diff options
| author | Ashish Kalra <[email protected]> | 2021-08-24 11:07:07 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-11-11 07:37:36 -0500 |
| commit | f4495615d76cfe5a633b0886b5c30310ed94c357 (patch) | |
| tree | 725ee991b1464fe1820a01bab53032d156a4d72f /tools/perf/util/trace-event-scripting.c | |
| parent | 2f70ddb1f71814aae525c58086fcb2f6974e6591 (diff) | |
x86/kvm: Add guest support for detecting and enabling SEV Live Migration feature.
The guest support for detecting and enabling SEV Live migration
feature uses the following logic :
- kvm_init_plaform() checks if its booted under the EFI
- If not EFI,
i) if kvm_para_has_feature(KVM_FEATURE_MIGRATION_CONTROL), issue a wrmsrl()
to enable the SEV live migration support
- If EFI,
i) If kvm_para_has_feature(KVM_FEATURE_MIGRATION_CONTROL), read
the UEFI variable which indicates OVMF support for live migration
ii) the variable indicates live migration is supported, issue a wrmsrl() to
enable the SEV live migration support
The EFI live migration check is done using a late_initcall() callback.
Also, ensure that _bss_decrypted section is marked as decrypted in the
hypervisor's guest page encryption status tracking.
Signed-off-by: Ashish Kalra <[email protected]>
Reviewed-by: Steve Rutherford <[email protected]>
Message-Id: <b4453e4c87103ebef12217d2505ea99a1c3e0f0f.1629726117.git.ashish.kalra@amd.com>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions