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[0/2] x86/snp: Add kexec support

Message ID cover.1708390906.git.ashish.kalra@amd.com
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Series x86/snp: Add kexec support | expand

Message

Kalra, Ashish Feb. 20, 2024, 1:18 a.m. UTC 
From: Ashish Kalra <ashish.kalra@amd.com>

The patchset adds bits and pieces to get kexec (and crashkernel) work on
SNP guest.

This patchset requires [1] for chained guest kexec to work correctly.

[1]: https://lore.kernel.org/lkml/20240219225451.787816-1-Ashish.Kalra@amd.com/

Ashish Kalra (2):
  x86/mm: Do not zap PMD entry mapping unaccepted memory table during
    kdump.
  x86/snp: Convert shared memory back to private on kexec

 arch/x86/include/asm/probe_roms.h |   1 +
 arch/x86/include/asm/sev.h        |   8 ++
 arch/x86/kernel/probe_roms.c      |  16 +++
 arch/x86/kernel/sev.c             | 211 ++++++++++++++++++++++++++++++
 arch/x86/mm/init_64.c             |   4 +-
 arch/x86/mm/mem_encrypt_amd.c     |  18 ++-
 6 files changed, 256 insertions(+), 2 deletions(-)