diff mbox series

[for-stable-v4.4,53/53] ARM: fix the cockup in the previous patch

Message ID 20191105205846.1394-54-ardb@kernel.org (mailing list archive)
State New, archived
Headers show
Series ARM: spectre v1/v2 mitigations | expand

Commit Message

Ard Biesheuvel Nov. 5, 2019, 8:58 p.m. UTC 
From: Russell King <rmk+kernel@armlinux.org.uk>

Commit d6951f582cc50ba0ad22ef46b599740966599b14 upstream.

The intention in the previous patch was to only place the processor
tables in the .rodata section if big.Little was being built and we
wanted the branch target hardening, but instead (due to the way it
was tested) it ended up always placing the tables into the .rodata
section.

Although harmless, let's correct this anyway.

Fixes: 3a4d0c2172bc ("ARM: ensure that processor vtables is not lost after boot")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David A. Long <dave.long@linaro.org>
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/arm/mm/proc-macros.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index d36a283b4099..e6bfdcc381f8 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -263,7 +263,7 @@ 
  * If we are building for big.Little with branch predictor hardening,
  * we need the processor function tables to remain available after boot.
  */
-#if 1 // defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
+#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
 	.section ".rodata"
 #endif
 	.type	\name\()_processor_functions, #object
@@ -301,7 +301,7 @@  ENTRY(\name\()_processor_functions)
 	.endif
 
 	.size	\name\()_processor_functions, . - \name\()_processor_functions
-#if 1 // defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
+#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
 	.previous
 #endif
 .endm