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From: Fuad Tabba <tabba@google.com>
To: linux-arm-kernel@lists.infradead.org
Cc: will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com,
	 maz@kernel.org, ardb@kernel.org, james.morse@arm.com,
	 alexandru.elisei@arm.com, suzuki.poulose@arm.com,
	robin.murphy@arm.com,  tabba@google.com
Subject: [PATCH v3 03/18] arm64: Apply errata to swsusp_arch_suspend_exit
Date: Thu, 20 May 2021 13:43:51 +0100	[thread overview]
Message-ID: <20210520124406.2731873-4-tabba@google.com> (raw)
In-Reply-To: <20210520124406.2731873-1-tabba@google.com>

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 <tabba@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


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  parent reply	other threads:[~2021-05-20 12:46 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20 12:43 [PATCH v3 00/18] Tidy up cache.S Fuad Tabba
2021-05-20 12:43 ` [PATCH v3 01/18] arm64: assembler: replace `kaddr` with `addr` Fuad Tabba
2021-05-20 12:43 ` [PATCH v3 02/18] arm64: assembler: add conditional cache fixups Fuad Tabba
2021-05-20 12:43 ` Fuad Tabba [this message]
2021-05-20 12:46   ` [PATCH v3 03/18] arm64: Apply errata to swsusp_arch_suspend_exit Mark Rutland
2021-05-20 12:43 ` [PATCH v3 04/18] arm64: assembler: user_alt label optional Fuad Tabba
2021-05-20 12:57   ` Mark Rutland
2021-05-21 11:46     ` Fuad Tabba
2021-05-21 13:05       ` Mark Rutland
2021-05-20 12:43 ` [PATCH v3 05/18] arm64: Do not enable uaccess for flush_icache_range Fuad Tabba
2021-05-20 14:02   ` Mark Rutland
2021-05-20 15:37     ` Mark Rutland
2021-05-21 12:18       ` Mark Rutland
2021-05-25 11:18   ` Catalin Marinas
2021-05-20 12:43 ` [PATCH v3 06/18] arm64: Do not enable uaccess for invalidate_icache_range Fuad Tabba
2021-05-20 14:13   ` Mark Rutland
2021-05-25 11:18   ` Catalin Marinas
2021-05-20 12:43 ` [PATCH v3 07/18] arm64: Downgrade flush_icache_range to invalidate Fuad Tabba
2021-05-20 14:15   ` Mark Rutland
2021-05-25 11:18   ` Catalin Marinas
2021-05-20 12:43 ` [PATCH v3 08/18] arm64: Move documentation of dcache_by_line_op Fuad Tabba
2021-05-20 14:17   ` Mark Rutland
2021-05-20 12:43 ` [PATCH v3 09/18] arm64: Fix comments to refer to correct function __flush_icache_range Fuad Tabba
2021-05-20 14:18   ` Mark Rutland
2021-05-20 12:43 ` [PATCH v3 10/18] arm64: __inval_dcache_area to take end parameter instead of size Fuad Tabba
2021-05-20 15:46   ` Mark Rutland
2021-05-20 12:43 ` [PATCH v3 11/18] arm64: dcache_by_line_op " Fuad Tabba
2021-05-20 15:48   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 12/18] arm64: __flush_dcache_area " Fuad Tabba
2021-05-20 16:06   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 13/18] arm64: __clean_dcache_area_poc " Fuad Tabba
2021-05-20 16:16   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 14/18] arm64: __clean_dcache_area_pop " Fuad Tabba
2021-05-20 16:19   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 15/18] arm64: __clean_dcache_area_pou " Fuad Tabba
2021-05-20 16:24   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 16/18] arm64: sync_icache_aliases " Fuad Tabba
2021-05-20 16:34   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 17/18] arm64: Fix cache maintenance function comments Fuad Tabba
2021-05-20 16:48   ` Mark Rutland
2021-05-20 12:44 ` [PATCH v3 18/18] arm64: Rename arm64-internal cache maintenance functions Fuad Tabba
2021-05-20 17:01   ` Mark Rutland

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