arm64/mm: Define defer_reserve_crashkernel()

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Crash kernel memory reservation gets deferred, when either CONFIG_ZONE_DMA
or CONFIG_ZONE_DMA32 config is enabled on the platform. This deferral also
impacts overall linear mapping creation including the crash kernel itself.
Just encapsulate this deferral check in a new helper for better clarity.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220705062556.1845734-1-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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Anshuman Khandual 2022-07-05 11:55:56 +05:30 • committed by Will Deacon

parent af483947d4

commit 4890cc18f9

3 changed files with 9 additions and 6 deletions

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5

arch/arm64/include/asm/memory.h

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4

arch/arm64/mm/init.c

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6

arch/arm64/mm/mmu.c

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