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...on" and "virtual-interrupt deliver" VM-execution control has no effect on the behavior of RDMSR/WRMSR if the "virtualize x2APIC mode" VM-execution control is 0. When guest uses x2APIC mode, we should enable "virtualize x2APIC mode" for APICV first. Signed-off-by: Jiongxi Li <jiongxi.li@intel.com> diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c index de22e03..4807eb2 100644 --- a/xen/arch/x86/hvm/vmx/vmcs.c +++ b/xen/arch/x86/hvm/vmx/vmcs.c @@ -190,7 +190,8 @@ static int vmx_init_vmcs_config(void) */ if ( _vmx_cpu_bas...

SVI should be restored in case guest is processing virtual interrupt while saveing a domain state. Otherwise SVI would be missed when virtual interrupt delivery is enabled. Signed-off-by: Jiongxi Li <jiongxi.li@intel.com> diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c index ee2294c..38ff216 100644 --- a/xen/arch/x86/hvm/vlapic.c +++ b/xen/arch/x86/hvm/vlapic.c @@ -1198,6 +1198,9 @@ static int lapic_load_regs(struct domain *d, hvm_domain_context_t *h) if ( hvm...

...he approach here is to manipulate EOI exit bitmap based on value of TMR. Level triggered irq requires a hook in vLAPIC EOI write, so that vIOAPIC EOI is triggered and emulated Signed-off-by: Gang Wei <gang.wei@intel.com> Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Signed-off-by: Jiongxi Li <jiongxi.li@intel.com> diff -r 7c6844dd4a0d xen/arch/x86/hvm/vlapic.c --- a/xen/arch/x86/hvm/vlapic.c Tue Sep 11 15:34:36 2012 +0800 +++ b/xen/arch/x86/hvm/vlapic.c Fri Sep 14 09:16:35 2012 +0800 @@ -145,6 +145,9 @@ int vlapic_set_irq(struct vlapic *vlapic if ( trig ) vlapi...

The VMCS includes controls that enable the virtualization of interrupts and the Advanced Programmable Interrupt Controller (APIC). When these controls are used, the processor will emulate many accesses to the APIC, track the state of the virtual APIC, and deliver virtual interrupts - all in VMX non-root operation without a VM exit. You can refer to Chapter 29 of the latest SDM. This series of

This patchset fixes some APICV issues, including a potential issue while doing live migration and enabling APICV while guest is in X2APIC mode. PATCH 1/2: Xen: Fix live migration while enabling APICV. PATCH 2/2: Xen: Fix VMCS setting for x2APIC mode guest while enabling APICV.