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s390 updates for 4.20-rc2

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- A fix for the pgtable_bytes misaccounting on s390. The patch changes
    common code part in regard to page table folding and adds extra
    checks to mm_[inc|dec]_nr_[pmds|puds].
 
  - Add FORCE for all build targets using if_changed
 
  - Use non-loadable phdr for the .vmlinux.info section to avoid
    a segment overlap that confuses kexec
 
  - Cleanup the attribute definition for the diagnostic sampling
 
  - Increase stack size for CONFIG_KASAN=y builds
 
  - Export __node_distance to fix a build error
 
  - Correct return code of a PMU event init function
 
  - An update for the default configs
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Merge tag 's390-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky:

 - A fix for the pgtable_bytes misaccounting on s390. The patch changes
   common code part in regard to page table folding and adds extra
   checks to mm_[inc|dec]_nr_[pmds|puds].

 - Add FORCE for all build targets using if_changed

 - Use non-loadable phdr for the .vmlinux.info section to avoid a
   segment overlap that confuses kexec

 - Cleanup the attribute definition for the diagnostic sampling

 - Increase stack size for CONFIG_KASAN=y builds

 - Export __node_distance to fix a build error

 - Correct return code of a PMU event init function

 - An update for the default configs

* tag 's390-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/perf: Change CPUM_CF return code in event init function
  s390: update defconfigs
  s390/mm: Fix ERROR: "__node_distance" undefined!
  s390/kasan: increase instrumented stack size to 64k
  s390/cpum_sf: Rework attribute definition for diagnostic sampling
  s390/mm: fix mis-accounting of pgtable_bytes
  mm: add mm_pxd_folded checks to pgtable_bytes accounting functions
  mm: introduce mm_[p4d|pud|pmd]_folded
  mm: make the __PAGETABLE_PxD_FOLDED defines non-empty
  s390: avoid vmlinux segments overlap
  s390/vdso: add missing FORCE to build targets
  s390/decompressor: add missing FORCE to build targets
This commit is contained in:
Linus Torvalds 2018-11-09 06:30:44 -06:00
commit 3541833fd1
31 changed files with 175 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/include/asm/pgtable-2level.h
View File

@ -10,7 +10,7 @@
#ifndef _ASM_PGTABLE_2LEVEL_H
#define _ASM_PGTABLE_2LEVEL_H
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
/*
* Hardware-wise, we have a two level page table structure, where the first

4
arch/m68k/include/asm/pgtable_mm.h
View File

@ -55,12 +55,12 @@
*/
#ifdef CONFIG_SUN3
#define PTRS_PER_PTE 16
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
#define PTRS_PER_PMD 1
#define PTRS_PER_PGD 2048
#elif defined(CONFIG_COLDFIRE)
#define PTRS_PER_PTE 512
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
#define PTRS_PER_PMD 1
#define PTRS_PER_PGD 1024
#else

2
arch/microblaze/include/asm/pgtable.h
View File

@ -63,7 +63,7 @@ extern int mem_init_done;
#include <asm-generic/4level-fixup.h>
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
#ifdef __KERNEL__
#ifndef __ASSEMBLY__

2
arch/nds32/include/asm/pgtable.h
View File

@ -4,7 +4,7 @@
#ifndef _ASMNDS32_PGTABLE_H
#define _ASMNDS32_PGTABLE_H
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
#include <asm-generic/4level-fixup.h>
#include <asm-generic/sizes.h>

2
arch/parisc/include/asm/pgtable.h
View File

@ -111,7 +111,7 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
#if CONFIG_PGTABLE_LEVELS == 3
#define BITS_PER_PMD (PAGE_SHIFT + PMD_ORDER - BITS_PER_PMD_ENTRY)
#else
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
#define BITS_PER_PMD 0
#endif
#define PTRS_PER_PMD (1UL << BITS_PER_PMD)

2
arch/s390/Makefile
View File

@ -27,7 +27,7 @@ KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-option,-ffreestanding)
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
UTS_MACHINE := s390x
STACK_SIZE := $(if $(CONFIG_KASAN),32768,16384)
STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384)
CHECKFLAGS += -D__s390__ -D__s390x__
export LD_BFD

16
arch/s390/boot/compressed/Makefile
View File

@ -22,10 +22,10 @@ OBJCOPYFLAGS :=
OBJECTS := $(addprefix $(obj)/,$(obj-y))
LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS)
$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
$(call if_changed,ld)
OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info
OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
$(obj)/info.bin: vmlinux FORCE
$(call if_changed,objcopy)
@ -46,17 +46,17 @@ suffix-$(CONFIG_KERNEL_LZMA) := .lzma
suffix-$(CONFIG_KERNEL_LZO) := .lzo
suffix-$(CONFIG_KERNEL_XZ) := .xz
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
$(call if_changed,gzip)
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
$(call if_changed,bzip2)
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lz4)
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lzma)
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lzo)
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
$(call if_changed,xzkern)
OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed

14
arch/s390/configs/debug_defconfig
View File

@ -64,6 +64,8 @@ CONFIG_NUMA=y
CONFIG_PREEMPT=y
CONFIG_HZ_100=y
CONFIG_KEXEC_FILE=y
CONFIG_EXPOLINE=y
CONFIG_EXPOLINE_AUTO=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
@ -84,9 +86,11 @@ CONFIG_PCI_DEBUG=y
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_CHSC_SCH=y
CONFIG_VFIO_AP=m
CONFIG_CRASH_DUMP=y
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
CONFIG_PM_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
@ -161,8 +165,6 @@ CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NF_CT_NETLINK_TIMEOUT=m
CONFIG_NF_TABLES=m
CONFIG_NFT_EXTHDR=m
CONFIG_NFT_META=m
CONFIG_NFT_CT=m
CONFIG_NFT_COUNTER=m
CONFIG_NFT_LOG=m
@ -365,6 +367,8 @@ CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
CONFIG_DNS_RESOLVER=y
CONFIG_OPENVSWITCH=m
CONFIG_VSOCKETS=m
CONFIG_VIRTIO_VSOCKETS=m
CONFIG_NETLINK_DIAG=m
CONFIG_CGROUP_NET_PRIO=y
CONFIG_BPF_JIT=y
@ -461,6 +465,7 @@ CONFIG_PPTP=m
CONFIG_PPPOL2TP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_ISM=m
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
@ -486,9 +491,12 @@ CONFIG_MLX4_INFINIBAND=m
CONFIG_MLX5_INFINIBAND=m
CONFIG_VFIO=m
CONFIG_VFIO_PCI=m
CONFIG_VFIO_MDEV=m
CONFIG_VFIO_MDEV_DEVICE=m
CONFIG_VIRTIO_PCI=m
CONFIG_VIRTIO_BALLOON=m
CONFIG_VIRTIO_INPUT=y
CONFIG_S390_AP_IOMMU=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
@ -615,7 +623,6 @@ CONFIG_DEBUG_CREDENTIALS=y
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_CPU_STALL_TIMEOUT=300
CONFIG_NOTIFIER_ERROR_INJECTION=m
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
CONFIG_NETDEV_NOTIFIER_ERROR_INJECT=m
CONFIG_FAULT_INJECTION=y
CONFIG_FAILSLAB=y
@ -727,3 +734,4 @@ CONFIG_APPLDATA_BASE=y
CONFIG_KVM=m
CONFIG_KVM_S390_UCONTROL=y
CONFIG_VHOST_NET=m
CONFIG_VHOST_VSOCK=m

13
arch/s390/configs/performance_defconfig
View File

@ -65,6 +65,8 @@ CONFIG_NR_CPUS=512
CONFIG_NUMA=y
CONFIG_HZ_100=y
CONFIG_KEXEC_FILE=y
CONFIG_EXPOLINE=y
CONFIG_EXPOLINE_AUTO=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
@ -82,9 +84,11 @@ CONFIG_PCI=y
CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_CHSC_SCH=y
CONFIG_VFIO_AP=m
CONFIG_CRASH_DUMP=y
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
CONFIG_PM_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
@ -159,8 +163,6 @@ CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NF_CT_NETLINK_TIMEOUT=m
CONFIG_NF_TABLES=m
CONFIG_NFT_EXTHDR=m
CONFIG_NFT_META=m
CONFIG_NFT_CT=m
CONFIG_NFT_COUNTER=m
CONFIG_NFT_LOG=m
@ -362,6 +364,8 @@ CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
CONFIG_DNS_RESOLVER=y
CONFIG_OPENVSWITCH=m
CONFIG_VSOCKETS=m
CONFIG_VIRTIO_VSOCKETS=m
CONFIG_NETLINK_DIAG=m
CONFIG_CGROUP_NET_PRIO=y
CONFIG_BPF_JIT=y
@ -458,6 +462,7 @@ CONFIG_PPTP=m
CONFIG_PPPOL2TP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_ISM=m
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
@ -483,9 +488,12 @@ CONFIG_MLX4_INFINIBAND=m
CONFIG_MLX5_INFINIBAND=m
CONFIG_VFIO=m
CONFIG_VFIO_PCI=m
CONFIG_VFIO_MDEV=m
CONFIG_VFIO_MDEV_DEVICE=m
CONFIG_VIRTIO_PCI=m
CONFIG_VIRTIO_BALLOON=m
CONFIG_VIRTIO_INPUT=y
CONFIG_S390_AP_IOMMU=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
@ -666,3 +674,4 @@ CONFIG_APPLDATA_BASE=y
CONFIG_KVM=m
CONFIG_KVM_S390_UCONTROL=y
CONFIG_VHOST_NET=m
CONFIG_VHOST_VSOCK=m

79
arch/s390/defconfig
View File

@ -26,14 +26,23 @@ CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_PERF=y
CONFIG_NAMESPACES=y
CONFIG_USER_NS=y
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
# CONFIG_SYSFS_SYSCALL is not set
CONFIG_CHECKPOINT_RESTORE=y
CONFIG_BPF_SYSCALL=y
CONFIG_USERFAULTFD=y
# CONFIG_COMPAT_BRK is not set
CONFIG_PROFILING=y
CONFIG_LIVEPATCH=y
CONFIG_NR_CPUS=256
CONFIG_NUMA=y
CONFIG_HZ_100=y
CONFIG_KEXEC_FILE=y
CONFIG_CRASH_DUMP=y
CONFIG_HIBERNATION=y
CONFIG_PM_DEBUG=y
CONFIG_CMM=m
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_JUMP_LABEL=y
@ -44,11 +53,7 @@ CONFIG_BLK_DEV_INTEGRITY=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_IBM_PARTITION=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_LIVEPATCH=y
CONFIG_NR_CPUS=256
CONFIG_NUMA=y
CONFIG_HZ_100=y
CONFIG_KEXEC_FILE=y
CONFIG_BINFMT_MISC=m
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
@ -60,9 +65,6 @@ CONFIG_ZBUD=m
CONFIG_ZSMALLOC=m
CONFIG_ZSMALLOC_STAT=y
CONFIG_IDLE_PAGE_TRACKING=y
CONFIG_CRASH_DUMP=y
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
@ -98,6 +100,7 @@ CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_VIRTIO_BLK=y
CONFIG_SCSI=y
# CONFIG_SCSI_MQ_DEFAULT is not set
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_BLK_DEV_SR=y
@ -131,6 +134,7 @@ CONFIG_EQUALIZER=m
CONFIG_TUN=m
CONFIG_VIRTIO_NET=y
# CONFIG_NET_VENDOR_ALACRITECH is not set
# CONFIG_NET_VENDOR_AURORA is not set
# CONFIG_NET_VENDOR_CORTINA is not set
# CONFIG_NET_VENDOR_SOLARFLARE is not set
# CONFIG_NET_VENDOR_SOCIONEXT is not set
@ -157,33 +161,6 @@ CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_DWARF4=y
CONFIG_GDB_SCRIPTS=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_PAGEALLOC=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCK_STAT=y
CONFIG_DEBUG_LOCKDEP=y
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_SG=y
CONFIG_DEBUG_NOTIFIERS=y
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_LATENCYTOP=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
CONFIG_STACK_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_FUNCTION_PROFILER=y
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_S390_PTDUMP=y
CONFIG_CRYPTO_CRYPTD=m
CONFIG_CRYPTO_AUTHENC=m
CONFIG_CRYPTO_TEST=m
@ -193,6 +170,7 @@ CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CFB=m
CONFIG_CRYPTO_CTS=m
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_OFB=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=m
CONFIG_CRYPTO_CMAC=m
@ -231,7 +209,6 @@ CONFIG_CRYPTO_USER_API_HASH=m
CONFIG_CRYPTO_USER_API_SKCIPHER=m
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_ZCRYPT=m
CONFIG_ZCRYPT_MULTIDEVNODES=y
CONFIG_PKEY=m
CONFIG_CRYPTO_PAES_S390=m
CONFIG_CRYPTO_SHA1_S390=m
@ -247,4 +224,30 @@ CONFIG_CRC7=m
# CONFIG_XZ_DEC_ARM is not set
# CONFIG_XZ_DEC_ARMTHUMB is not set
# CONFIG_XZ_DEC_SPARC is not set
CONFIG_CMM=m
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_DWARF4=y
CONFIG_GDB_SCRIPTS=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_PAGEALLOC=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCK_STAT=y
CONFIG_DEBUG_LOCKDEP=y
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_SG=y
CONFIG_DEBUG_NOTIFIERS=y
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_LATENCYTOP=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
CONFIG_STACK_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_FUNCTION_PROFILER=y
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_S390_PTDUMP=y

5
arch/s390/include/asm/mmu_context.h
View File

@ -46,8 +46,6 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.asce_limit = STACK_TOP_MAX;
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_REGION3;
/* pgd_alloc() did not account this pud */
mm_inc_nr_puds(mm);
break;
case -PAGE_SIZE:
/* forked 5-level task, set new asce with new_mm->pgd */
@ -63,9 +61,6 @@ static inline int init_new_context(struct task_struct *tsk,
/* forked 2-level compat task, set new asce with new mm->pgd */
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
/* pgd_alloc() did not account this pmd */
mm_inc_nr_pmds(mm);
mm_inc_nr_puds(mm);
}
crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm));
return 0;

6
arch/s390/include/asm/pgalloc.h
View File

@ -36,11 +36,11 @@ static inline void crst_table_init(unsigned long *crst, unsigned long entry)
static inline unsigned long pgd_entry_type(struct mm_struct *mm)
{
if (mm->context.asce_limit <= _REGION3_SIZE)
if (mm_pmd_folded(mm))
return _SEGMENT_ENTRY_EMPTY;
if (mm->context.asce_limit <= _REGION2_SIZE)
if (mm_pud_folded(mm))
return _REGION3_ENTRY_EMPTY;
if (mm->context.asce_limit <= _REGION1_SIZE)
if (mm_p4d_folded(mm))
return _REGION2_ENTRY_EMPTY;
return _REGION1_ENTRY_EMPTY;
}

18
arch/s390/include/asm/pgtable.h
View File

@ -493,6 +493,24 @@ static inline int is_module_addr(void *addr)
_REGION_ENTRY_PROTECT | \
_REGION_ENTRY_NOEXEC)
static inline bool mm_p4d_folded(struct mm_struct *mm)
{
return mm->context.asce_limit <= _REGION1_SIZE;
}
#define mm_p4d_folded(mm) mm_p4d_folded(mm)
static inline bool mm_pud_folded(struct mm_struct *mm)
{
return mm->context.asce_limit <= _REGION2_SIZE;
}
#define mm_pud_folded(mm) mm_pud_folded(mm)
static inline bool mm_pmd_folded(struct mm_struct *mm)
{
return mm->context.asce_limit <= _REGION3_SIZE;
}
#define mm_pmd_folded(mm) mm_pmd_folded(mm)
static inline int mm_has_pgste(struct mm_struct *mm)
{
#ifdef CONFIG_PGSTE

2
arch/s390/include/asm/thread_info.h
View File

@ -14,7 +14,7 @@
* General size of kernel stacks
*/
#ifdef CONFIG_KASAN
#define THREAD_SIZE_ORDER 3
#define THREAD_SIZE_ORDER 4
#else
#define THREAD_SIZE_ORDER 2
#endif

6
arch/s390/include/asm/tlb.h
View File

@ -136,7 +136,7 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
unsigned long address)
{
if (tlb->mm->context.asce_limit <= _REGION3_SIZE)
if (mm_pmd_folded(tlb->mm))
return;
pgtable_pmd_page_dtor(virt_to_page(pmd));
tlb_remove_table(tlb, pmd);
@ -152,7 +152,7 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d,
unsigned long address)
{
if (tlb->mm->context.asce_limit <= _REGION1_SIZE)
if (mm_p4d_folded(tlb->mm))
return;
tlb_remove_table(tlb, p4d);
}
@ -167,7 +167,7 @@ static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d,
static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
unsigned long address)
{
if (tlb->mm->context.asce_limit <= _REGION2_SIZE)
if (mm_pud_folded(tlb->mm))
return;
tlb_remove_table(tlb, pud);
}

6
arch/s390/kernel/entry.S
View File

@ -236,10 +236,10 @@ ENTRY(__switch_to)
stmg %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task
lghi %r4,__TASK_stack
lghi %r1,__TASK_thread
lg %r5,0(%r4,%r3) # start of kernel stack of next
llill %r5,STACK_INIT
stg %r15,__THREAD_ksp(%r1,%r2) # store kernel stack of prev
lgr %r15,%r5
aghi %r15,STACK_INIT # end of kernel stack of next
lg %r15,0(%r4,%r3) # start of kernel stack of next
agr %r15,%r5 # end of kernel stack of next
stg %r3,__LC_CURRENT # store task struct of next
stg %r15,__LC_KERNEL_STACK # store end of kernel stack
lg %r15,__THREAD_ksp(%r1,%r3) # load kernel stack of next

2
arch/s390/kernel/perf_cpum_cf.c
View File

@ -373,7 +373,7 @@ static int __hw_perf_event_init(struct perf_event *event)
return -ENOENT;
if (ev > PERF_CPUM_CF_MAX_CTR)
return -EINVAL;
return -ENOENT;
/* Obtain the counter set to which the specified counter belongs */
set = get_counter_set(ev);

33
arch/s390/kernel/perf_cpum_sf.c
View File

@ -1842,10 +1842,30 @@ static void cpumsf_pmu_del(struct perf_event *event, int flags)
CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC, PERF_EVENT_CPUM_SF);
CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC_DIAG, PERF_EVENT_CPUM_SF_DIAG);
static struct attribute *cpumsf_pmu_events_attr[] = {
CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC),
NULL,
NULL,
/* Attribute list for CPU_SF.
*
* The availablitiy depends on the CPU_MF sampling facility authorization
* for basic + diagnositic samples. This is determined at initialization
* time by the sampling facility device driver.
* If the authorization for basic samples is turned off, it should be
* also turned off for diagnostic sampling.
*
* During initialization of the device driver, check the authorization
* level for diagnostic sampling and installs the attribute
* file for diagnostic sampling if necessary.
*
* For now install a placeholder to reference all possible attributes:
* SF_CYCLES_BASIC and SF_CYCLES_BASIC_DIAG.
* Add another entry for the final NULL pointer.
*/
enum {
SF_CYCLES_BASIC_ATTR_IDX = 0,
SF_CYCLES_BASIC_DIAG_ATTR_IDX,
SF_CYCLES_ATTR_MAX
};
static struct attribute *cpumsf_pmu_events_attr[SF_CYCLES_ATTR_MAX + 1] = {
[SF_CYCLES_BASIC_ATTR_IDX] = CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC)
};
PMU_FORMAT_ATTR(event, "config:0-63");
@ -2040,7 +2060,10 @@ static int __init init_cpum_sampling_pmu(void)
if (si.ad) {
sfb_set_limits(CPUM_SF_MIN_SDB, CPUM_SF_MAX_SDB);
cpumsf_pmu_events_attr[1] =
/* Sampling of diagnostic data authorized,
* install event into attribute list of PMU device.
*/
cpumsf_pmu_events_attr[SF_CYCLES_BASIC_DIAG_ATTR_IDX] =
CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC_DIAG);
}

6
arch/s390/kernel/vdso32/Makefile
View File

@ -37,7 +37,7 @@ KASAN_SANITIZE := n
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
# link rule for the .so file, .lds has to be first
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32)
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
$(call if_changed,vdso32ld)
# strip rule for the .so file
@ -46,12 +46,12 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
$(call if_changed,objcopy)
# assembly rules for the .S files
$(obj-vdso32): %.o: %.S
$(obj-vdso32): %.o: %.S FORCE
$(call if_changed_dep,vdso32as)
# actual build commands
quiet_cmd_vdso32ld = VDSO32L $@
cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $(filter %.lds %.o,$^) -o $@
quiet_cmd_vdso32as = VDSO32A $@
cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $<

6
arch/s390/kernel/vdso64/Makefile
View File

@ -37,7 +37,7 @@ KASAN_SANITIZE := n
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
# link rule for the .so file, .lds has to be first
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64)
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
$(call if_changed,vdso64ld)
# strip rule for the .so file
@ -46,12 +46,12 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
$(call if_changed,objcopy)
# assembly rules for the .S files
$(obj-vdso64): %.o: %.S
$(obj-vdso64): %.o: %.S FORCE
$(call if_changed_dep,vdso64as)
# actual build commands
quiet_cmd_vdso64ld = VDSO64L $@
cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $(filter %.lds %.o,$^) -o $@
quiet_cmd_vdso64as = VDSO64A $@
cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<

4
arch/s390/kernel/vmlinux.lds.S
View File

@ -154,14 +154,14 @@ SECTIONS
* uncompressed image info used by the decompressor
* it should match struct vmlinux_info
*/
.vmlinux.info 0 : {
.vmlinux.info 0 (INFO) : {
QUAD(_stext) /* default_lma */
QUAD(startup_continue) /* entry */
QUAD(__bss_start - _stext) /* image_size */
QUAD(__bss_stop - __bss_start) /* bss_size */
QUAD(__boot_data_start) /* bootdata_off */
QUAD(__boot_data_end - __boot_data_start) /* bootdata_size */
}
} :NONE
/* Debugging sections. */
STABS_DEBUG

1
arch/s390/mm/pgalloc.c
View File

@ -101,6 +101,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
mm->context.asce_limit = _REGION1_SIZE;
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
_ASCE_USER_BITS | _ASCE_TYPE_REGION2;
mm_inc_nr_puds(mm);
} else {
crst_table_init(table, _REGION1_ENTRY_EMPTY);
pgd_populate(mm, (pgd_t *) table, (p4d_t *) pgd);

1
arch/s390/numa/numa.c
View File

@ -53,6 +53,7 @@ int __node_distance(int a, int b)
{
return mode->distance ? mode->distance(a, b) : 0;
}
EXPORT_SYMBOL(__node_distance);
int numa_debug_enabled;

2
include/asm-generic/4level-fixup.h
View File

@ -3,7 +3,7 @@
#define _4LEVEL_FIXUP_H
#define __ARCH_HAS_4LEVEL_HACK
#define __PAGETABLE_PUD_FOLDED
#define __PAGETABLE_PUD_FOLDED 1
#define PUD_SHIFT PGDIR_SHIFT
#define PUD_SIZE PGDIR_SIZE

2
include/asm-generic/5level-fixup.h
View File

@ -3,7 +3,7 @@
#define _5LEVEL_FIXUP_H
#define __ARCH_HAS_5LEVEL_HACK
#define __PAGETABLE_P4D_FOLDED
#define __PAGETABLE_P4D_FOLDED 1
#define P4D_SHIFT PGDIR_SHIFT
#define P4D_SIZE PGDIR_SIZE

2
include/asm-generic/pgtable-nop4d-hack.h
View File

@ -5,7 +5,7 @@
#ifndef __ASSEMBLY__
#include <asm-generic/5level-fixup.h>
#define __PAGETABLE_PUD_FOLDED
#define __PAGETABLE_PUD_FOLDED 1
/*
* Having the pud type consist of a pgd gets the size right, and allows

2
include/asm-generic/pgtable-nop4d.h
View File

@ -4,7 +4,7 @@
#ifndef __ASSEMBLY__
#define __PAGETABLE_P4D_FOLDED
#define __PAGETABLE_P4D_FOLDED 1
typedef struct { pgd_t pgd; } p4d_t;

2
include/asm-generic/pgtable-nopmd.h
View File

@ -8,7 +8,7 @@
struct mm_struct;
#define __PAGETABLE_PMD_FOLDED
#define __PAGETABLE_PMD_FOLDED 1
/*
* Having the pmd type consist of a pud gets the size right, and allows

2
include/asm-generic/pgtable-nopud.h
View File

@ -9,7 +9,7 @@
#else
#include <asm-generic/pgtable-nop4d.h>
#define __PAGETABLE_PUD_FOLDED
#define __PAGETABLE_PUD_FOLDED 1
/*
* Having the pud type consist of a p4d gets the size right, and allows

16
include/asm-generic/pgtable.h
View File

@ -1127,4 +1127,20 @@ static inline bool arch_has_pfn_modify_check(void)
#endif
#endif
/*
* On some architectures it depends on the mm if the p4d/pud or pmd
* layer of the page table hierarchy is folded or not.
*/
#ifndef mm_p4d_folded
#define mm_p4d_folded(mm) __is_defined(__PAGETABLE_P4D_FOLDED)
#endif
#ifndef mm_pud_folded
#define mm_pud_folded(mm) __is_defined(__PAGETABLE_PUD_FOLDED)
#endif
#ifndef mm_pmd_folded
#define mm_pmd_folded(mm) __is_defined(__PAGETABLE_PMD_FOLDED)
#endif
#endif /* _ASM_GENERIC_PGTABLE_H */

8
include/linux/mm.h
View File

@ -1744,11 +1744,15 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address);
static inline void mm_inc_nr_puds(struct mm_struct *mm)
{
if (mm_pud_folded(mm))
return;
atomic_long_add(PTRS_PER_PUD * sizeof(pud_t), &mm->pgtables_bytes);
}
static inline void mm_dec_nr_puds(struct mm_struct *mm)
{
if (mm_pud_folded(mm))
return;
atomic_long_sub(PTRS_PER_PUD * sizeof(pud_t), &mm->pgtables_bytes);
}
#endif
@ -1768,11 +1772,15 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address);
static inline void mm_inc_nr_pmds(struct mm_struct *mm)
{
if (mm_pmd_folded(mm))
return;
atomic_long_add(PTRS_PER_PMD * sizeof(pmd_t), &mm->pgtables_bytes);
}
static inline void mm_dec_nr_pmds(struct mm_struct *mm)
{
if (mm_pmd_folded(mm))
return;
atomic_long_sub(PTRS_PER_PMD * sizeof(pmd_t), &mm->pgtables_bytes);
}
#endif