[PATCH v2 01/16] arm64: Apply errata to swsusp_arch_suspend_exit

[Fuad Tabba]

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 at arm.com>
Signed-off-by: Fuad Tabba <tabba at google.com>
---
 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