[patch 1/3] KVM: task switch: translate guest segment limit to virt-extension byte granular field

[Marcelo Tosatti]

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

Signed-off-by: Marcelo Tosatti <[EMAIL PROTECTED]>

Index: kvm-vmx-checks/arch/x86/kvm/x86.c
===================================================================
--- kvm-vmx-checks.orig/arch/x86/kvm/x86.c
+++ kvm-vmx-checks/arch/x86/kvm/x86.c
@@ -3195,6 +3195,10 @@ static void seg_desct_to_kvm_desct(struc
        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;
@@ -3222,8 +3226,12 @@ static void get_segment_descritptor_dtab
 
                if (kvm_seg.unusable)
                        dtable->limit = 0;
-               else
-                       dtable->limit = kvm_seg.limit;
+               else {
+                       if (kvm_seg.g)
+                               dtable->limit = kvm_seg.limit >> 12;
+                       else
+                               dtable->limit = kvm_seg.limit;
+               }
                dtable->base = kvm_seg.base;
        }
        else

-- 

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