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| author | Mingwei Zhang <mizhang@google.com> | 2023-05-09 06:23:48 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-05-21 11:05:51 +0300 |
| commit | b9846a698c9aff4eb2214a06ac83638ad098f33f (patch) | |
| tree | 44e609f3ef25d9456391cbea343b67ac83a22bab /virt/kvm | |
| parent | 275a87244ec8320e5d319132caa787329b04bb7e (diff) | |
| download | linux-b9846a698c9aff4eb2214a06ac83638ad098f33f.tar.xz | |
KVM: VMX: add MSR_IA32_TSX_CTRL into msrs_to_save
Add MSR_IA32_TSX_CTRL into msrs_to_save[] to explicitly tell userspace to
save/restore the register value during migration. Missing this may cause
userspace that relies on KVM ioctl(KVM_GET_MSR_INDEX_LIST) fail to port the
value to the target VM.
In addition, there is no need to add MSR_IA32_TSX_CTRL when
ARCH_CAP_TSX_CTRL_MSR is not supported in kvm_get_arch_capabilities(). So
add the checking in kvm_probe_msr_to_save().
Fixes: c11f83e0626b ("KVM: vmx: implement MSR_IA32_TSX_CTRL disable RTM functionality")
Reported-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20230509032348.1153070-1-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions