diff options
author | Avi Kivity <avi@redhat.com> | 2010-11-22 17:53:24 +0200 |
---|---|---|
committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:29:56 +0200 |
commit | db297e3d8ed8409b969512c3ecd9d13223f2981c (patch) | |
tree | f45bb722f80e0ffd78a665c5f4dd1d69bda319e5 /arch | |
parent | 42438e364cbc1e95cacb4ca92688d54a50cf5c4d (diff) |
KVM: x86 emulator: tighen up ->read_std() and ->write_std() error checks
Instead of checking for X86EMUL_PROPAGATE_FAULT, check for any error,
making the callers more reliable.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kvm/emulate.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 345aa4d3614..223c536b7f7 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1915,7 +1915,7 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt, ret = ops->read_std(old_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; @@ -1923,13 +1923,13 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt, ret = ops->write_std(old_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; ret = ops->read_std(new_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; @@ -1940,7 +1940,7 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt, &tss_seg.prev_task_link, sizeof tss_seg.prev_task_link, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; } @@ -2049,7 +2049,7 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt, ret = ops->read_std(old_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; @@ -2057,13 +2057,13 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt, ret = ops->write_std(old_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; ret = ops->read_std(new_tss_base, &tss_seg, sizeof tss_seg, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; @@ -2074,7 +2074,7 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt, &tss_seg.prev_task_link, sizeof tss_seg.prev_task_link, ctxt->vcpu, &ctxt->exception); - if (ret == X86EMUL_PROPAGATE_FAULT) + if (ret != X86EMUL_CONTINUE) /* FIXME: need to provide precise fault address */ return ret; } |