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Message-ID: <20250401161804.842968-1-seanjc@google.com>
Date: Tue, 1 Apr 2025 09:18:01 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Yosry Ahmed <yosry.ahmed@...ux.dev>, Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v3 0/3] KVM: x86: Add a module param for device posted IRQs
Add a module param, enable_device_posted_irqs, to control and enumerate
KVM support for device posted IRQs.
v3:
- Put the module param in vendor code to avoid issue with reloading vendor
modules, and to match enable_apicv (and enable_ipiv in the future).
- Fix a shortlog typo. [Jim]
v2:
- https://lore.kernel.org/all/20250320142022.766201-1-seanjc@google.com
- Add prep patches to use kvm_arch_has_irq_bypass() in vendor code when
querying support IRQ bypass, a.k.a. device posted IRQs, so as not to
unexpectedly introduce a (desired) dependency on enable_apicv. [Yosry]
- Use "&=" when constraining enable_device_posted_irqs based on APICv
and IOMMU posting support. [Yosry]
v1: https://lore.kernel.org/all/20250315025615.2367411-1-seanjc@google.com
Sean Christopherson (3):
KVM: VMX: Don't send UNBLOCK when starting device assignment without
APICv
KVM: SVM: Don't update IRTEs if APICv/AVIC is disabled
KVM: x86: Add module param to control and enumerate device posted IRQs
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/avic.c | 3 +--
arch/x86/kvm/svm/svm.c | 2 ++
arch/x86/kvm/vmx/posted_intr.c | 7 +++----
arch/x86/kvm/vmx/vmx.c | 2 ++
arch/x86/kvm/x86.c | 9 ++++++++-
6 files changed, 17 insertions(+), 7 deletions(-)
base-commit: 782f9feaa9517caf33186dcdd6b50a8f770ed29b
--
2.49.0.472.ge94155a9ec-goog
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