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KVM: vmx: disable posted interrupts if no local APIC

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Uniprocessor 32-bit randconfigs can disable the local APIC, and posted
interrupts require reserving a vector on the LAPIC, so they are
incompatible.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2015-09-28 11:58:14 +02:00
parent 9eec50b8bb
commit d6a858d13e
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kvm/vmx.c
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@@ -983,7 +983,8 @@ static inline bool cpu_has_vmx_virtual_intr_delivery(void)
static inline bool cpu_has_vmx_posted_intr(void) static inline bool cpu_has_vmx_posted_intr(void)
{ {
return vmcs_config.pin_based_exec_ctrl & PIN_BASED_POSTED_INTR; return IS_ENABLED(CONFIG_X86_LOCAL_APIC) &&
vmcs_config.pin_based_exec_ctrl & PIN_BASED_POSTED_INTR;
} }
static inline bool cpu_has_vmx_apicv(void) static inline bool cpu_has_vmx_apicv(void)