Unverified Commit e2c79b4c authored by Palmer Dabbelt's avatar Palmer Dabbelt
Browse files

Revert "riscv: mm: accelerate pagefault when badaccess" 



I accidentally picked up an earlier version of this patch, which had
already landed via mm.  The patch  I picked up contains a bug, which I
kept as I thought it was a fix.  So let's just revert it.

This reverts commit 4c6c0020.

Fixes: 4c6c0020 ("riscv: mm: accelerate pagefault when badaccess")
Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240530164451.21336-1-palmer@rivosinc.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 994af182

arch/riscv/mm/fault.c

+2 −2
Original line number Diff line number Diff line
@@ -293,8 +293,8 @@ void handle_page_fault(struct pt_regs *regs) 
	if (unlikely(access_error(cause, vma))) {

		vma_end_read(vma);

		count_vm_vma_lock_event(VMA_LOCK_SUCCESS);

		tsk->thread.bad_cause = SEGV_ACCERR;

		bad_area_nosemaphore(regs, code, addr);

		tsk->thread.bad_cause = cause;

		bad_area_nosemaphore(regs, SEGV_ACCERR, addr);

		return;

	}