kvm: x86: Read PDPTEs on CR0.CD and CR0.NW changes
authorJim Mattson <jmattson@google.com>
Tue, 7 Jul 2020 22:36:30 +0000 (15:36 -0700)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 8 Jul 2020 20:21:58 +0000 (16:21 -0400)
commitd42e3fae6faedacb2a7b4c984417ed0d9f540401
tree4570c63b593111376cbb3ea9e7e2b0cd48521c9f
parent9a3c05e658d4d31b38ef03fe5c17bc2039402ff7
kvm: x86: Read PDPTEs on CR0.CD and CR0.NW changes

According to the SDM, when PAE paging would be in use following a
MOV-to-CR0 that modifies any of CR0.CD, CR0.NW, or CR0.PG, then the
PDPTEs are loaded from the address in CR3. Previously, kvm only loaded
the PDPTEs when PAE paging would be in use following a MOV-to-CR0 that
modified CR0.PG.

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20200707223630.336700-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/x86.c