On Fri, Jul 10, 2015 at 02:01:33PM +0200, Paolo Bonzini wrote: > We can disable CD unconditionally when there is no assigned device. > KVM now forces guest PAT to all-writeback in that case, so it makes > sense to also force CR0.CD=0. > > When there are assigned devices, emulate cache-disabled operation > through the page tables. This behavior is consistent with VMX, > where CD/NW are not touched by vmentry/vmexit. > > Note that buggy firmware that does not clear CD/NW is _seriously_ > old: SeaBIOS for example has been doing it since October 2008. > > Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- > arch/x86/kvm/svm.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) Looks good to me. Reviewed-by: Joerg Roedel <jroedel@xxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
