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arm64 updates for 4.11:

Browse source 
- Errata workarounds for Qualcomm's Falkor CPU
 - Qualcomm L2 Cache PMU driver
 - Qualcomm SMCCC firmware quirk
 - Support for DEBUG_VIRTUAL
 - CPU feature detection for userspace via MRS emulation
 - Preliminary work for the Statistical Profiling Extension
 - Misc cleanups and non-critical fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 - Errata workarounds for Qualcomm's Falkor CPU
 - Qualcomm L2 Cache PMU driver
 - Qualcomm SMCCC firmware quirk
 - Support for DEBUG_VIRTUAL
 - CPU feature detection for userspace via MRS emulation
 - Preliminary work for the Statistical Profiling Extension
 - Misc cleanups and non-critical fixes

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (74 commits)
  arm64/kprobes: consistently handle MRS/MSR with XZR
  arm64: cpufeature: correctly handle MRS to XZR
  arm64: traps: correctly handle MRS/MSR with XZR
  arm64: ptrace: add XZR-safe regs accessors
  arm64: include asm/assembler.h in entry-ftrace.S
  arm64: fix warning about swapper_pg_dir overflow
  arm64: Work around Falkor erratum 1003
  arm64: head.S: Enable EL1 (host) access to SPE when entered at EL2
  arm64: arch_timer: document Hisilicon erratum 161010101
  arm64: use is_vmalloc_addr
  arm64: use linux/sizes.h for constants
  arm64: uaccess: consistently check object sizes
  perf: add qcom l2 cache perf events driver
  arm64: remove wrong CONFIG_PROC_SYSCTL ifdef
  ARM: smccc: Update HVC comment to describe new quirk parameter
  arm64: do not trace atomic operations
  ACPI/IORT: Fix the error return code in iort_add_smmu_platform_device()
  ACPI/IORT: Fix iort_node_get_id() mapping entries indexing
  arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA
  perf: xgene: Include module.h
  ...
This commit is contained in:
Linus Torvalds 2017-02-22 10:46:44 -08:00
commit ca78d3173c
85 changed files with 2396 additions and 439 deletions
Download patch file Download diff file Expand all files Collapse all files

15
mm/cma.c
View file

@ -235,18 +235,13 @@ int __init cma_declare_contiguous(phys_addr_t base,
phys_addr_t highmem_start;
int ret = 0;
#ifdef CONFIG_X86
/*
* high_memory isn't direct mapped memory so retrieving its physical
* address isn't appropriate. But it would be useful to check the
* physical address of the highmem boundary so it's justifiable to get
* the physical address from it. On x86 there is a validation check for
* this case, so the following workaround is needed to avoid it.
* We can't use __pa(high_memory) directly, since high_memory
* isn't a valid direct map VA, and DEBUG_VIRTUAL will (validly)
* complain. Find the boundary by adding one to the last valid
* address.
*/
highmem_start = __pa_nodebug(high_memory);
#else
highmem_start = __pa(high_memory);
#endif
highmem_start = __pa(high_memory - 1) + 1;
pr_debug("%s(size %pa, base %pa, limit %pa alignment %pa)\n",
__func__, &size, &base, &limit, &alignment);

15
mm/kasan/kasan_init.c
View file

@ -15,6 +15,7 @@
#include <linux/kasan.h>
#include <linux/kernel.h>
#include <linux/memblock.h>
#include <linux/mm.h>
#include <linux/pfn.h>
#include <asm/page.h>
@ -49,7 +50,7 @@ static void __init zero_pte_populate(pmd_t *pmd, unsigned long addr,
pte_t *pte = pte_offset_kernel(pmd, addr);
pte_t zero_pte;
zero_pte = pfn_pte(PFN_DOWN(__pa(kasan_zero_page)), PAGE_KERNEL);
zero_pte = pfn_pte(PFN_DOWN(__pa_symbol(kasan_zero_page)), PAGE_KERNEL);
zero_pte = pte_wrprotect(zero_pte);
while (addr + PAGE_SIZE <= end) {
@ -69,7 +70,7 @@ static void __init zero_pmd_populate(pud_t *pud, unsigned long addr,
next = pmd_addr_end(addr, end);
if (IS_ALIGNED(addr, PMD_SIZE) && end - addr >= PMD_SIZE) {
pmd_populate_kernel(&init_mm, pmd, kasan_zero_pte);
pmd_populate_kernel(&init_mm, pmd, lm_alias(kasan_zero_pte));
continue;
}
@ -92,9 +93,9 @@ static void __init zero_pud_populate(pgd_t *pgd, unsigned long addr,
if (IS_ALIGNED(addr, PUD_SIZE) && end - addr >= PUD_SIZE) {
pmd_t *pmd;
pud_populate(&init_mm, pud, kasan_zero_pmd);
pud_populate(&init_mm, pud, lm_alias(kasan_zero_pmd));
pmd = pmd_offset(pud, addr);
pmd_populate_kernel(&init_mm, pmd, kasan_zero_pte);
pmd_populate_kernel(&init_mm, pmd, lm_alias(kasan_zero_pte));
continue;
}
@ -135,11 +136,11 @@ void __init kasan_populate_zero_shadow(const void *shadow_start,
* puds,pmds, so pgd_populate(), pud_populate()
* is noops.
*/
pgd_populate(&init_mm, pgd, kasan_zero_pud);
pgd_populate(&init_mm, pgd, lm_alias(kasan_zero_pud));
pud = pud_offset(pgd, addr);
pud_populate(&init_mm, pud, kasan_zero_pmd);
pud_populate(&init_mm, pud, lm_alias(kasan_zero_pmd));
pmd = pmd_offset(pud, addr);
pmd_populate_kernel(&init_mm, pmd, kasan_zero_pte);
pmd_populate_kernel(&init_mm, pmd, lm_alias(kasan_zero_pte));
continue;
}

4
mm/usercopy.c
View file

@ -108,13 +108,13 @@ static inline const char *check_kernel_text_object(const void *ptr,
* __pa() is not just the reverse of __va(). This can be detected
* and checked:
*/
textlow_linear = (unsigned long)__va(__pa(textlow));
textlow_linear = (unsigned long)lm_alias(textlow);
/* No different mapping: we're done. */
if (textlow_linear == textlow)
return NULL;
/* Check the secondary mapping... */
texthigh_linear = (unsigned long)__va(__pa(texthigh));
texthigh_linear = (unsigned long)lm_alias(texthigh);
if (overlaps(ptr, n, textlow_linear, texthigh_linear))
return "<linear kernel text>";