arm64: move kimage_vaddr to .rodata (6cf9a2dc) · Commits · 戴 / test

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>

arch/arm64/kernel/head.S

+7 −5

Original line number	Diff line number	Diff line
		@@ -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.

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