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arm64 fixes for -rc3

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- Avoid erroneously marking untagged pages with PG_mte_tagged
 
 - Always reset KASAN tags for destination page in copy_page()
 
 - Mark PMU header functions 'static inline'
 
 - Fix some sparse warnings due to missing casts
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A mixture of compiler/static checker resolutions and a couple of MTE
  fixes:

   - Avoid erroneously marking untagged pages with PG_mte_tagged

   - Always reset KASAN tags for destination page in copy_page()

   - Mark PMU header functions 'static inline'

   - Fix some sparse warnings due to missing casts"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mte: Do not set PG_mte_tagged if tags were not initialized
  arm64: Also reset KASAN tag if page is not PG_mte_tagged
  arm64: perf: Mark all accessor functions inline
  ARM: perf: Mark all accessor functions inline
  arm64: vdso: Pass (void *) to virt_to_page()
  arm64/mm: mark private VM_FAULT_X defines as vm_fault_t
This commit is contained in:
Linus Torvalds 2023-05-19 11:05:42 -07:00
commit 4ffd96c962
6 changed files with 14 additions and 16 deletions
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6
arch/arm/include/asm/arm_pmuv3.h
View File

@ -92,7 +92,7 @@
#define RETURN_READ_PMEVCNTRN(n) \
return read_sysreg(PMEVCNTR##n)
static unsigned long read_pmevcntrn(int n)
static inline unsigned long read_pmevcntrn(int n)
{
PMEVN_SWITCH(n, RETURN_READ_PMEVCNTRN);
return 0;
@ -100,14 +100,14 @@ static unsigned long read_pmevcntrn(int n)
#define WRITE_PMEVCNTRN(n) \
write_sysreg(val, PMEVCNTR##n)
static void write_pmevcntrn(int n, unsigned long val)
static inline void write_pmevcntrn(int n, unsigned long val)
{
PMEVN_SWITCH(n, WRITE_PMEVCNTRN);
}
#define WRITE_PMEVTYPERN(n) \
write_sysreg(val, PMEVTYPER##n)
static void write_pmevtypern(int n, unsigned long val)
static inline void write_pmevtypern(int n, unsigned long val)
{
PMEVN_SWITCH(n, WRITE_PMEVTYPERN);
}

6
arch/arm64/include/asm/arm_pmuv3.h
View File

@ -13,7 +13,7 @@
#define RETURN_READ_PMEVCNTRN(n) \
return read_sysreg(pmevcntr##n##_el0)
static unsigned long read_pmevcntrn(int n)
static inline unsigned long read_pmevcntrn(int n)
{
PMEVN_SWITCH(n, RETURN_READ_PMEVCNTRN);
return 0;
@ -21,14 +21,14 @@ static unsigned long read_pmevcntrn(int n)
#define WRITE_PMEVCNTRN(n) \
write_sysreg(val, pmevcntr##n##_el0)
static void write_pmevcntrn(int n, unsigned long val)
static inline void write_pmevcntrn(int n, unsigned long val)
{
PMEVN_SWITCH(n, WRITE_PMEVCNTRN);
}
#define WRITE_PMEVTYPERN(n) \
write_sysreg(val, pmevtyper##n##_el0)
static void write_pmevtypern(int n, unsigned long val)
static inline void write_pmevtypern(int n, unsigned long val)
{
PMEVN_SWITCH(n, WRITE_PMEVTYPERN);
}

7
arch/arm64/kernel/mte.c
View File

@ -66,13 +66,10 @@ void mte_sync_tags(pte_t old_pte, pte_t pte)
return;
/* if PG_mte_tagged is set, tags have already been initialised */
for (i = 0; i < nr_pages; i++, page++) {
if (!page_mte_tagged(page)) {
for (i = 0; i < nr_pages; i++, page++)
if (!page_mte_tagged(page))
mte_sync_page_tags(page, old_pte, check_swap,
pte_is_tagged);
set_page_mte_tagged(page);
}
}
/* ensure the tags are visible before the PTE is set */
smp_wmb();

2
arch/arm64/kernel/vdso.c
View File

@ -288,7 +288,7 @@ static int aarch32_alloc_kuser_vdso_page(void)
memcpy((void *)(vdso_page + 0x1000 - kuser_sz), __kuser_helper_start,
kuser_sz);
aarch32_vectors_page = virt_to_page(vdso_page);
aarch32_vectors_page = virt_to_page((void *)vdso_page);
return 0;
}

5
arch/arm64/mm/copypage.c
View File

@ -21,9 +21,10 @@ void copy_highpage(struct page *to, struct page *from)
copy_page(kto, kfrom);
if (kasan_hw_tags_enabled())
page_kasan_tag_reset(to);
if (system_supports_mte() && page_mte_tagged(from)) {
if (kasan_hw_tags_enabled())
page_kasan_tag_reset(to);
/* It's a new page, shouldn't have been tagged yet */
WARN_ON_ONCE(!try_page_mte_tagging(to));
mte_copy_page_tags(kto, kfrom);

4
arch/arm64/mm/fault.c
View File

@ -480,8 +480,8 @@ static void do_bad_area(unsigned long far, unsigned long esr,
}
}
#define VM_FAULT_BADMAP 0x010000
#define VM_FAULT_BADACCESS 0x020000
#define VM_FAULT_BADMAP ((__force vm_fault_t)0x010000)
#define VM_FAULT_BADACCESS ((__force vm_fault_t)0x020000)
static vm_fault_t __do_page_fault(struct mm_struct *mm, unsigned long addr,
unsigned int mm_flags, unsigned long vm_flags,