a saner follow_pfn replacements for modules -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmApSRgUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroOc7wf9FnlinKoTFaSk7oeuuhF/CoCVwSFs Z9+A2sNI99tWHQxFR6dyDkEFeQoXnqSxfLHtUVIdH/JnTg0FkEvFz3NK+0PzY1PF PnGNbSoyhP58mSBG4gbBAxdF3ZJZMB8GBgYPeR62PvMX2dYbcHqVBNhlf6W4MQK4 5mAUuAnbf19O5N267sND+sIg3wwJYwOZpRZB7PlwvfKAGKf18gdBz5dQ/6Ej+apf P7GODZITjqM5Iho7SDm/sYJlZprFZT81KqffwJQHWFMEcxFgwzrnYPx7J3gFwRTR eeh9E61eCBDyCTPpHROLuNTVBqrAioCqXLdKOtO5gKvZI3zmomvAsZ8uXQ== =uFZU -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "x86: - Support for userspace to emulate Xen hypercalls - Raise the maximum number of user memslots - Scalability improvements for the new MMU. Instead of the complex "fast page fault" logic that is used in mmu.c, tdp_mmu.c uses an rwlock so that page faults are concurrent, but the code that can run against page faults is limited. Right now only page faults take the lock for reading; in the future this will be extended to some cases of page table destruction. I hope to switch the default MMU around 5.12-rc3 (some testing was delayed due to Chinese New Year). - Cleanups for MAXPHYADDR checks - Use static calls for vendor-specific callbacks - On AMD, use VMLOAD/VMSAVE to save and restore host state - Stop using deprecated jump label APIs - Workaround for AMD erratum that made nested virtualization unreliable - Support for LBR emulation in the guest - Support for communicating bus lock vmexits to userspace - Add support for SEV attestation command - Miscellaneous cleanups PPC: - Support for second data watchpoint on POWER10 - Remove some complex workarounds for buggy early versions of POWER9 - Guest entry/exit fixes ARM64: - Make the nVHE EL2 object relocatable - Cleanups for concurrent translation faults hitting the same page - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Simplification of the early init hypercall handling Non-KVM changes (with acks): - Detection of contended rwlocks (implemented only for qrwlocks, because KVM only needs it for x86) - Allow __DISABLE_EXPORTS from assembly code - Provide a saner follow_pfn replacements for modules" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (192 commits) KVM: x86/xen: Explicitly pad struct compat_vcpu_info to 64 bytes KVM: selftests: Don't bother mapping GVA for Xen shinfo test KVM: selftests: Fix hex vs. decimal snafu in Xen test KVM: selftests: Fix size of memslots created by Xen tests KVM: selftests: Ignore recently added Xen tests' build output KVM: selftests: Add missing header file needed by xAPIC IPI tests KVM: selftests: Add operand to vmsave/vmload/vmrun in svm.c KVM: SVM: Make symbol 'svm_gp_erratum_intercept' static locking/arch: Move qrwlock.h include after qspinlock.h KVM: PPC: Book3S HV: Fix host radix SLB optimisation with hash guests KVM: PPC: Book3S HV: Ensure radix guest has no SLB entries KVM: PPC: Don't always report hash MMU capability for P9 < DD2.2 KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path KVM: PPC: remove unneeded semicolon KVM: PPC: Book3S HV: Use POWER9 SLBIA IH=6 variant to clear SLB KVM: PPC: Book3S HV: No need to clear radix host SLB before loading HPT guest KVM: PPC: Book3S HV: Fix radix guest SLB side channel KVM: PPC: Book3S HV: Remove support for running HPT guest on RPT host without mixed mode support KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR KVM: PPC: Book3S HV: Add infrastructure to support 2nd DAWR ...	2021-02-21 13:31:43 -08:00
Linus Torvalds	d310ec03a3	The performance event updates for v5.12 are: ... - Add CPU-PMU support for Intel Sapphire Rapids CPUs - Extend the perf ABI with PERF_SAMPLE_WEIGHT_STRUCT, to offer two-parameter sampling event feedback. Not used yet, but is intended for Golden Cove CPU-PMU, which can provide both the instruction latency and the cache latency information for memory profiling events. - Remove experimental, default-disabled perfmon-v4 counter_freezing support that could only be enabled via a boot option. The hardware is hopelessly broken, we'd like to make sure nobody starts relying on this, as it would only end in tears. - Fix energy/power events on Intel SPR platforms - Simplify the uprobes resume_execution() logic - Misc smaller fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmAtf7kRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iJ2xAAvygKF8hm/UAGyT2R3iEruO49wRrmUfgt 13iBBA1DotKw2b8F5UN5MqjfwS8UgGKuAd8agvQ6XXANpnJ5mpy0nrzgjEXUx4j+ sQUqL7vxSdZ5J3kKblSZ4QoMzLVYSUkEDmw818vsa4eFWN8z58FJsv+ySegIFbXx +I3hF1O9a8MERZBUz4T5xHlgcbSDGEX6EvYRcO+zZ0rXfARfo9StfHYv1V53j6iY EOotFEKEn/5naczAd/sQo1SE1IgHtX2cbjOaKF7LulgEwZQWHpdKq0gww6nFK5yz XMSE9oXAFXRkRCJbrSqC0Dvrrf8hdlxWbKYbj9L7XILoxw199AdOBDbliJm6P/UH 6+JSEu/N4R0TFYc7TX6yef7ncw12e+64USjKOlWWwww97rVWWH1/tFTdlXhS6s+d jVI3yEECKyZlddrDdsetRdUj+QKyZQfDqbMXPXiDTv9P6AFqBvNLZYT0UPU3akk5 jXueHJQYSSgqnN+eRaIwvm4ZYWa031YHJXxiq2E89RnzL4JJArBYaddpukgxTYka c6Tn8L7f4zP5Bghu7hHv5Vy69i1N/3YvzUoYc6ljjmapgAJzxzq/yoEKrBlKnjtA MrstHhnwnPJl+PKjlbLpjl74rtcCiKJxjVhm+a5UbEcYoVuzJ86lmQK2WrLaoCTU B/zFplUF8C4= =BCcg -----END PGP SIGNATURE----- Merge tag 'perf-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull performance event updates from Ingo Molnar: - Add CPU-PMU support for Intel Sapphire Rapids CPUs - Extend the perf ABI with PERF_SAMPLE_WEIGHT_STRUCT, to offer two-parameter sampling event feedback. Not used yet, but is intended for Golden Cove CPU-PMU, which can provide both the instruction latency and the cache latency information for memory profiling events. - Remove experimental, default-disabled perfmon-v4 counter_freezing support that could only be enabled via a boot option. The hardware is hopelessly broken, we'd like to make sure nobody starts relying on this, as it would only end in tears. - Fix energy/power events on Intel SPR platforms - Simplify the uprobes resume_execution() logic - Misc smaller fixes. * tag 'perf-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/rapl: Fix psys-energy event on Intel SPR platform perf/x86/rapl: Only check lower 32bits for RAPL energy counters perf/x86/rapl: Add msr mask support perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[] perf/x86/intel: Support CPUID 10.ECX to disable fixed counters perf/x86/intel: Add perf core PMU support for Sapphire Rapids perf/x86/intel: Filter unsupported Topdown metrics event perf/x86/intel: Factor out intel_update_topdown_event() perf/core: Add PERF_SAMPLE_WEIGHT_STRUCT perf/intel: Remove Perfmon-v4 counter_freezing support x86/perf: Use static_call for x86_pmu.guest_get_msrs perf/x86/intel/uncore: With > 8 nodes, get pci bus die id from NUMA info perf/x86/intel/uncore: Store the logical die id instead of the physical die id. x86/kprobes: Do not decode opcode in resume_execution()	2021-02-21 12:49:32 -08:00
Linus Torvalds	657bd90c93	Scheduler updates for v5.12: ... [ NOTE: unfortunately this tree had to be freshly rebased today, it's a same-content tree of 82891be90f3c (-next published) merged with v5.11. The main reason for the rebase was an authorship misattribution problem with a new commit, which we noticed in the last minute, and which we didn't want to be merged upstream. The offending commit was deep in the tree, and dependent commits had to be rebased as well. ] - Core scheduler updates: - Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the preempt=none/voluntary/full boot options (default: full), to allow distros to build a PREEMPT kernel but fall back to close to PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling behavior via a boot time selection. There's also the /debug/sched_debug switch to do this runtime. This feature is implemented via runtime patching (a new variant of static calls). The scope of the runtime patching can be best reviewed by looking at the sched_dynamic_update() function in kernel/sched/core.c. ( Note that the dynamic none/voluntary mode isn't 100% identical, for example preempt-RCU is available in all cases, plus the preempt count is maintained in all models, which has runtime overhead even with the code patching. ) The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast majority of distributions, are supposed to be unaffected. - Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that was found via rcutorture triggering a hang. The bug is that rcu_idle_enter() may wake up a NOCB kthread, but this happens after the last generic need_resched() check. Some cpuidle drivers fix it by chance but many others don't. In true 2020 fashion the original bug fix has grown into a 5-patch scheduler/RCU fix series plus another 16 RCU patches to address the underlying issue of missed preemption events. These are the initial fixes that should fix current incarnations of the bug. - Clean up rbtree usage in the scheduler, by providing & using the following consistent set of rbtree APIs: partial-order; less() based: - rb_add(): add a new entry to the rbtree - rb_add_cached(): like rb_add(), but for a rb_root_cached total-order; cmp() based: - rb_find(): find an entry in an rbtree - rb_find_add(): find an entry, and add if not found - rb_find_first(): find the first (leftmost) matching entry - rb_next_match(): continue from rb_find_first() - rb_for_each(): iterate a sub-tree using the previous two - Improve the SMP/NUMA load-balancer: scan for an idle sibling in a single pass. This is a 4-commit series where each commit improves one aspect of the idle sibling scan logic. - Improve the cpufreq cooling driver by getting the effective CPU utilization metrics from the scheduler - Improve the fair scheduler's active load-balancing logic by reducing the number of active LB attempts & lengthen the load-balancing interval. This improves stress-ng mmapfork performance. - Fix CFS's estimated utilization (util_est) calculation bug that can result in too high utilization values - Misc updates & fixes: - Fix the HRTICK reprogramming & optimization feature - Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code - Reduce dl_add_task_root_domain() overhead - Fix uprobes refcount bug - Process pending softirqs in flush_smp_call_function_from_idle() - Clean up task priority related defines, remove *USER_*PRIO and USER_PRIO() - Simplify the sched_init_numa() deduplication sort - Documentation updates - Fix EAS bug in update_misfit_status(), which degraded the quality of energy-balancing - Smaller cleanups Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmAtHBsRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1itgg/+NGed12pgPjYBzesdou60Lvx7LZLGjfOt M1F1EnmQGn/hEH2fCY6ZoqIZQTVltm7GIcBNabzYTzlaHZsdtyuDUJBZyj19vTlk zekcj7WVt+qvfjChaNwEJhQ9nnOM/eohMgEOHMAAJd9zlnQvve7NOLQ56UDM+kn/ 9taFJ5ZPvb4avP6C5p3KivvKex6Bjof/Tl0m3utpNyPpI/qK3FyGxwdgCxU0yepT ABWQX5ZQCufFvo1bgnBPfqyzab4MqhoM3bNKBsLQfuAlssG1xRv4KQOev4dRwrt9 pXJikV5C9yez5d2lGe5p0ltH5IZS/l9x2yI/ZQj3OUDTFyV1ic6WfFAqJgDzVF8E i/vvA4NPQiI241Bkps+ErcCw4aVOgiY6TWli74cHjLUIX0+As6aHrFWXGSxUmiHB WR+B8KmdfzRTTlhOxMA+cvlpZcKCfxWkJJmXzr/lDZzIuKPqM3QCE2wD9sixkfVo JNICT0IvZghWOdbMEfZba8Psh/e2LVI9RzdpEiuYJz1ZrVlt1hO0M6jBxY0hMz9n k54z81xODw0a8P2FHMtpmB1vhAeqCmvwA6DO8z0Oxs0DFi+KM2bLf2efHsCKafI+ Bm5v9YFaOk/55R76hJVh+aYLlyFgFkKd+P/niJTPDnxOk3SqJuXvTrql1HeGHkNr kYgQa23dsZk= =pyaG -----END PGP SIGNATURE----- Merge tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: "Core scheduler updates: - Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the preempt=none/voluntary/full boot options (default: full), to allow distros to build a PREEMPT kernel but fall back to close to PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling behavior via a boot time selection. There's also the /debug/sched_debug switch to do this runtime. This feature is implemented via runtime patching (a new variant of static calls). The scope of the runtime patching can be best reviewed by looking at the sched_dynamic_update() function in kernel/sched/core.c. ( Note that the dynamic none/voluntary mode isn't 100% identical, for example preempt-RCU is available in all cases, plus the preempt count is maintained in all models, which has runtime overhead even with the code patching. ) The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast majority of distributions, are supposed to be unaffected. - Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that was found via rcutorture triggering a hang. The bug is that rcu_idle_enter() may wake up a NOCB kthread, but this happens after the last generic need_resched() check. Some cpuidle drivers fix it by chance but many others don't. In true 2020 fashion the original bug fix has grown into a 5-patch scheduler/RCU fix series plus another 16 RCU patches to address the underlying issue of missed preemption events. These are the initial fixes that should fix current incarnations of the bug. - Clean up rbtree usage in the scheduler, by providing & using the following consistent set of rbtree APIs: partial-order; less() based: - rb_add(): add a new entry to the rbtree - rb_add_cached(): like rb_add(), but for a rb_root_cached total-order; cmp() based: - rb_find(): find an entry in an rbtree - rb_find_add(): find an entry, and add if not found - rb_find_first(): find the first (leftmost) matching entry - rb_next_match(): continue from rb_find_first() - rb_for_each(): iterate a sub-tree using the previous two - Improve the SMP/NUMA load-balancer: scan for an idle sibling in a single pass. This is a 4-commit series where each commit improves one aspect of the idle sibling scan logic. - Improve the cpufreq cooling driver by getting the effective CPU utilization metrics from the scheduler - Improve the fair scheduler's active load-balancing logic by reducing the number of active LB attempts & lengthen the load-balancing interval. This improves stress-ng mmapfork performance. - Fix CFS's estimated utilization (util_est) calculation bug that can result in too high utilization values Misc updates & fixes: - Fix the HRTICK reprogramming & optimization feature - Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code - Reduce dl_add_task_root_domain() overhead - Fix uprobes refcount bug - Process pending softirqs in flush_smp_call_function_from_idle() - Clean up task priority related defines, remove *USER_*PRIO and USER_PRIO() - Simplify the sched_init_numa() deduplication sort - Documentation updates - Fix EAS bug in update_misfit_status(), which degraded the quality of energy-balancing - Smaller cleanups" * tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) sched,x86: Allow !PREEMPT_DYNAMIC entry/kvm: Explicitly flush pending rcuog wakeup before last rescheduling point entry: Explicitly flush pending rcuog wakeup before last rescheduling point rcu/nocb: Trigger self-IPI on late deferred wake up before user resume rcu/nocb: Perform deferred wake up before last idle's need_resched() check rcu: Pull deferred rcuog wake up to rcu_eqs_enter() callers sched/features: Distinguish between NORMAL and DEADLINE hrtick sched/features: Fix hrtick reprogramming sched/deadline: Reduce rq lock contention in dl_add_task_root_domain() uprobes: (Re)add missing get_uprobe() in __find_uprobe() smp: Process pending softirqs in flush_smp_call_function_from_idle() sched: Harden PREEMPT_DYNAMIC static_call: Allow module use without exposing static_call_key sched: Add /debug/sched_preempt preempt/dynamic: Support dynamic preempt with preempt= boot option preempt/dynamic: Provide irqentry_exit_cond_resched() static call preempt/dynamic: Provide preempt_schedule[_notrace]() static calls preempt/dynamic: Provide cond_resched() and might_resched() static calls preempt: Introduce CONFIG_PREEMPT_DYNAMIC static_call: Provide DEFINE_STATIC_CALL_RET0() ...	2021-02-21 12:35:04 -08:00
Linus Torvalds	24880bef41	Remove oprofile and dcookies support ... The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. The dcookies stuff is only used by the oprofile code. Now that oprofile's support is getting removed from the kernel, there is no need for dcookies as well. Remove kernel's old oprofile and dcookies support. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJgJMEVAAoJENK5HDyugRIcL8YP/jkmXH5CZT80ntcqrJGWKcG7 lWbach7uNeQteht7B1ZPKvojxizTkmfrN2sClX0B2hbGkc5TiWUQ2ZSnvnfWDZ8+ z2qQcEB11G/ReL2vvRk1fJlWdAOyUfrPee/44AkemnLRv+Niw/8PqnGd87yDQGsK qy5E1XXfbjUq6Y/uMiLOX3+21I6w6o2Q6I3NNXC93s0wS3awqnft8n0XBC7iAPBj eowRJxpdRU2Vcuj8UOzzOI7gQlwdjwYImyLPbRy/V8NawC8a+FHrPrf5/GCYlVzl 7TGFBsDQSmzvrBChUfoGz1Rq/VZ1a357p5rhRqemfUrdkjW+vyzelnD8I1W/hb2o SmBXoPoyl3+UkFHNyJI0mI7obaV+2PzyXMV0JIQUj+IiX/mfeFv0nF4XfZD2IkRt 6xhaYj775Zrx32iBdGZIvvLg5Gh9ZkZmR5vJ7Fi/EIZFe6Z+bZnPKUROnAgS/o0z +UkSygOhgo/1XbqrzZVk1iweWeu+EUMbY4YQv2qVnFhpvsq4ieThcUGQpWcxGjjH WP8O0n1yq1slsnpUtxhiTsm46ENajx9zZp6Iv6Ws+NM0RUqjND8BdF1co9WGD3LS cnZMFBs4Bg/V1HICL/D4s6L7t1ofrEXIgJH1y3iF0HeECq03mU4CgA/qly9Aebqg UxPF3oNlVOPlds9FzsU2 =I2Ac -----END PGP SIGNATURE----- Merge tag 'oprofile-removal-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux Pull oprofile and dcookies removal from Viresh Kumar: "Remove oprofile and dcookies support The 'oprofile' user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. The dcookies stuff is only used by the oprofile code. Now that oprofile's support is getting removed from the kernel, there is no need for dcookies as well. Remove kernel's old oprofile and dcookies support" * tag 'oprofile-removal-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux: fs: Remove dcookies support drivers: Remove CONFIG_OPROFILE support arch: xtensa: Remove CONFIG_OPROFILE support arch: x86: Remove CONFIG_OPROFILE support arch: sparc: Remove CONFIG_OPROFILE support arch: sh: Remove CONFIG_OPROFILE support arch: s390: Remove CONFIG_OPROFILE support arch: powerpc: Remove oprofile arch: powerpc: Stop building and using oprofile arch: parisc: Remove CONFIG_OPROFILE support arch: mips: Remove CONFIG_OPROFILE support arch: microblaze: Remove CONFIG_OPROFILE support arch: ia64: Remove rest of perfmon support arch: ia64: Remove CONFIG_OPROFILE support arch: hexagon: Don't select HAVE_OPROFILE arch: arc: Remove CONFIG_OPROFILE support arch: arm: Remove CONFIG_OPROFILE support arch: alpha: Remove CONFIG_OPROFILE support	2021-02-21 10:40:34 -08:00
Linus Torvalds	591fd30eee	Merge branch 'work.elf-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Pull ELF compat updates from Al Viro: "Sanitizing ELF compat support, especially for triarch architectures: - X32 handling cleaned up - MIPS64 uses compat_binfmt_elf.c both for O32 and N32 now - Kconfig side of things regularized Eventually I hope to have compat_binfmt_elf.c killed, with both native and compat built from fs/binfmt_elf.c, with -DELF_BITS={64,32} passed by kbuild, but that's a separate story - not included here" * 'work.elf-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: get rid of COMPAT_ELF_EXEC_PAGESIZE compat_binfmt_elf: don't bother with undef of ELF_ARCH Kconfig: regularize selection of CONFIG_BINFMT_ELF mips compat: switch to compat_binfmt_elf.c mips: don't bother with ELF_CORE_EFLAGS mips compat: don't bother with ELF_ET_DYN_BASE mips: KVM_GUEST makes no sense for 64bit builds... mips: kill unused definitions in binfmt_elf[on]32.c mips binfmt_elf*32.c: use elfcore-compat.h x32: make X32, !IA32_EMULATION setups able to execute x32 binaries [amd64] clean PRSTATUS_SIZE/SET_PR_FPVALID up properly elf_prstatus: collect the common part (everything before pr_reg) into a struct binfmt_elf: partially sanitize PRSTATUS_SIZE and SET_PR_FPVALID	2021-02-21 09:29:23 -08:00
Linus Torvalds	51e6d17809	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next ... Pull networking updates from David Miller: "Here is what we have this merge window: 1) Support SW steering for mlx5 Connect-X6Dx, from Yevgeny Kliteynik. 2) Add RSS multi group support to octeontx2-pf driver, from Geetha Sowjanya. 3) Add support for KS8851 PHY. From Marek Vasut. 4) Add support for GarfieldPeak bluetooth controller from Kiran K. 5) Add support for half-duplex tcan4x5x can controllers. 6) Add batch skb rx processing to bcrm63xx_enet, from Sieng Piaw Liew. 7) Rework RX port offload infrastructure, particularly wrt, UDP tunneling, from Jakub Kicinski. 8) Add BCM72116 PHY support, from Florian Fainelli. 9) Remove Dsa specific notifiers, they are unnecessary. From Vladimir Oltean. 10) Add support for picosecond rx delay in dwmac-meson8b chips. From Martin Blumenstingl. 11) Support TSO on xfrm interfaces from Eyal Birger. 12) Add support for MP_PRIO to mptcp stack, from Geliang Tang. 13) Support BCM4908 integrated switch, from Rafał Miłecki. 14) Support for directly accessing kernel module variables via module BTF info, from Andrii Naryiko. 15) Add DASH (esktop and mobile Architecture for System Hardware) support to r8169 driver, from Heiner Kallweit. 16) Add rx vlan filtering to dpaa2-eth, from Ionut-robert Aron. 17) Add support for 100 base0x SFP devices, from Bjarni Jonasson. 18) Support link aggregation in DSA, from Tobias Waldekranz. 19) Support for bitwidse atomics in bpf, from Brendan Jackman. 20) SmartEEE support in at803x driver, from Russell King. 21) Add support for flow based tunneling to GTP, from Pravin B Shelar. 22) Allow arbitrary number of interconnrcts in ipa, from Alex Elder. 23) TLS RX offload for bonding, from Tariq Toukan. 24) RX decap offklload support in mac80211, from Felix Fietkou. 25) devlink health saupport in octeontx2-af, from George Cherian. 26) Add TTL attr to SCM_TIMESTAMP_OPT_STATS, from Yousuk Seung 27) Delegated actionss support in mptcp, from Paolo Abeni. 28) Support receive timestamping when doin zerocopy tcp receive. From Arjun Ray. 29) HTB offload support for mlx5, from Maxim Mikityanskiy. 30) UDP GRO forwarding, from Maxim Mikityanskiy. 31) TAPRIO offloading in dsa hellcreek driver, from Kurt Kanzenbach. 32) Weighted random twos choice algorithm for ipvs, from Darby Payne. 33) Fix netdev registration deadlock, from Johannes Berg. 34) Various conversions to new tasklet api, from EmilRenner Berthing. 35) Bulk skb allocations in veth, from Lorenzo Bianconi. 36) New ethtool interface for lane setting, from Danielle Ratson. 37) Offload failiure notifications for routes, from Amit Cohen. 38) BCM4908 support, from Rafał Miłecki. 39) Support several new iwlwifi chips, from Ihab Zhaika. 40) Flow drector support for ipv6 in i40e, from Przemyslaw Patynowski. 41) Support for mhi prrotocols, from Loic Poulain. 42) Optimize bpf program stats. 43) Implement RFC6056, for better port randomization, from Eric Dumazet. 44) hsr tag offloading support from George McCollister. 45) Netpoll support in qede, from Bhaskar Upadhaya. 46) 2005/400g speed support in bonding 3ad mode, from Nikolay Aleksandrov. 47) Netlink event support in mptcp, from Florian Westphal. 48) Better skbuff caching, from Alexander Lobakin. 49) MRP (Media Redundancy Protocol) offloading in DSA and a few drivers, from Horatiu Vultur. 50) mqprio saupport in mvneta, from Maxime Chevallier. 51) Remove of_phy_attach, no longer needed, from Florian Fainelli" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1766 commits) octeontx2-pf: Fix otx2_get_fecparam() cteontx2-pf: cn10k: Prevent harmless double shift bugs net: stmmac: Add PCI bus info to ethtool driver query output ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary ptp: ptp_clockmatrix: Simplify code - remove unnecessary `err` variable. ptp: ptp_clockmatrix: Coding style - tighten vertical spacing. ptp: ptp_clockmatrix: Clean-up dev_*() messages. ptp: ptp_clockmatrix: Remove unused header declarations. ptp: ptp_clockmatrix: Add alignment of 1 PPS to idtcm_perout_enable. ptp: ptp_clockmatrix: Add wait_for_sys_apll_dpll_lock. net: stmmac: dwmac-sun8i: Add a shutdown callback net: stmmac: dwmac-sun8i: Minor probe function cleanup net: stmmac: dwmac-sun8i: Use reset_control_reset net: stmmac: dwmac-sun8i: Remove unnecessary PHY power check net: stmmac: dwmac-sun8i: Return void from PHY unpower r8169: use macro pm_ptr net: mdio: Remove of_phy_attach() net: mscc: ocelot: select PACKING in the Kconfig net: re-solve some conflicts after net -> net-next merge net: dsa: tag_rtl4_a: Support also egress tags ...	2021-02-20 17:45:32 -08:00
Dietmar Eggemann	9d061ba6bc	sched: Remove USER_PRIO, TASK_USER_PRIO and MAX_USER_PRIO ... The only remaining use of MAX_USER_PRIO (and USER_PRIO) is the SCALE_PRIO() definition in the PowerPC Cell architecture's Synergistic Processor Unit (SPU) scheduler. TASK_USER_PRIO isn't used anymore. Commit fe443ef2ac ("[POWERPC] spusched: Dynamic timeslicing for SCHED_OTHER") copied SCALE_PRIO() from the task scheduler in v2.6.23. Commit a4ec24b48d ("sched: tidy up SCHED_RR") removed it from the task scheduler in v2.6.24. Commit 3ee237dddc ("sched/prio: Add 3 macros of MAX_NICE, MIN_NICE and NICE_WIDTH in prio.h") introduced NICE_WIDTH much later. With: MAX_USER_PRIO = USER_PRIO(MAX_PRIO) = MAX_PRIO - MAX_RT_PRIO MAX_PRIO = MAX_RT_PRIO + NICE_WIDTH MAX_USER_PRIO = MAX_RT_PRIO + NICE_WIDTH - MAX_RT_PRIO MAX_USER_PRIO = NICE_WIDTH MAX_USER_PRIO can be replaced by NICE_WIDTH to be able to remove all the {*_}USER_PRIO defines. Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20210128131040.296856-3-dietmar.eggemann@arm.com	2021-02-17 14:08:17 +01:00
Rob Herring	83c4a4eec0	of: Remove of_dev_{get,put}() ... of_dev_get() and of_dev_put are just wrappers for get_device()/put_device() on a platform_device. There's also already platform_device_{get,put}() wrappers for this purpose. Let's update the few users and remove of_dev_{get,put}(). Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Julia Lawall <Julia.Lawall@inria.fr> Cc: Gilles Muller <Gilles.Muller@inria.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Michal Marek <michal.lkml@markovi.net> Cc: linuxppc-dev@lists.ozlabs.org Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-usb@vger.kernel.org Cc: cocci@systeme.lip6.fr Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210211232745.1498137-2-robh@kernel.org	2021-02-12 19:23:39 -06:00
Paolo Bonzini	8c6e67bec3	KVM/arm64 updates for Linux 5.12 ... - Make the nVHE EL2 object relocatable, resulting in much more maintainable code - Handle concurrent translation faults hitting the same page in a more elegant way - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Allow the disabling of symbol export from assembly code - Simplification of the early init hypercall handling -----BEGIN PGP SIGNATURE----- iQJDBAABCgAtFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmAmjqEPHG1hekBrZXJu ZWwub3JnAAoJECPQ0LrRPXpDoUEQAIrJ7YF4v4gz06a0HG9+b6fbmykHyxlG7jfm trvctfaiKzOybKoY5odPpNFzhbYOOdXXqYipyTHGwBYtGSy9G/9SjMKSUrfln2Ni lr1wBqapr9TE+SVKoR8pWWuZxGGbHVa7brNuMbMsMi1wwAsM2/n70H9PXrdq3QiK Ge1DWLso2oEfhtTwqNKa4dwB2MHjBhBFhhq+Nq5pslm6mmxJaYqz7pyBmw/C+2cc oU/6kpAa1yPAauptWXtYXJYOMHihxgEa1IdK3Gl0hUyFyu96xVkwH/KFsj+bRs23 QGGCSdy4313hzaoGaSOTK22R98Aeg0wI9a6tcCBvVVjTAztnlu1FPtUZr8e/F7uc +r8xVJUJFiywt3Zktf/D7YDK9LuMMqFnj0BkI4U9nIBY59XZRNhENsBCmjru5lnL iXa5cuta03H4emfssIChLpgn0XHFas6t5dFXBPGbXyw0qsQchTw98iQX9LVxefUK rOUGPIN4nE9ESRIZe0SPlAVeCtNP8cLH7+0YG9MJ1QeDVYaUsnvy9Ln/ox+514mR 5y2KJ6y7xnLB136SKCzPDDloYtz7BDiJq6a/RPiXKGheKoxy+N+BSe58yWCqFZYE Fx/cGUr7oSg39U7gCboog6BDp5e2CXBfbRllg6P47bZFfdPNwzNEzHvk49VltMxx Rl2W05bk =6EwV -----END PGP SIGNATURE----- Merge tag 'kvmarm-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for Linux 5.12 - Make the nVHE EL2 object relocatable, resulting in much more maintainable code - Handle concurrent translation faults hitting the same page in a more elegant way - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Allow the disabling of symbol export from assembly code - Simplification of the early init hypercall handling	2021-02-12 11:23:44 -05:00
Ingo Molnar	a3251c1a36	Merge branch 'x86/paravirt' into x86/entry ... Merge in the recent paravirt changes to resolve conflicts caused by objtool annotations. Conflicts: arch/x86/xen/xen-asm.S Signed-off-by: Ingo Molnar <mingo@kernel.org>	2021-02-12 13:36:43 +01:00
Linus Torvalds	dcc0b49040	powerpc fixes for 5.11 #8 ... One fix for a regression seen in io_uring, introduced by our support for KUAP (Kernel User Access Prevention) with the Hash MMU. Thanks to: Aneesh Kumar K.V, Zorro Lang. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmAlIXsTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgBemD/4pl6wsnmPnoxAKSL1jeJ6XXDOeBRJF gCk6/NgnH7YUOrQcHhme6Rbs9CMaitidw8tqRwexyjs2AmcAF8lelqsRJHcFPgWt AYGR0sb00ThI5iMo4heZKMQ/swmHikhZRnH+bx9+fHFgIVoLLCU9bsATSzAM3RXM +s+bVn8S4dYFx8imC4tYmki2FpZAUzcWhEMP6gTfHoUeP7+GIybDcERBbVoQfBGj Gqq0nnJxjgXCs9yY/11QevQhqqbeKIyXLvRqm09wGWQacJGti2dd2X5hBWGUeNa1 SMx7ZpnfpGqLudyJBA6XUUBtfbuLZANTJe7CAtYtaYZJ3u75Wd+I5UaHypI+LibC WvaUC89C/y9DDlhyZqntqiiaYPxvNQxauhbjX4MBJdCXaAZB3GpzqaDCkXB3WUSN yXlx9hJpFmmumWelWqiuLTdtfMuehj9okLvQ7OSBI5ueQdoxrYw2jeGJPsj3+Zrq okeMgrDpx3yq4AmcLkTppcYkqT9OJ59A52vk1rCMev0kz44o0sjF0ebiHNpoXZe+ mVRF9RbxYYYCd2YojOqpLm3nQmx0TbB2DSSmE+tkzMS7BZ/ERBtvqzJ0EGmc6af/ zc+K1JoWAMLrAqYX5BgKptVRh9NPcEL08cS6ZrLLXZDYkpcUQAeiVN5aIvc8wamH iCwIf5hSyKeQ9g== =iXnC -----END PGP SIGNATURE----- Merge tag 'powerpc-5.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fix from Michael Ellerman: "One fix for a regression seen in io_uring, introduced by our support for KUAP (Kernel User Access Prevention) with the Hash MMU. Thanks to Aneesh Kumar K.V, and Zorro Lang" * tag 'powerpc-5.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/kuap: Allow kernel thread to access userspace after kthread_use_mm	2021-02-11 15:41:07 -08:00
Masahiro Yamada	052c805a18	kbuild: LD_VERSION redenomination ... Commit ccbef1674a ("Kbuild, lto: add ld-version and ld-ifversion macros") introduced scripts/ld-version.sh for GCC LTO. At that time, this script handled 5 version fields because GCC LTO needed the downstream binutils. (https://lkml.org/lkml/2014/4/8/272) The code snippet from the submitted patch was as follows: # We need HJ Lu's Linux binutils because mainline binutils does not # support mixing assembler and LTO code in the same ld -r object. # XXX check if the gcc plugin ld is the expected one too # XXX some Fedora binutils should also support it. How to check for that? ifeq ($(call ld-ifversion,-ge,22710001,y),y) ... However, GCC LTO was not merged into the mainline after all. (https://lkml.org/lkml/2014/4/8/272) So, the 4th and 5th fields were never used, and finally removed by commit 0d61ed17dd ("ld-version: Drop the 4th and 5th version components"). Since then, the last 4-digits returned by this script is always zeros. Remove the meaningless last 4-digits. This makes the version format consistent with GCC_VERSION, CLANG_VERSION, LLD_VERSION. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>	2021-02-12 05:12:31 +09:00
Kajol Jain	82d2c16b35	powerpc/perf: Adds support for programming of Thresholding in P10 ... Thresholding, a performance monitoring unit feature, can be used to identify marked instructions which take more than expected cycles between start event and end event. Threshold compare (thresh_cmp) bits are programmed in MMCRA register. In Power9, thresh_cmp bits were part of the event code. But in case of P10, thresh_cmp are not part of event code due to inclusion of MMCR3 bits. Patch here adds an option to use attr.config1 variable to be used to pass thresh_cmp value to be programmed in MMCRA register. A new ppmu flag called PPMU_HAS_ATTR_CONFIG1 has been added and this flag is used to notify the use of attr.config1 variable. Patch has extended the parameter list of 'compute_mmcr', to include power_pmu's 'flags' element and parameter list of get_constraint to include attr.config1 value. It also extend parameter list of power_check_constraints inorder to pass perf_event list. As stated by commit ef0e3b650f ("powerpc/perf: Fix Threshold Event Counter Multiplier width for P10"), constraint bits for thresh_cmp is also needed to be increased to 11 bits, which is handled as part of this patch. We added bit number 53 as part of constraint bits of thresh_cmp for power10 to make it an 11 bit field. Updated layout for p10: /* * Layout of constraint bits: * * 60 56 52 48 44 40 36 32 * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | * [ fab_match ] [ thresh_cmp ] [ thresh_ctl ] [ ] * | | * [ thresh_cmp bits for p10] thresh_sel -* * * 28 24 20 16 12 8 4 0 * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | * [ ] | [ ] | [ sample ] [ ] [6] [5] [4] [3] [2] [1] * | | | | | * BHRB IFM -* | | |*radix_scope | Count of events for each PMC. * EBB -* | | p1, p2, p3, p4, p5, p6. * L1 I/D qualifier -* | * nc - number of counters -* * * The PMC fields P1..P6, and NC, are adder fields. As we accumulate constraints * we want the low bit of each field to be added to any existing value. * * Everything else is a value field. */ Result: command#: cat /sys/devices/cpu/format/thresh_cmp config1:0-17 ex. usage: command#: perf record -I --weight -d -e cpu/event=0x67340101EC,thresh_cmp=500/ ./ebizzy -S 2 -t 1 -s 4096 1826636 records/s real 2.00 s user 2.00 s sys 0.00 s [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.038 MB perf.data (61 samples) ] Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210209095234.837356-1-kjain@linux.ibm.com	2021-02-11 23:35:36 +11:00
Oliver O'Halloran	b3abe590c8	powerpc/pci: Remove unimplemented prototypes ... The corresponding definitions were deleted in commit 3d5134ee83 ("[POWERPC] Rewrite IO allocation & mapping on powerpc64") which was merged a mere 13 years ago. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200902035138.1762531-1-oohall@gmail.com	2021-02-11 23:35:36 +11:00
Christophe Leroy	052f9d206f	powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user() ... Since commit 17bc43367f ("powerpc/uaccess: Implement unsafe_copy_to_user() as a simple loop"), raw_copy_to_user_allowed() is only used by raw_copy_to_user(). Merge raw_copy_to_user_allowed() into raw_copy_to_user(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/3ae114740317187e12edbd5ffa9157cb8c396dea.1612879284.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:35 +11:00
Christophe Leroy	95d019e0f9	powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size() ... __put_user_size_allowed() is only called from __put_user_size() now. Merge them together. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b3baeaec1ee2fbdc653bb6fb27b0be5b846163ef.1612879284.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:35 +11:00
Christophe Leroy	6b385d1d7c	powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user() ... Copied from commit 4b842e4e25 ("x86: get rid of small constant size cases in raw_copy_{to,from}_user()") Very few call sites where that would be triggered remain, and none of those is anywhere near hot enough to bother. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/99d4ccb58a20d8408d0e19874393655ad5b40822.1612879284.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:35 +11:00
Michael Ellerman	e3de1e291f	powerpc/64: Fix stack trace not displaying final frame ... In commit bf13718bc5 ("powerpc: show registers when unwinding interrupt frames") we changed our stack dumping logic to show the full registers whenever we find an interrupt frame on the stack. However we didn't notice that on 64-bit this doesn't show the final frame, ie. the interrupt that brought us in from userspace, whereas on 32-bit it does. That is due to confusion about the size of that last frame. The code in show_stack() calls validate_sp(), passing it STACK_INT_FRAME_SIZE to check the sp is at least that far below the top of the stack. However on 64-bit that size is too large for the final frame, because it includes the red zone, but we don't allocate a red zone for the first frame. So add a new define that encodes the correct size for 32-bit and 64-bit, and use it in show_stack(). This results in the full trace being shown on 64-bit, eg: sysrq: Trigger a crash Kernel panic - not syncing: sysrq triggered crash CPU: 0 PID: 83 Comm: sh Not tainted 5.11.0-rc2-gcc-8.2.0-00188-g571abcb96b10-dirty #649 Call Trace: [c00000000a1c3ac0] [c000000000897b70] dump_stack+0xc4/0x114 (unreliable) [c00000000a1c3b00] [c00000000014334c] panic+0x178/0x41c [c00000000a1c3ba0] [c00000000094e600] sysrq_handle_crash+0x40/0x50 [c00000000a1c3c00] [c00000000094ef98] __handle_sysrq+0xd8/0x210 [c00000000a1c3ca0] [c00000000094f820] write_sysrq_trigger+0x100/0x188 [c00000000a1c3ce0] [c0000000005559dc] proc_reg_write+0x10c/0x1b0 [c00000000a1c3d10] [c000000000479950] vfs_write+0xf0/0x360 [c00000000a1c3d60] [c000000000479d9c] ksys_write+0x7c/0x140 [c00000000a1c3db0] [c00000000002bf5c] system_call_exception+0x19c/0x2c0 [c00000000a1c3e10] [c00000000000d35c] system_call_common+0xec/0x278 --- interrupt: c00 at 0x7fff9fbab428 NIP: 00007fff9fbab428 LR: 000000001000b724 CTR: 0000000000000000 REGS: c00000000a1c3e80 TRAP: 0c00 Not tainted (5.11.0-rc2-gcc-8.2.0-00188-g571abcb96b10-dirty) MSR: 900000000280f033 <SF,HV,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 22002884 XER: 00000000 IRQMASK: 0 GPR00: 0000000000000004 00007fffc3cb8960 00007fff9fc59900 0000000000000001 GPR04: 000000002a4b32d0 0000000000000002 0000000000000063 0000000000000063 GPR08: 000000002a4b32d0 0000000000000000 0000000000000000 0000000000000000 GPR12: 0000000000000000 00007fff9fcca9a0 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 00000000100b8fd0 GPR20: 000000002a4b3485 00000000100b8f90 0000000000000000 0000000000000000 GPR24: 000000002a4b0440 00000000100e77b8 0000000000000020 000000002a4b32d0 GPR28: 0000000000000001 0000000000000002 000000002a4b32d0 0000000000000001 NIP [00007fff9fbab428] 0x7fff9fbab428 LR [000000001000b724] 0x1000b724 --- interrupt: c00 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210209141627.2898485-1-mpe@ellerman.id.au	2021-02-11 23:35:14 +11:00
Christophe Leroy	132f94f133	powerpc/time: Remove get_tbl() ... There are no more users of get_tbl(). Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/dd0368bfd497ffe06b31ee1b5f2ebf7760e30900.1612866360.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:13 +11:00
Christophe Leroy	55d68df623	powerpc/time: Avoid using get_tbl() ... get_tbl() is confusing as it returns the content TBL register on PPC32 but the concatenation of TBL and TBU on PPC64. Use mftb() instead. This will allow the removal of get_tbl() in a following patch. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/decefb47c8a2070bf55d20b096b813908c7b3110.1612866360.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:13 +11:00
Christophe Leroy	5b90b9661a	powerpc/syscall: Avoid storing 'current' in another pointer ... By saving the pointer pointing to thread_info.flags, gcc copies r2 in a non-volatile register. We know 'current' doesn't change, so avoid that intermediaite pointer. Reduces null_syscall benchmark by 2 cycles (322 => 320 cycles) On PPC64, gcc seems to know that 'current' is not changing, and it keeps it in a non volatile register to avoid multiple read of 'current' in paca. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ad0363ff0ff8c125f40e1cdc589a85bbd7e31693.1612946484.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:13 +11:00
Christophe Leroy	d524dda719	powerpc/32: Handle bookE debugging in C in syscall entry/exit ... The handling of SPRN_DBCR0 and other registers can easily be done in C instead of ASM. For that, create booke_load_dbcr0() and booke_restore_dbcr0(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1a7515f9258b27a9177de88491a8bb79b255ceb7.1612898425.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:12 +11:00
Christophe Leroy	b966f22790	powerpc/syscall: Do not check unsupported scv vector on PPC32 ... Only book3s/64 has scv. No need to check the 0x7ff0 trap on 32 or 64e. For that, add a helper trap_is_unsupported_scv() similar to trap_is_scv(). And ignore the scv parameter in syscall_exit_prepare (Save 14 cycles 346 => 332 cycles) Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/fb87b205ae8eb8c623f33bb316801acf95a831e6.1612898425.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:12 +11:00
Christophe Leroy	eb595eca74	powerpc/32: Remove the counter in global_dbcr0 ... global_dbcr0 has two parts, 4 bytes to save/restore the value of SPRN_DBCR0, and 4 bytes that are incremented/decremented everytime something is saving/loading the above value. This counter is only incremented/decremented, its value is never used and never read. Remove the counter and devide the size of global_dbcr0 by 2. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7e381dc58b3f583556cfab37ba5d813bfd5cce1e.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:12 +11:00
Christophe Leroy	4d67facbcb	powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry ... system_call_exception() checks MSR_PR and BUGs if a syscall is issued from kernel mode. No need to handle it anymore from the ASM entry code. null_syscall reduction 2 cycles (348 => 346 cycles) Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1eddb42cb12092b1e3d72608d182c365db3da41d.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:11 +11:00
Christophe Leroy	6f76a01173	powerpc/syscall: implement system call entry/exit logic in C for PPC32 ... That's port of PPC64 syscall entry/exit logic in C to PPC32. Performancewise on 8xx: Before : 304 cycles on null_syscall After : 348 cycles on null_syscall Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a93b08e1275e9d1f0b1c39043d1b827586b2b401.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:11 +11:00
Christophe Leroy	fbcee2ebe8	powerpc/32: Always save non volatile GPRs at syscall entry ... In preparation for porting syscall entry/exit to C, inconditionally save non volatile general purpose registers. Commit 965dd3ad30 ("powerpc/64/syscall: Remove non-volatile GPR save optimisation") provides detailed explanation. This increases the number of cycles by 24 cycles on 8xx with null_syscall benchmark (280 => 304 cycles) Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/21c08162b83655195fe9ead78ff2cfd28508d023.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:11 +11:00
Christophe Leroy	c01b916658	powerpc/syscall: Change condition to check MSR_RI ... In system_call_exception(), MSR_RI also needs to be checked on 8xx. Only booke and 40x doesn't have MSR_RI. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/67820fada8dd6a8fe9d7b666f175d4cc9d8de87e.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:11 +11:00
Christophe Leroy	8875f47b76	powerpc/syscall: Save r3 in regs->orig_r3 ... Save r3 in regs->orig_r3 in system_call_exception() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/9a90805ab6b9101b46daf56470f457a57acd86fc.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:10 +11:00
Christophe Leroy	72b7a9e56b	powerpc/syscall: Use is_compat_task() ... Instead of hard comparing task flags with _TIF_32BIT, use is_compat_task(). The advantage is that it returns 0 on PPC32 allthough _TIF_32BIT is always set. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/c8094662199337a7200fea9f6e1d1f8b1b6d5f69.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:10 +11:00
Christophe Leroy	344bb20b15	powerpc/syscall: Make interrupt.c buildable on PPC32 ... To allow building interrupt.c on PPC32, ifdef out specific PPC64 code or use helpers which are available on both PP32 and PPC64 Modify Makefile to always build interrupt.o Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ba073ad67bd971a88ce331b65d6655523b54c794.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:10 +11:00
Christophe Leroy	ab1a517d55	powerpc/syscall: Rename syscall_64.c into interrupt.c ... syscall_64.c will be reused almost as is for PPC32. As this file also contains functions to handle other types of interrupts rename it interrupt.c Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cddc2deaa8f049d3ec419738e69804934919b935.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:10 +11:00
Christophe Leroy	6650c4782d	powerpc/irq: Add stub irq_soft_mask_return() for PPC32 ... To allow building syscall_64.c smoothly on PPC32, add stub version of irq_soft_mask_return(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/9b9f62c5e2e63cc121fd749a923aaaee92ee0da4.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:09 +11:00
Christophe Leroy	08353779f2	powerpc/irq: Rework helpers that manipulate MSR[EE/RI] ... In preparation of porting PPC32 to C syscall entry/exit, rewrite the following helpers as static inline functions and add support for PPC32 in them: __hard_irq_enable() __hard_irq_disable() __hard_EE_RI_disable() __hard_RI_enable() Then use them in PPC32 version of arch_local_irq_disable() and arch_local_irq_enable() to avoid code duplication. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/0e290372a0e7dc2ae657b4a01aec85f8de7fdf77.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:09 +11:00
Christophe Leroy	fb5608fd11	powerpc/irq: Add helper to set regs->softe ... regs->softe doesn't exist on PPC32. Add irq_soft_mask_regs_set_state() helper to set regs->softe. This helper will void on PPC32. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/5f37d1177a751fdbca79df461d283850ca3a34a2.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:09 +11:00
Christophe Leroy	2c59e51048	powerpc/32: Reorder instructions to avoid using CTR in syscall entry ... Now that we are using rfi instead of mtmsr to reactivate MMU, it is possible to reorder instructions and avoid the need to use CTR for stashing SRR0. null_syscall on 8xx is reduced by 3 cycles (283 => 280 cycles). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8fa13a59f73647e058c95fc7e1c7a98f316bd20a.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:08 +11:00
Christophe Leroy	76249ddc27	powerpc/32: On syscall entry, enable instruction translation at the same time as data ... On 40x and 8xx, kernel text is pinned. On book3s/32, kernel text is mapped by BATs. Enable instruction translation at the same time as data translation, it makes things simpler. MSR_RI can also be set at the same time because srr0/srr1 are already saved and r1 is set properly. On booke, translation is always on, so at the end all PPC32 have translation on early. This reduces null_syscall benchmark by 13 cycles on 8xx (296 ==> 283 cycles). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/3fe8891c814103a3549efc1d4e7ffc828bba5993.1612796617.git.christophe.leroy@csgroup.eu	2021-02-11 23:35:08 +11:00