[PATCH] arm64: mm: Pass origial fault address to handle_mm_fault()

From: Gavin Shan
Date: Mon Jun 14 2021 - 06:26:11 EST


Currently, the lower bits of fault address is cleared before it's
passed to handle_mm_fault(). It's unnecessary since generic code
does same thing since the commit 1a29d85eb0f19 ("mm: use vmf->address
instead of of vmf->virtual_address").

This passes the original fault address to handle_mm_fault() in case
the generic code needs to know the exact fault address.

Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
---
arch/arm64/mm/fault.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 871c82ab0a30..e2883237216d 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -504,7 +504,7 @@ static vm_fault_t __do_page_fault(struct mm_struct *mm, unsigned long addr,
*/
if (!(vma->vm_flags & vm_flags))
return VM_FAULT_BADACCESS;
- return handle_mm_fault(vma, addr & PAGE_MASK, mm_flags, regs);
+ return handle_mm_fault(vma, addr, mm_flags, regs);
}

static bool is_el0_instruction_abort(unsigned int esr)
--
2.23.0