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author | Paolo Bonzini <pbonzini@redhat.com> | 2018-01-16 16:51:18 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 21:55:13 +0100 |
commit | 321fbb1fad297ccbac0efd28e58851a085ac29fa (patch) | |
tree | 2a45bc094770747950c2ce70fef663eae7b4e092 /arch/x86/mm | |
parent | 8f54df9756caed1d499bc8f412ab736a8928dc39 (diff) |
KVM: VMX: make MSR bitmaps per-VCPU
commit 904e14fb7cb96401a7dc803ca2863fd5ba32ffe6 upstream.
Place the MSR bitmap in struct loaded_vmcs, and update it in place
every time the x2apic or APICv state can change. This is rare and
the loop can handle 64 MSRs per iteration, in a similar fashion as
nested_vmx_prepare_msr_bitmap.
This prepares for choosing, on a per-VM basis, whether to intercept
the SPEC_CTRL and PRED_CMD MSRs.
Suggested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 4.4:
- APICv support looked different
- We still need to intercept the APIC_ID MSR
- Adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/mm')
0 files changed, 0 insertions, 0 deletions