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kvm: x86: Fix DPL write back of segment registers

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The DPL is stored in the flags and not in the selector. In fact, the RPL
may differ from the DPL at some point in time, and so we were corrupting
the guest state so far.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka 2010-12-27 15:56:44 +01:00 • committed by Marcelo Tosatti
parent 7cc2cc3e26
commit acaa75507b
1 changed files with 1 additions and 1 deletions
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2
target-i386/kvm.c
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@ -602,7 +602,7 @@ static void set_seg(struct kvm_segment *lhs, const SegmentCache *rhs)
lhs->limit = rhs->limit;
lhs->type = (flags >> DESC_TYPE_SHIFT) & 15;
lhs->present = (flags & DESC_P_MASK) != 0;
lhs->dpl = rhs->selector & 3;
lhs->dpl = (flags >> DESC_DPL_SHIFT) & 3;
lhs->db = (flags >> DESC_B_SHIFT) & 1;
lhs->s = (flags & DESC_S_MASK) != 0;
lhs->l = (flags >> DESC_L_SHIFT) & 1;