[PATCH 2/3] arm64: Remove unnecessary ISBs from set_{pte, pmd, pud}
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2018-06-20 15:32:08
On Tue, Jun 19, 2018 at 01:48:14PM +0100, Will Deacon wrote:
Commit 7f0b1bf04511 ("arm64: Fix barriers used for page table modifications")
fixed a reported issue with fixmap page-table entries not being visible
to the walker due to a missing DSB instruction. At the same time, it added
ISB instructions to the arm64 set_{pte,pmd,pud} functions, which are not
required by the architecture and make little sense in isolation.
Remove the redundant ISBs.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Leif Lindholm <redacted>
Cc: Steve Capper <redacted>
Signed-off-by: Will Deacon <redacted>Since I no longer remember the reason I added the ISBs in the first place: Acked-by: Catalin Marinas <catalin.marinas@arm.com>