KVM: task switch: translate guest segment limit to virt-extension byte granular field

If 'g' is one then limit is 4kb granular.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 27c6ece91da6..5916191420c7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3184,6 +3184,10 @@ static void seg_desct_to_kvm_desct(struct desc_struct *seg_desc, u16 selector,
         kvm_desct->base |= seg_desc->base2 << 24;
         kvm_desct->limit = seg_desc->limit0;
         kvm_desct->limit |= seg_desc->limit << 16;
+        if (seg_desc->g) {
+                kvm_desct->limit <<= 12;
+                kvm_desct->limit |= 0xfff;
+        }
         kvm_desct->selector = selector;
         kvm_desct->type = seg_desc->type;
         kvm_desct->present = seg_desc->p;