forked from Minki/linux
8b5656bc4e
- Make the prctl() for enabling dynamic XSTATE components correct so it
adds the newly requested feature to the permission bitmap instead of
overwriting it. Add a selftest which validates that.
- Unroll string MMIO for encrypted SEV guests as the hypervisor cannot
emulate it.
- Handle supervisor states correctly in the FPU/XSTATE code so it takes
the feature set of the fpstate buffer into account. The feature sets
can differ between host and guest buffers. Guest buffers do not contain
supervisor states. So far this was not an issue, but with enabling
PASID it needs to be handled in the buffer offset calculation and in
the permission bitmaps.
- Avoid a gazillion of repeated CPUID invocations in by caching the values
early in the FPU/XSTATE code.
- Enable CONFIG_WERROR for X86.
- Make the X86 defconfigs more useful by adapting them to Y2022 reality.
-----BEGIN PGP SIGNATURE-----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=GK27
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of x86 fixes and updates:
- Make the prctl() for enabling dynamic XSTATE components correct so
it adds the newly requested feature to the permission bitmap
instead of overwriting it. Add a selftest which validates that.
- Unroll string MMIO for encrypted SEV guests as the hypervisor
cannot emulate it.
- Handle supervisor states correctly in the FPU/XSTATE code so it
takes the feature set of the fpstate buffer into account. The
feature sets can differ between host and guest buffers. Guest
buffers do not contain supervisor states. So far this was not an
issue, but with enabling PASID it needs to be handled in the buffer
offset calculation and in the permission bitmaps.
- Avoid a gazillion of repeated CPUID invocations in by caching the
values early in the FPU/XSTATE code.
- Enable CONFIG_WERROR in x86 defconfig.
- Make the X86 defconfigs more useful by adapting them to Y2022
reality"
* tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu/xstate: Consolidate size calculations
x86/fpu/xstate: Handle supervisor states in XSTATE permissions
x86/fpu/xsave: Handle compacted offsets correctly with supervisor states
x86/fpu: Cache xfeature flags from CPUID
x86/fpu/xsave: Initialize offset/size cache early
x86/fpu: Remove unused supervisor only offsets
x86/fpu: Remove redundant XCOMP_BV initialization
x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IO
x86/config: Make the x86 defconfigs a bit more usable
x86/defconfig: Enable WERROR
selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test
x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementation
|
||
|---|---|---|
| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| cgroup | ||
| counter | ||
| debugging | ||
| edid | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| io_uring | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| objtool | ||
| pci | ||
| pcmcia | ||
| perf | ||
| power | ||
| rcu | ||
| scripts | ||
| spi | ||
| testing | ||
| thermal/tmon | ||
| time | ||
| tracing | ||
| usb | ||
| virtio | ||
| vm | ||
| wmi | ||
| Makefile | ||