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arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives

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The identity map is mapped as both writeable and executable by the
SWAPPER_MM_MMUFLAGS and this is relied upon by the kpti code to manage
a synchronisation flag. Update the .pushsection flags to reflect the
actual mapping attributes.

Reported-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon
2018-01-29 12:00:00 +00:00
committed by Catalin Marinas
parent 79ddab3b05
commit 439e70e27a
4 changed files with 7 additions and 7 deletions
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arch/arm64/kernel/sleep.S
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@@ -96,7 +96,7 @@ ENTRY(__cpu_suspend_enter)
ret
ENDPROC(__cpu_suspend_enter)
.pushsection ".idmap.text", "ax"
.pushsection ".idmap.text", "awx"
ENTRY(cpu_resume)
bl el2_setup // if in EL2 drop to EL1 cleanly
bl __cpu_setup