diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2022-07-05 09:25:56 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-07-05 13:43:47 +0300 |
| commit | 4890cc18f94979b406f95708f8cb238eb2d0e5a9 (patch) | |
| tree | 9205ecaabb6714851474722b9d21b8d20d80a80b /arch/arm64/include/asm/memory.h | |
| parent | af483947d472eccb79e42059276c4deed76f99a6 (diff) | |
| download | linux-4890cc18f94979b406f95708f8cb238eb2d0e5a9.tar.xz | |
arm64/mm: Define defer_reserve_crashkernel()
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>
Diffstat (limited to 'arch/arm64/include/asm/memory.h')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index 0af70d9abede..b09b300360cf 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -351,6 +351,11 @@ static inline void *phys_to_virt(phys_addr_t x) }) void dump_mem_limit(void); + +static inline bool defer_reserve_crashkernel(void) +{ + return IS_ENABLED(CONFIG_ZONE_DMA) || IS_ENABLED(CONFIG_ZONE_DMA32); +} #endif /* !ASSEMBLY */ /* |