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KVM: nVMX: Flush linear and combined mappings on VPID02 related flushes
authorLiran Alon <liran.alon@oracle.com>
Mon, 8 Oct 2018 20:42:19 +0000 (23:42 +0300)
committerPaolo Bonzini <pbonzini@redhat.com>
Sat, 13 Oct 2018 10:00:54 +0000 (12:00 +0200)
commit327c072187f7af4e4a371b635099f615c14082a7
treed80c3a93d33c4f378634c2e698551ec18163dc9e
parent3d5bdae8b16418781ec2c34a024aceee66267322
KVM: nVMX: Flush linear and combined mappings on VPID02 related flushes

All VPID12s used on a given L1 vCPU is translated to a single
VPID02 (vmx->nested.vpid02 or vmx->vpid). Therefore, on L1->L2 VMEntry,
we need to invalidate linear and combined mappings tagged by
VPID02 in case L1 uses VPID and vmcs12->vpid was changed since
last L1->L2 VMEntry.

However, current code invalidates the wrong mappings as it calls
__vmx_flush_tlb() with invalidate_gpa parameter set to true which will
result in invalidating combined and guest-physical mappings tagged with
active EPTP which is EPTP01.

Similarly, INVVPID emulation have the exact same issue.

Fix both issues by just setting invalidate_gpa parameter to false which
will result in invalidating linear and combined mappings tagged with
given VPID02 as required.

Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/vmx.c