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author | 2024-01-24 13:12:42 +0800 | |
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committer | 2024-02-23 17:48:22 -0800 | |
commit | 443cbaf9e2fdbef7d7cae457434a6cb8a679441b (patch) | |
tree | b8e215ce96c62496ef0035e5c63f00e34b428f8d /arch/x86/kernel/vmcore_info_64.c | |
parent | kexec: split crashkernel reservation code out from crash_core.c (diff) | |
download | linux-443cbaf9e2fdbef7d7cae457434a6cb8a679441b.tar.gz linux-443cbaf9e2fdbef7d7cae457434a6cb8a679441b.tar.bz2 linux-443cbaf9e2fdbef7d7cae457434a6cb8a679441b.zip |
crash: split vmcoreinfo exporting code out from crash_core.c
Now move the relevant codes into separate files:
kernel/crash_reserve.c, include/linux/crash_reserve.h.
And add config item CRASH_RESERVE to control its enabling.
And also update the old ifdeffery of CONFIG_CRASH_CORE, including of
<linux/crash_core.h> and config item dependency on CRASH_CORE
accordingly.
And also do renaming as follows:
- arch/xxx/kernel/{crash_core.c => vmcore_info.c}
because they are only related to vmcoreinfo exporting on x86, arm64,
riscv.
And also Remove config item CRASH_CORE, and rely on CONFIG_KEXEC_CORE to
decide if build in crash_core.c.
[yang.lee@linux.alibaba.com: remove duplicated include in vmcore_info.c]
Link: https://lkml.kernel.org/r/20240126005744.16561-1-yang.lee@linux.alibaba.com
Link: https://lkml.kernel.org/r/20240124051254.67105-3-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Pingfan Liu <piliu@redhat.com>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Michael Kelley <mhklinux@outlook.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/x86/kernel/vmcore_info_64.c')
-rw-r--r-- | arch/x86/kernel/vmcore_info_64.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/kernel/vmcore_info_64.c b/arch/x86/kernel/vmcore_info_64.c new file mode 100644 index 000000000000..0dec7d868754 --- /dev/null +++ b/arch/x86/kernel/vmcore_info_64.c @@ -0,0 +1,24 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/vmcore_info.h> +#include <linux/pgtable.h> + +#include <asm/setup.h> + +void arch_crash_save_vmcoreinfo(void) +{ + u64 sme_mask = sme_me_mask; + + VMCOREINFO_NUMBER(phys_base); + VMCOREINFO_SYMBOL(init_top_pgt); + vmcoreinfo_append_str("NUMBER(pgtable_l5_enabled)=%d\n", + pgtable_l5_enabled()); + +#ifdef CONFIG_NUMA + VMCOREINFO_SYMBOL(node_data); + VMCOREINFO_LENGTH(node_data, MAX_NUMNODES); +#endif + vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset()); + VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE); + VMCOREINFO_NUMBER(sme_mask); +} |