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@@ -772,6 +772,15 @@ static void svm_get_segment(struct kvm_vcpu *vcpu,
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var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
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var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
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var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1;
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+
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+ /*
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+ * SVM always stores 0 for the 'G' bit in the CS selector in
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+ * the VMCB on a VMEXIT. This hurts cross-vendor migration:
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+ * Intel's VMENTRY has a check on the 'G' bit.
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+ */
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+ if (seg == VCPU_SREG_CS)
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+ var->g = s->limit > 0xfffff;
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+
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var->unusable = !var->present;
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}
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