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From: "Naveen N Rao (AMD)" <naveen@kernel.org>
To: Sean Christopherson <seanjc@google.com>, Borislav Petkov <bp@alien8.de>
Cc: <kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Nikunj A Dadhania <nikunj@amd.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Neeraj Upadhyay <neeraj.upadhyay@amd.com>,
	Tianyu Lan <tiala@microsoft.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Thomas Gleixner <tglx@kernel.org>
Subject: [RFC PATCH v3 08/27] kvm: irqfd: Have kvm_arch_has_irq_bypass() take struct kvm pointer
Date: Wed,  8 Jul 2026 12:02:06 +0530	[thread overview]
Message-ID: <92937a19d41943a75d8fa1643f3a4c6b8d02cba9.1783490022.git.naveen@kernel.org> (raw)
In-Reply-To: <cover.1783490022.git.naveen@kernel.org>

In preparation for having kvm_arch_has_irq_bypass() take the guest
configuration into account, have the helper take struct kvm pointer as
an argument.

Signed-off-by: Naveen N Rao (AMD) <naveen@kernel.org>
---
 arch/arm64/include/asm/kvm_host.h | 2 +-
 arch/x86/include/asm/kvm_host.h   | 2 +-
 include/linux/kvm_host.h          | 2 +-
 arch/powerpc/kvm/powerpc.c        | 2 +-
 arch/x86/kvm/irq.c                | 2 +-
 arch/x86/kvm/vmx/posted_intr.c    | 2 +-
 virt/kvm/eventfd.c                | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index cb5ef7e6c2fe..1eee05003ea1 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1669,7 +1669,7 @@ void kvm_set_vm_id_reg(struct kvm *kvm, u32 reg, u64 val);
 #define kvm_has_sctlr2(k)				\
 	(kvm_has_feat((k), ID_AA64MMFR3_EL1, SCTLRX, IMP))
 
-static inline bool kvm_arch_has_irq_bypass(void)
+static inline bool kvm_arch_has_irq_bypass(struct kvm *kvm)
 {
 	return true;
 }
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index d8700eb848b4..d81179b43199 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -2064,7 +2064,7 @@ static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
 	kvm_x86_call(vcpu_unblocking)(vcpu);
 }
 
-static inline bool kvm_arch_has_irq_bypass(void)
+static inline bool kvm_arch_has_irq_bypass(struct kvm *kvm)
 {
 	return enable_device_posted_irqs;
 }
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ab8cfaec82d3..b3b80196f4dc 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -2421,7 +2421,7 @@ struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void);
 #if IS_ENABLED(CONFIG_HAVE_KVM_IRQ_BYPASS)
 struct kvm_kernel_irqfd;
 
-bool kvm_arch_has_irq_bypass(void);
+bool kvm_arch_has_irq_bypass(struct kvm *kvm);
 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *,
 			   struct irq_bypass_producer *);
 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 00302399fc37..f536813b1680 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -843,7 +843,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
  * irq_bypass_stop and irq_bypass_start are not needed and so
  * kvm_ops are not defined for them.
  */
-bool kvm_arch_has_irq_bypass(void)
+bool kvm_arch_has_irq_bypass(struct kvm *kvm)
 {
 	return ((kvmppc_hv_ops && kvmppc_hv_ops->irq_bypass_add_producer) ||
 		(kvmppc_pr_ops && kvmppc_pr_ops->irq_bypass_add_producer));
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index 727245a6ab34..dd776449731f 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -439,7 +439,7 @@ static int kvm_pi_update_irte(struct kvm_kernel_irqfd *irqfd,
 	struct kvm_lapic_irq irq;
 	int r;
 
-	if (WARN_ON_ONCE(!irqchip_in_kernel(kvm) || !kvm_arch_has_irq_bypass()))
+	if (WARN_ON_ONCE(!irqchip_in_kernel(kvm) || !kvm_arch_has_irq_bypass(kvm)))
 		return -EINVAL;
 
 	if (entry && entry->type == KVM_IRQ_ROUTING_MSI) {
diff --git a/arch/x86/kvm/vmx/posted_intr.c b/arch/x86/kvm/vmx/posted_intr.c
index 4a6d9a17da23..b0b0b1d5c2cb 100644
--- a/arch/x86/kvm/vmx/posted_intr.c
+++ b/arch/x86/kvm/vmx/posted_intr.c
@@ -151,7 +151,7 @@ static bool vmx_can_use_vtd_pi(struct kvm *kvm)
 	 * bypass IRQ being attached to the VM.  vmx_pi_start_bypass() ensures
 	 * blockng vCPUs will see an elevated count or get KVM_REQ_UNBLOCK.
 	 */
-	return irqchip_in_kernel(kvm) && kvm_arch_has_irq_bypass() &&
+	return irqchip_in_kernel(kvm) && kvm_arch_has_irq_bypass(kvm) &&
 	       READ_ONCE(kvm->arch.nr_possible_bypass_irqs);
 }
 
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 93ad2ebc963f..b170b37fdee2 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -488,7 +488,7 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
 		schedule_work(&irqfd->inject);
 
 #if IS_ENABLED(CONFIG_HAVE_KVM_IRQ_BYPASS)
-	if (kvm_arch_has_irq_bypass()) {
+	if (kvm_arch_has_irq_bypass(irqfd->kvm)) {
 		irqfd->consumer.add_producer = kvm_arch_irq_bypass_add_producer;
 		irqfd->consumer.del_producer = kvm_arch_irq_bypass_del_producer;
 		irqfd->consumer.stop = kvm_arch_irq_bypass_stop;
-- 
2.54.0


  parent reply	other threads:[~2026-07-08  6:35 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-08  6:31 [RFC PATCH v3 00/27] KVM: SVM: Add support for SEV-SNP Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:31 ` [RFC PATCH v3 01/27] x86/apic: Propagate APIC_SPIV writes to hv for " Naveen N Rao (AMD)
2026-07-10  2:03   ` Borislav Petkov
2026-07-10 15:02     ` Naveen N Rao
2026-07-11  4:37       ` Borislav Petkov
2026-07-13 17:38       ` Tom Lendacky
2026-07-14  8:57         ` Naveen N Rao
2026-07-08  6:32 ` [RFC PATCH v3 02/27] x86/apic: Drop savic_eoi() in favor of native_apic_msr_eoi() " Naveen N Rao (AMD)
2026-07-13 17:43   ` Tom Lendacky
2026-07-14  9:02     ` Naveen N Rao
2026-07-08  6:32 ` [RFC PATCH v3 03/27] x86/kvm: Disable PV_SEND_IPI if Secure AVIC is enabled Naveen N Rao (AMD)
2026-07-13 17:52   ` Tom Lendacky
2026-07-14  9:42     ` Naveen N Rao
2026-07-08  6:32 ` [RFC PATCH v3 04/27] x86/apic: Use AVIC_INCOMPLETE_IPI VMGEXIT for Secure AVIC IPI handling Naveen N Rao (AMD)
2026-07-13 17:59   ` Tom Lendacky
2026-07-14 10:03     ` Naveen N Rao
2026-07-08  6:32 ` [RFC PATCH v3 05/27] x86/cpufeatures: Add Secure AVIC CPU feature Naveen N Rao (AMD)
2026-07-13 18:32   ` Tom Lendacky
2026-07-08  6:32 ` [RFC PATCH v3 06/27] KVM: SVM: Add helper to check if Secure AVIC is enabled for a guest Naveen N Rao (AMD)
2026-07-13 18:35   ` Tom Lendacky
2026-07-08  6:32 ` [RFC PATCH v3 07/27] KVM: SVM: Set guest_apic_protected if Secure AVIC is enabled Naveen N Rao (AMD)
2026-07-08  6:32 ` Naveen N Rao (AMD) [this message]
2026-07-08  6:32 ` [RFC PATCH v3 09/27] KVM: SVM: Disable IRQ bypass for Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 10/27] KVM: SVM: Add avic_ipiv_is_soft_disabled() as a wrapper around enable_ipiv Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 11/27] KVM: SVM: Disable IPIv for Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 12/27] KVM: SVM: Short-circuit a few AVIC flows " Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 13/27] KVM: SVM: Warn if we ever receive AVIC_UNACCELERATED_ACCESS #VMEXIT Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 14/27] KVM: SVM: Do not inhibit AVIC for SEV-SNP guests if Secure AVIC is enabled Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 15/27] KVM: SVM: Set VGIF in VMSA area for Secure AVIC guests Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 16/27] KVM: SVM: Add handler for VMGEXIT Secure AVIC NAE event Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 17/27] KVM: SVM: Do not intercept SECURE_AVIC_CONTROL MSR for Secure AVIC guests Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 18/27] KVM: x86: Add a new kvm_x86_op protected_apic_has_injectable_intr() Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 19/27] KVM: SVM: Implement kvm_x86_ops->protected_apic_has_injectable_intr() for Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 20/27] KVM: SVM: Implement kvm_x86_ops->protected_apic_has_interrupt() " Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 21/27] KVM: SVM: Add interrupt delivery support for Secure AVIC guests Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 22/27] KVM: SVM: Add support for incomplete IPI handling for Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 23/27] KVM: SVM: Add support for injecting NMIs for Secure AVIC guests Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 24/27] KVM: SVM: Mandate use of split irqchip for Secure AVIC Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 25/27] KVM: SVM: Do not inject exceptions " Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 26/27] KVM: SVM: Do not intercept exceptions for Secure AVIC guests Naveen N Rao (AMD)
2026-07-08  6:32 ` [RFC PATCH v3 27/27] KVM: SVM: Advertise Secure AVIC support for SEV-SNP guests Naveen N Rao (AMD)
2026-07-08  9:20 ` [RFC PATCH v3 00/27] KVM: SVM: Add support for SEV-SNP Secure AVIC Naveen N Rao

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