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| author | Manali Shukla <manali.shukla@amd.com> | 2023-07-17 04:19:03 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-08-17 11:36:24 -0700 |
| commit | f67063414c0e83bb4a9e12358cc179af53c2a8bb (patch) | |
| tree | 69e970ae7eff6ac7cc84a5efbe78d0f29eda966d /scripts/rustdoc_test_builder.rs | |
| parent | f3cebc75e7425d6949d726bb8e937095b0aef025 (diff) | |
KVM: SVM: correct the size of spec_ctrl field in VMCB save area
Correct the spec_ctrl field in the VMCB save area based on the AMD
Programmer's manual.
Originally, the spec_ctrl was listed as u32 with 4 bytes of reserved
area. The AMD Programmer's Manual now lists the spec_ctrl as 8 bytes
in VMCB save area.
The Public Processor Programming reference for Genoa, shows SPEC_CTRL
as 64b register, but the AMD Programmer's Manual lists SPEC_CTRL as
32b register. This discrepancy will be cleaned up in next revision of
the AMD Programmer's Manual.
Since remaining bits above bit 7 are reserved bits in SPEC_CTRL MSR
and thus, not being used, the spec_ctrl added as u32 in the VMCB save
area is currently not an issue.
Fixes: 3dd2775b74c9 ("KVM: SVM: Create a separate mapping for the SEV-ES save area")
Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Manali Shukla <manali.shukla@amd.com>
Link: https://lore.kernel.org/r/20230717041903.85480-1-manali.shukla@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'scripts/rustdoc_test_builder.rs')
0 files changed, 0 insertions, 0 deletions