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| author | Kevin Wolf <kwolf@redhat.com> | 2012-02-08 14:34:38 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-08 14:10:26 +0200 |
| commit | 7f3d35fddd173e52886d03bc34b5b5d6f5bea343 (patch) | |
| tree | 9561913495a92c398b9b8e372d4e9a5c1d55c7f4 /arch/x86/include/asm/kvm_host.h | |
| parent | 9cc815e46911486f52bec60517d0f7b40d323bbc (diff) | |
| download | blackbird-op-linux-7f3d35fddd173e52886d03bc34b5b5d6f5bea343.tar.gz blackbird-op-linux-7f3d35fddd173e52886d03bc34b5b5d6f5bea343.zip | |
KVM: x86 emulator: Fix task switch privilege checks
Currently, all task switches check privileges against the DPL of the
TSS. This is only correct for jmp/call to a TSS. If a task gate is used,
the DPL of this take gate is used for the check instead. Exceptions,
external interrupts and iret shouldn't perform any check.
[avi: kill kvm-kmod remnants]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 74c9edf2bb18..e216ba066e79 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -768,8 +768,8 @@ int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu); void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg); -int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason, - bool has_error_code, u32 error_code); +int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index, + int reason, bool has_error_code, u32 error_code); int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); |
