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| author |   Janosch Frank <frankja@linux.ibm.com> | 2022-07-20 12:43:28 +0000 |
|---|---|---|
| committer |   Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-28 18:05:24 +0200 |
| commit | a0c0c44e9aa2b5da876467083c359b368f3ce95e (patch) | |
| tree | 245175896aef959b5640ba651d6e0b52f534c721 /arch/s390/kernel | |
| parent | s390/smp,ptdump: add absolute lowcore markers (diff) | |
| download | linux-dev-a0c0c44e9aa2b5da876467083c359b368f3ce95e.tar.xz linux-dev-a0c0c44e9aa2b5da876467083c359b368f3ce95e.zip | |
s390: add ELF note type for encrypted CPU state of a PV VCPU
The type NT_S390_PV_CPU_DATA note contains the encrypted CPU state of
a PV VCPU. It's only relevant in dumps of s390 PV VMs and can't be
decrypted without a second block of encrypted data which provides key
parts. Therefore we only reserve the note type here.
The zgetdump tool from the s390-tools package can, together with a
Customer Communication Key, be used to convert a PV VM dump into a
normal VM dump. zgetdump will decrypt the CPU data and overwrite the
other respective notes to make the data accessible for crash and other
debugging tools.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
[agordeev@linux.ibm.com changed desctiption]
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
0 files changed, 0 insertions, 0 deletions