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| author | Jim Mattson <jmattson@google.com> | 2017-03-16 23:53:59 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-03-23 21:02:06 +0300 |
| commit | fb6c8198431311027c3434d4e94ab8bc040f7aea (patch) | |
| tree | 24158162ec309947b0452170b391aff74ff0a12d /tools/perf/scripts/python/syscall-counts.py | |
| parent | c761159cf81b8641290f7559a8d8e30f6ab92669 (diff) | |
| download | linux-fb6c8198431311027c3434d4e94ab8bc040f7aea.tar.xz | |
kvm: vmx: Flush TLB when the APIC-access address changes
Quoting from the Intel SDM, volume 3, section 28.3.3.4: Guidelines for
Use of the INVEPT Instruction:
If EPT was in use on a logical processor at one time with EPTP X, it
is recommended that software use the INVEPT instruction with the
"single-context" INVEPT type and with EPTP X in the INVEPT descriptor
before a VM entry on the same logical processor that enables EPT with
EPTP X and either (a) the "virtualize APIC accesses" VM-execution
control was changed from 0 to 1; or (b) the value of the APIC-access
address was changed.
In the nested case, the burden falls on L1, unless L0 enables EPT in
vmcs02 when L1 doesn't enable EPT in vmcs12.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions