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| author | Baoquan He <bhe@redhat.com> | 2023-09-14 11:31:40 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-04 10:41:58 -0700 |
| commit | fdc268232dbbae8d3acdc5536370b53327be3bb0 (patch) | |
| tree | 4cefbeb7b2db1c87320b04ec1abc4510aea02cb1 /arch/arm64/include/asm/crash_core.h | |
| parent | 9c08a2a139fe83f217625ee0352ce531b9a666ea (diff) | |
| download | linux-stable-fdc268232dbbae8d3acdc5536370b53327be3bb0.tar.gz linux-stable-fdc268232dbbae8d3acdc5536370b53327be3bb0.tar.bz2 linux-stable-fdc268232dbbae8d3acdc5536370b53327be3bb0.zip | |
arm64: kdump: use generic interface to simplify crashkernel reservation
With the help of newly changed function parse_crashkernel() and generic
reserve_crashkernel_generic(), crashkernel reservation can be simplified
by steps:
1) Add a new header file <asm/crash_core.h>, and define CRASH_ALIGN,
CRASH_ADDR_LOW_MAX, CRASH_ADDR_HIGH_MAX and
DEFAULT_CRASH_KERNEL_LOW_SIZE in <asm/crash_core.h>;
2) Add arch_reserve_crashkernel() to call parse_crashkernel() and
reserve_crashkernel_generic();
3) Add ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION Kconfig in
arch/arm64/Kconfig.
The old reserve_crashkernel_low() and reserve_crashkernel() can be
removed.
Link: https://lkml.kernel.org/r/20230914033142.676708-8-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Jiahao <chenjiahao16@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/arm64/include/asm/crash_core.h')
| -rw-r--r-- | arch/arm64/include/asm/crash_core.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/crash_core.h b/arch/arm64/include/asm/crash_core.h new file mode 100644 index 000000000000..9f5c8d339f44 --- /dev/null +++ b/arch/arm64/include/asm/crash_core.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef _ARM64_CRASH_CORE_H +#define _ARM64_CRASH_CORE_H + +/* Current arm64 boot protocol requires 2MB alignment */ +#define CRASH_ALIGN SZ_2M + +#define CRASH_ADDR_LOW_MAX arm64_dma_phys_limit +#define CRASH_ADDR_HIGH_MAX (PHYS_MASK + 1) +#endif |