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| author |   Sean Christopherson <seanjc@google.com> | 2021-04-23 15:34:04 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-04-26 05:26:13 -0400 |
| commit | 844d69c26d836fde97bf6f38a0a69da9fa42e985 (patch) | |
| tree | e4244ad1b8062b3d21afd2337582a3618f54ac3b /include/linux/string_helpers.h | |
| parent | KVM: SVM: Clear MSR_TSC_AUX[63:32] on write (diff) | |
| download | wireguard-linux-844d69c26d836fde97bf6f38a0a69da9fa42e985.tar.xz wireguard-linux-844d69c26d836fde97bf6f38a0a69da9fa42e985.zip | |
KVM: SVM: Delay restoration of host MSR_TSC_AUX until return to userspace
Use KVM's "user return MSRs" framework to defer restoring the host's
MSR_TSC_AUX until the CPU returns to userspace. Add/improve comments to
clarify why MSR_TSC_AUX is intercepted on both RDMSR and WRMSR, and why
it's safe for KVM to keep the guest's value loaded even if KVM is
scheduled out.
Cc: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210423223404.3860547-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/string_helpers.h')
0 files changed, 0 insertions, 0 deletions