Re: [PATCH v3 03/18] arm64: Apply errata to swsusp_arch_suspend_exit
From: Mark Rutland <mark.rutland@arm.com>
Date: 2021-05-20 12:55:36
On Thu, May 20, 2021 at 01:43:51PM +0100, Fuad Tabba wrote:
The Arm errata covered by ARM64_WORKAROUND_CLEAN_CACHE require that "dc cvau" instructions get promoted to "dc civac". Reported-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Fuad Tabba <redacted>
Acked-by: Mark Rutland <mark.rutland@arm.com> Mark.
quoted hunk ↗ jump to hunk
--- arch/arm64/kernel/hibernate-asm.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)diff --git a/arch/arm64/kernel/hibernate-asm.S b/arch/arm64/kernel/hibernate-asm.S index 8ccca660034e..0ed2f72a6b94 100644 --- a/arch/arm64/kernel/hibernate-asm.S +++ b/arch/arm64/kernel/hibernate-asm.S@@ -91,7 +91,8 @@ SYM_CODE_START(swsusp_arch_suspend_exit) raw_dcache_line_size x2, x3 sub x3, x2, #1 bic x4, x10, x3 -2: dc cvau, x4 /* clean D line / unified line */ +2: /* clean D line / unified line */ +alternative_insn "dc cvau, x4", "dc civac, x4", ARM64_WORKAROUND_CLEAN_CACHE add x4, x4, x2 cmp x4, x1 b.lo 2b-- 2.31.1.751.gd2f1c929bd-goog
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