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ARM: fix the cockup in the previous patch

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Commit d6951f582c 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: 3a4d0c2172 ("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>
Tested-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Russell King
2019-02-13 16:32:23 -05:00
committed by Greg Kroah-Hartman
parent e7a8dabe92
commit bdd8fd8a2e
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mm/proc-macros.S
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@@ -278,7 +278,7 @@
* 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
@@ -316,7 +316,7 @@ 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