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authorHari Bathini <hbathini@linux.ibm.com>2020-07-29 17:12:58 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2020-07-29 23:47:54 +1000
commit1a1cf93c200581c72a3cd521e1e0a1a3b5d0077d (patch)
treecb3c966e21b0bd1d04a7d33fa2199d5d1109a2ae /tools/perf/scripts/python
parent7c64e21a1c5a5bcd651d895b8faa68e9cdcc433d (diff)
powerpc/kexec_file: Setup backup region for kdump kernel
Though kdump kernel boots from loaded address, the first 64KB of it is copied down to real 0. So, setup a backup region and let purgatory copy the first 64KB of crashed kernel into this backup region before booting into kdump kernel. Update reserve map with backup region and crashed kernel's memory to avoid kdump kernel from accidentially using that memory. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/159602294718.575379.16216507537038008623.stgit@hbathini
Diffstat (limited to 'tools/perf/scripts/python')
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