github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 10:04:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: mm: Refactor flush_tlb_page() to use __tlbi_level_asid()

Browse Source 
Now that we have __tlbi_level_asid(), let's refactor the
*flush_tlb_page*() variants to use it rather than open coding.

The emitted tlbi(s) is/are intended to be exactly the same as before; no
TTL hint is provided. Although the spec for flush_tlb_page() allows for
setting the TTL hint to 3, it turns out that
flush_tlb_fix_spurious_fault_pmd() depends on
local_flush_tlb_page_nonotify() to invalidate the level 2 entry. This
will be fixed separately.

Reviewed-by: Linu Cherian <linu.cherian@arm.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ryan Roberts 2026-03-02 13:55:56 +00:00 committed by Catalin Marinas
parent c753d667d9
commit 64212d6893
1 changed files with 2 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm64/include/asm/tlbflush.h
View File

@ -346,12 +346,8 @@ static inline void flush_tlb_mm(struct mm_struct *mm)
static inline void __local_flush_tlb_page_nonotify_nosync(struct mm_struct *mm,
unsigned long uaddr)
{
unsigned long addr;
dsb(nshst);
addr = __TLBI_VADDR(uaddr, ASID(mm));
__tlbi(vale1, addr);
__tlbi_user(vale1, addr);
__tlbi_level_asid(vale1, uaddr, TLBI_TTL_UNKNOWN, ASID(mm));
}
static inline void local_flush_tlb_page_nonotify(struct vm_area_struct *vma,
@ -373,12 +369,8 @@ static inline void local_flush_tlb_page(struct vm_area_struct *vma,
static inline void __flush_tlb_page_nosync(struct mm_struct *mm,
unsigned long uaddr)
{
unsigned long addr;
dsb(ishst);
addr = __TLBI_VADDR(uaddr, ASID(mm));
__tlbi(vale1is, addr);
__tlbi_user(vale1is, addr);
__tlbi_level_asid(vale1is, uaddr, TLBI_TTL_UNKNOWN, ASID(mm));
mmu_notifier_arch_invalidate_secondary_tlbs(mm, uaddr & PAGE_MASK,
(uaddr & PAGE_MASK) + PAGE_SIZE);
}