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84c57dbd3c
Since commit 23c85094fe18 ("proc/kcore: add vmcoreinfo note to /proc/kcore")
the kernel has exported the vmcoreinfo PT_NOTE on /proc/kcore as well
as /proc/vmcore.
arm64 only exposes it's additional arch information via
arch_crash_save_vmcoreinfo() if built with CONFIG_KEXEC, as kdump was
previously the only user of vmcoreinfo.
Move this weak function to a separate file that is built at the same
time as its caller in kernel/crash_core.c. This ensures values like
'kimage_voffset' are always present in the vmcoreinfo PT_NOTE.
CC: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
20 lines
520 B
C
20 lines
520 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) Linaro.
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* Copyright (C) Huawei Futurewei Technologies.
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*/
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#include <linux/crash_core.h>
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#include <asm/memory.h>
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void arch_crash_save_vmcoreinfo(void)
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{
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VMCOREINFO_NUMBER(VA_BITS);
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/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
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vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
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kimage_voffset);
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vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
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PHYS_OFFSET);
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vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
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}
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