arm64: tlb: don't set the ttl value in flush_tlb_page_nosync

flush_tlb_page_nosync() may be called from pmd level, so we
can not set the ttl = 3 here.

The callstack is as follows:

	pmdp_set_access_flags
		ptep_set_access_flags
			flush_tlb_fix_spurious_fault
				flush_tlb_page
					flush_tlb_page_nosync

Fixes: e735b98a5fe0 ("arm64: Add tlbi_user_level TLB invalidation helper")
Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
Link: https://lore.kernel.org/r/20200710094158.468-1-yezhenyu2@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index 39aed2e..2cb275e 100644 (file)
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -209,9 +209,8 @@ static inline void flush_tlb_page_nosync(struct vm_area_struct *vma,
        unsigned long addr = __TLBI_VADDR(uaddr, ASID(vma->vm_mm));
 
        dsb(ishst);
-       /* This function is only called on a small page */
-       __tlbi_level(vale1is, addr, 3);
-       __tlbi_user_level(vale1is, addr, 3);
+       __tlbi(vale1is, addr);
+       __tlbi_user(vale1is, addr);
 }
 
 static inline void flush_tlb_page(struct vm_area_struct *vma,