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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-08-22 10:49:24 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-08-22 10:49:24 +0200 |
| commit | 7fb5c6b9ef22915e3fcac95cd44857f4457ba783 (patch) | |
| tree | c7db5d5e3bc70e6ba014da6f5909bc047b1df518 /xen/arch/x86/hvm | |
| parent | c9c6abab583d27fdca1d979a7f1d18ae30f54e9b (diff) | |
| download | xen-7fb5c6b9ef22915e3fcac95cd44857f4457ba783.tar.gz xen-7fb5c6b9ef22915e3fcac95cd44857f4457ba783.tar.bz2 xen-7fb5c6b9ef22915e3fcac95cd44857f4457ba783.zip | |
Nested VMX: Check whether interrupt is blocked by TPR
If interrupt is blocked by L1's TPR, L2 should not see it and keep
running. Adding the check before L2 to retrive interrupt.
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: "Dong, Eddie" <eddie.dong@intel.com>
Diffstat (limited to 'xen/arch/x86/hvm')
| -rw-r--r-- | xen/arch/x86/hvm/vmx/intr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/xen/arch/x86/hvm/vmx/intr.c b/xen/arch/x86/hvm/vmx/intr.c index e376f3c4ee..cab91094f4 100644 --- a/xen/arch/x86/hvm/vmx/intr.c +++ b/xen/arch/x86/hvm/vmx/intr.c @@ -165,6 +165,11 @@ static int nvmx_intr_intercept(struct vcpu *v, struct hvm_intack intack) { u32 ctrl; + /* If blocked by L1's tpr, then nothing to do. */ + if ( nestedhvm_vcpu_in_guestmode(v) && + hvm_interrupt_blocked(v, intack) == hvm_intblk_tpr ) + return 1; + if ( nvmx_intr_blocked(v) != hvm_intblk_none ) { enable_intr_window(v, intack); |