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arm64: move kimage_vaddr to .rodata 

This datum is not referenced from .idmap.text: it does not need to be
mapped in idmap. Lets move it to .rodata as it is never written to after
early boot of the primary CPU.
(Maybe .data.ro_after_init would be cleaner though?)

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Remi Denis-Courmont 2020-03-12 11:40:02 +02:00 committed by Catalin Marinas
parent dc374b477f
commit 6cf9a2dce6
1 changed files with 7 additions and 5 deletions
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12
arch/arm64/kernel/head.S
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@ -458,17 +458,19 @@ SYM_FUNC_START_LOCAL(__primary_switched)
b start_kernel
SYM_FUNC_END(__primary_switched)
.pushsection ".rodata", "a"
SYM_DATA_START(kimage_vaddr)
.quad _text - TEXT_OFFSET
SYM_DATA_END(kimage_vaddr)
EXPORT_SYMBOL(kimage_vaddr)
.popsection
/*
* end early head section, begin head code that is also used for
* hotplug and needs to have the same protections as the text region
*/
.section ".idmap.text","awx"
SYM_DATA_START(kimage_vaddr)
.quad _text - TEXT_OFFSET
SYM_DATA_END(kimage_vaddr)
EXPORT_SYMBOL(kimage_vaddr)
/*
* If we're fortunate enough to boot at EL2, ensure that the world is
* sane before dropping to EL1.