Re: [PATCH v3 33/62] KVM: Fold kvm_arch_irqfd_route_changed() into... | linux-arm-kernel

[PATCH v3 00/62] KVM: iommu: Overhaul device posted IRQs support · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 01/62] KVM: arm64: Explicitly treat routing entry type changes as changes · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 01/62] KVM: arm64: Explicitly treat routing entry type changes as changes · Oliver Upton <hidden> · 2025-06-13
Re: (subset) [PATCH v3 01/62] KVM: arm64: Explicitly treat routing entry type changes as changes · Marc Zyngier <maz@kernel.org> · 2025-06-19
[PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Marc Zyngier <maz@kernel.org> · 2025-06-12
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Sean Christopherson <seanjc@google.com> · 2025-06-12
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Oliver Upton <hidden> · 2025-06-13
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Sean Christopherson <seanjc@google.com> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · David Woodhouse <dwmw2@infradead.org> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Oliver Upton <hidden> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Sean Christopherson <seanjc@google.com> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Oliver Upton <hidden> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Sean Christopherson <seanjc@google.com> · 2025-06-20
Re: [PATCH v3 02/62] KVM: arm64: WARN if unmapping vLPI fails · Oliver Upton <hidden> · 2025-06-20
[PATCH v3 03/62] KVM: Pass new routing entries and irqfd when updating IRTEs · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 04/62] KVM: SVM: Track per-vCPU IRTEs using kvm_kernel_irqfd structure · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 05/62] KVM: SVM: Delete IRTE link from previous vCPU before setting new IRTE · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 06/62] iommu/amd: KVM: SVM: Delete now-unused cached/previous GA tag fields · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 07/62] KVM: SVM: Delete IRTE link from previous vCPU irrespective of new routing · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 08/62] KVM: SVM: Drop pointless masking of default APIC base when setting V_APIC_BAR · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 08/62] KVM: SVM: Drop pointless masking of default APIC base when setting V_APIC_BAR · Naveen N Rao <naveen@kernel.org> · 2025-06-13
[PATCH v3 09/62] KVM: SVM: Drop pointless masking of kernel page pa's with AVIC HPA masks · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 09/62] KVM: SVM: Drop pointless masking of kernel page pa's with AVIC HPA masks · Naveen N Rao <naveen@kernel.org> · 2025-06-13
[PATCH v3 10/62] KVM: SVM: Add helper to deduplicate code for getting AVIC backing page · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 10/62] KVM: SVM: Add helper to deduplicate code for getting AVIC backing page · Naveen N Rao <naveen@kernel.org> · 2025-06-13
[PATCH v3 11/62] KVM: SVM: Drop vcpu_svm's pointless avic_backing_page field · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 11/62] KVM: SVM: Drop vcpu_svm's pointless avic_backing_page field · Naveen N Rao <naveen@kernel.org> · 2025-06-13
[PATCH v3 12/62] KVM: SVM: Inhibit AVIC if ID is too big instead of rejecting vCPU creation · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 12/62] KVM: SVM: Inhibit AVIC if ID is too big instead of rejecting vCPU creation · Naveen N Rao <naveen@kernel.org> · 2025-06-17
Re: [PATCH v3 12/62] KVM: SVM: Inhibit AVIC if ID is too big instead of rejecting vCPU creation · Sean Christopherson <seanjc@google.com> · 2025-06-17
Re: [PATCH v3 12/62] KVM: SVM: Inhibit AVIC if ID is too big instead of rejecting vCPU creation · Naveen N Rao <hidden> · 2025-06-18
Re: [PATCH v3 12/62] KVM: SVM: Inhibit AVIC if ID is too big instead of rejecting vCPU creation · Sean Christopherson <seanjc@google.com> · 2025-06-18
[PATCH v3 13/62] KVM: SVM: Drop redundant check in AVIC code on ID during vCPU creation · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 13/62] KVM: SVM: Drop redundant check in AVIC code on ID during vCPU creation · Naveen N Rao <naveen@kernel.org> · 2025-06-17
Re: [PATCH v3 13/62] KVM: SVM: Drop redundant check in AVIC code on ID during vCPU creation · Sean Christopherson <seanjc@google.com> · 2025-06-17
Re: [PATCH v3 13/62] KVM: SVM: Drop redundant check in AVIC code on ID during vCPU creation · Naveen N Rao <hidden> · 2025-06-18
[PATCH v3 14/62] KVM: SVM: Track AVIC tables as natively sized pointers, not "struct pages" · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 14/62] KVM: SVM: Track AVIC tables as natively sized pointers, not "struct pages" · Naveen N Rao <naveen@kernel.org> · 2025-06-17
[PATCH v3 15/62] KVM: SVM: Drop superfluous "cache" of AVIC Physical ID entry pointer · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 15/62] KVM: SVM: Drop superfluous "cache" of AVIC Physical ID entry pointer · Naveen N Rao <naveen@kernel.org> · 2025-06-19
[PATCH v3 16/62] KVM: VMX: Move enable_ipiv knob to common x86 · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 17/62] KVM: SVM: Add enable_ipiv param, never set IsRunning if disabled · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 17/62] KVM: SVM: Add enable_ipiv param, never set IsRunning if disabled · Naveen N Rao <naveen@kernel.org> · 2025-06-19
Re: [PATCH v3 17/62] KVM: SVM: Add enable_ipiv param, never set IsRunning if disabled · Naveen N Rao <naveen@kernel.org> · 2025-06-19
Re: [PATCH v3 17/62] KVM: SVM: Add enable_ipiv param, never set IsRunning if disabled · Sean Christopherson <seanjc@google.com> · 2025-06-20
Re: [PATCH v3 17/62] KVM: SVM: Add enable_ipiv param, never set IsRunning if disabled · Naveen N Rao <naveen@kernel.org> · 2025-06-23
[PATCH v3 18/62] KVM: SVM: Disable (x2)AVIC IPI virtualization if CPU has erratum #1235 · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 18/62] KVM: SVM: Disable (x2)AVIC IPI virtualization if CPU has erratum #1235 · Naveen N Rao <naveen@kernel.org> · 2025-06-23
Re: [PATCH v3 18/62] KVM: SVM: Disable (x2)AVIC IPI virtualization if CPU has erratum #1235 · Sean Christopherson <seanjc@google.com> · 2025-06-23
[PATCH v3 19/62] KVM: VMX: Suppress PI notifications whenever the vCPU is put · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 20/62] KVM: SVM: Add a comment to explain why avic_vcpu_blocking() ignores IRQ blocking · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 20/62] KVM: SVM: Add a comment to explain why avic_vcpu_blocking() ignores IRQ blocking · Naveen N Rao <naveen@kernel.org> · 2025-06-23
Re: [PATCH v3 20/62] KVM: SVM: Add a comment to explain why avic_vcpu_blocking() ignores IRQ blocking · Sean Christopherson <seanjc@google.com> · 2025-06-23
Re: [PATCH v3 20/62] KVM: SVM: Add a comment to explain why avic_vcpu_blocking() ignores IRQ blocking · Naveen N Rao <naveen@kernel.org> · 2025-06-25
[PATCH v3 21/62] iommu/amd: KVM: SVM: Use pi_desc_addr to derive ga_root_ptr · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 22/62] iommu/amd: KVM: SVM: Pass NULL @vcpu_info to indicate "not guest mode" · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 23/62] KVM: SVM: Stop walking list of routing table entries when updating IRTE · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 24/62] KVM: VMX: Stop walking list of routing table entries when updating IRTE · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 25/62] KVM: SVM: Extract SVM specific code out of get_pi_vcpu_info() · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 26/62] KVM: x86: Move IRQ routing/delivery APIs from x86.c => irq.c · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 27/62] KVM: x86: Nullify irqfd->producer after updating IRTEs · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 28/62] KVM: x86: Dedup AVIC vs. PI code for identifying target vCPU · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 29/62] KVM: x86: Move posted interrupt tracepoint to common code · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 30/62] KVM: SVM: Clean up return handling in avic_pi_update_irte() · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 31/62] iommu: KVM: Split "struct vcpu_data" into separate AMD vs. Intel structs · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 32/62] KVM: Don't WARN if updating IRQ bypass route fails · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 33/62] KVM: Fold kvm_arch_irqfd_route_changed() into kvm_arch_update_irqfd_routing() · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 33/62] KVM: Fold kvm_arch_irqfd_route_changed() into kvm_arch_update_irqfd_routing() · Oliver Upton <hidden> · 2025-06-13
[PATCH v3 34/62] KVM: x86: Track irq_bypass_vcpu in common x86 code · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 35/62] KVM: x86: Skip IOMMU IRTE updates if there's no old or new vCPU being targeted · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 36/62] KVM: x86: Don't update IRTE entries when old and new routes were !MSI · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 37/62] KVM: SVM: Revert IRTE to legacy mode if IOMMU doesn't provide IR metadata · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU · Naveen N Rao <naveen@kernel.org> · 2025-06-17
Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU · Ankit Soni <hidden> · 2025-12-22
possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Paolo Bonzini <pbonzini@redhat.com> · 2025-12-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Sean Christopherson <seanjc@google.com> · 2025-12-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Paolo Bonzini <pbonzini@redhat.com> · 2025-12-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Sean Christopherson <seanjc@google.com> · 2025-12-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Ankit Soni <hidden> · 2025-12-23
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Thomas Gleixner <tglx@kernel.org> · 2026-01-08
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Thomas Gleixner <tglx@kernel.org> · 2026-01-08
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Paolo Bonzini <pbonzini@redhat.com> · 2026-01-21
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Paolo Bonzini <pbonzini@redhat.com> · 2026-01-21
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Marc Zyngier <maz@kernel.org> · 2026-01-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Thomas Gleixner <tglx@kernel.org> · 2026-01-22
Re: possible deadlock due to irq_set_thread_affinity() calling into the scheduler (was Re: [PATCH v3 38/62] KVM: SVM: Take and hold ir_list_lock across IRTE updates in IOMMU) · Paolo Bonzini <pbonzini@redhat.com> · 2026-01-24
[PATCH v3 39/62] iommu/amd: Document which IRTE fields amd_iommu_update_ga() can modify · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 40/62] iommu/amd: KVM: SVM: Infer IsRun from validity of pCPU destination · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 41/62] iommu/amd: Factor out helper for manipulating IRTE GA/CPU info · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 42/62] iommu/amd: KVM: SVM: Set pCPU info in IRTE when setting vCPU affinity · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 43/62] iommu/amd: KVM: SVM: Add IRTE metadata to affined vCPU's list if AVIC is inhibited · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 44/62] KVM: SVM: Don't check for assigned device(s) when updating affinity · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 45/62] KVM: SVM: Don't check for assigned device(s) when activating AVIC · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 46/62] KVM: SVM: WARN if (de)activating guest mode in IOMMU fails · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 47/62] KVM: SVM: Process all IRTEs on affinity change even if one update fails · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 48/62] KVM: SVM: WARN if updating IRTE GA fields in IOMMU fails · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 49/62] KVM: x86: Drop superfluous "has assigned device" check in kvm_pi_update_irte() · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 50/62] KVM: x86: WARN if IRQ bypass isn't supported in kvm_pi_update_irte() · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 51/62] KVM: x86: WARN if IRQ bypass routing is updated without in-kernel local APIC · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 52/62] KVM: SVM: WARN if ir_list is non-empty at vCPU free · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 53/62] KVM: x86: Decouple device assignment from IRQ bypass · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 54/62] KVM: VMX: WARN if VT-d Posted IRQs aren't possible when starting IRQ bypass · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 55/62] KVM: SVM: Use vcpu_idx, not vcpu_id, for GA log tag/metadata · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 56/62] iommu/amd: WARN if KVM calls GA IRTE helpers without virtual APIC support · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 57/62] KVM: SVM: Fold avic_set_pi_irte_mode() into its sole caller · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 58/62] KVM: SVM: Don't check vCPU's blocking status when toggling AVIC on/off · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 59/62] KVM: SVM: Consolidate IRTE update when toggling AVIC on/off · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 60/62] iommu/amd: KVM: SVM: Allow KVM to control need for GA log interrupts · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 61/62] KVM: SVM: Generate GA log IRQs only if the associated vCPUs is blocking · Sean Christopherson <seanjc@google.com> · 2025-06-11
[PATCH v3 62/62] KVM: x86: Rename kvm_set_msi_irq() => kvm_msi_to_lapic_irq() · Sean Christopherson <seanjc@google.com> · 2025-06-11
Re: [PATCH v3 00/62] KVM: iommu: Overhaul device posted IRQs support · Sean Christopherson <seanjc@google.com> · 2025-06-24

Re: [PATCH v3 33/62] KVM: Fold kvm_arch_irqfd_route_changed() into kvm_arch_update_irqfd_routing()

From: Oliver Upton <hidden>
Date: 2025-06-13 20:50:10
Also in: kvm, kvmarm, linux-iommu, lkml

On Wed, Jun 11, 2025 at 03:45:36PM -0700, Sean Christopherson wrote:

Fold kvm_arch_irqfd_route_changed() into kvm_arch_update_irqfd_routing().
Calling arch code to know whether or not to call arch code is absurd.

Signed-off-by: Sean Christopherson <seanjc@google.com>

Reviewed-by: Oliver Upton <redacted>

Thanks,
Oliver

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