On Sun, Mar 14, 2010 at 10:22:52AM +0200, Avi Kivity wrote: > Direct maps are linear translations for a section of memory, used for > real mode or with large pages. As such, they are independent of the guest > levels. > > Teach the mmu about this by making page->role.glevels = 0 for direct maps. > This allows direct maps to be shared among real mode and the various paging > modes. > > Signed-off-by: Avi Kivity <[email protected]> > --- > arch/x86/kvm/mmu.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c > index b137515..a984bc1 100644 > --- a/arch/x86/kvm/mmu.c > +++ b/arch/x86/kvm/mmu.c > @@ -1328,6 +1328,8 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct > kvm_vcpu *vcpu, > role = vcpu->arch.mmu.base_role; > role.level = level; > role.direct = direct; > + if (role.direct) > + role.glevels = 0; > role.access = access; > if (vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) { > quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level)); > -- > 1.7.0.2
Isnt this what happens already, since for tdp base_role.glevels is not initialized? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
