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KVM: VMX: Move enable_ipiv knob to common x86

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Move enable_ipiv to common x86 so that it can be reused by SVM to control
IPI virtualization when AVIC is enabled.  SVM doesn't actually provide a
way to truly disable IPI virtualization, but KVM can get close enough by
skipping the necessary table programming.

Link: https://lore.kernel.org/r/20250611224604.313496-18-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson
2025-06-11 15:45:19 -07:00
parent d29433336a
commit bafddc7000
4 changed files with 4 additions and 3 deletions
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1
arch/x86/include/asm/kvm_host.h
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@@ -1951,6 +1951,7 @@ struct kvm_arch_async_pf {
extern u32 __read_mostly kvm_nr_uret_msrs;
extern bool __read_mostly allow_smaller_maxphyaddr;
extern bool __read_mostly enable_apicv;
extern bool __read_mostly enable_ipiv;
extern bool __read_mostly enable_device_posted_irqs;
extern struct kvm_x86_ops kvm_x86_ops;

1
arch/x86/kvm/vmx/capabilities.h
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@@ -15,7 +15,6 @@ extern bool __read_mostly enable_ept;
extern bool __read_mostly enable_unrestricted_guest;
extern bool __read_mostly enable_ept_ad_bits;
extern bool __read_mostly enable_pml;
extern bool __read_mostly enable_ipiv;
extern int __read_mostly pt_mode;
#define PT_MODE_SYSTEM 0

2
arch/x86/kvm/vmx/vmx.c
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@@ -113,8 +113,6 @@ static bool __read_mostly fasteoi = 1;
module_param(fasteoi, bool, 0444);
module_param(enable_apicv, bool, 0444);
bool __read_mostly enable_ipiv = true;
module_param(enable_ipiv, bool, 0444);
module_param(enable_device_posted_irqs, bool, 0444);

3
arch/x86/kvm/x86.c
View File

@@ -226,6 +226,9 @@ EXPORT_SYMBOL_GPL(allow_smaller_maxphyaddr);
bool __read_mostly enable_apicv = true;
EXPORT_SYMBOL_GPL(enable_apicv);
bool __read_mostly enable_ipiv = true;
EXPORT_SYMBOL_GPL(enable_ipiv);
bool __read_mostly enable_device_posted_irqs = true;
EXPORT_SYMBOL_GPL(enable_device_posted_irqs);