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powerpc/fsl_booke/kaslr: export offset in VMCOREINFO ELF notes

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Like all other architectures such as x86 or arm64, include KASLR offset
in VMCOREINFO ELF notes to assist in debugging. After this, we can use
crash --kaslr option to parse vmcore generated from a kaslr kernel.

Note: The crash tool needs to support --kaslr too.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Jason Yan 2019-09-20 17:45:45 +08:00 committed by Michael Ellerman
parent 921a79b780
commit 74277f00b2
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/machine_kexec.c
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@ -86,6 +86,7 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_STRUCT_SIZE(mmu_psize_def);
VMCOREINFO_OFFSET(mmu_psize_def, shift);
#endif
vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
}
/*