Overhaul and cleanup APIC virtualization (Posted Interrupts on Intel VMX,
AVIC on AMD SVM) to streamline things as much as possible, remove a bunch
of cruft, and document the lurking gotchas along the way.
Patch 01 is a fix from Paolo that's already been merged but hasn't made
its way to kvm/queue. It's included here to avoid a number of conflicts.
Based on kvm/queue, commit 1cf84614b04a ("KVM: x86: Exit to ...")
v3:
- Rebase to kvm/queue (and drop non-x86 patches as they've been queued).
- Redo AVIC patches, sadly the vcpu_(un)blocking() hooks need to stay.
- Add a patch to fix a missing (docuentation-only) barrier in nested
posted interrupt delivery. [Paolo]
- Collect reviews.
v2:
- https://lore.kernel.org/all/20211009021236.4122790-1-seanjc@xxxxxxxxxx/
- Collect reviews. [Christian, David]
- Add patch to move arm64 WFI functionality out of hooks. [Marc]
- Add RISC-V to the fun.
- Add all the APICv fun.
v1: https://lkml.kernel.org/r/20210925005528.1145584-1-seanjc@xxxxxxxxxx
Paolo Bonzini (1):
KVM: fix avic_set_running for preemptable kernels
Sean Christopherson (25):
KVM: nVMX: Ensure vCPU honors event request if posting nested IRQ
fails
KVM: VMX: Clean up PI pre/post-block WARNs
KVM: VMX: Handle PI wakeup shenanigans during vcpu_put/load
KVM: Drop unused kvm_vcpu.pre_pcpu field
KVM: Move x86 VMX's posted interrupt list_head to vcpu_vmx
KVM: VMX: Move preemption timer <=> hrtimer dance to common x86
KVM: x86: Unexport LAPIC's switch_to_{hv,sw}_timer() helpers
KVM: x86: Remove defunct pre_block/post_block kvm_x86_ops hooks
KVM: SVM: Signal AVIC doorbell iff vCPU is in guest mode
KVM: SVM: Don't bother checking for "running" AVIC when kicking for
IPIs
KVM: SVM: Remove unnecessary APICv/AVIC update in vCPU unblocking path
KVM: SVM: Use kvm_vcpu_is_blocking() in AVIC load to handle preemption
KVM: SVM: Skip AVIC and IRTE updates when loading blocking vCPU
iommu/amd: KVM: SVM: Use pCPU to infer IsRun state for IRTE
KVM: VMX: Don't do full kick when triggering posted interrupt "fails"
KVM: VMX: Wake vCPU when delivering posted IRQ even if vCPU == this
vCPU
KVM: VMX: Pass desired vector instead of bool for triggering posted
IRQ
KVM: VMX: Fold fallback path into triggering posted IRQ helper
KVM: VMX: Don't do full kick when handling posted interrupt wakeup
KVM: SVM: Drop AVIC's intermediate avic_set_running() helper
KVM: SVM: Move svm_hardware_setup() and its helpers below svm_x86_ops
KVM: SVM: Nullify vcpu_(un)blocking() hooks if AVIC is disabled
KVM: x86: Skip APICv update if APICv is disable at the module level
KVM: x86: Drop NULL check on kvm_x86_ops.check_apicv_inhibit_reasons
KVM: x86: Unexport __kvm_request_apicv_update()
arch/x86/include/asm/kvm-x86-ops.h | 2 -
arch/x86/include/asm/kvm_host.h | 12 -
arch/x86/kvm/hyperv.c | 3 +
arch/x86/kvm/lapic.c | 2 -
arch/x86/kvm/svm/avic.c | 116 ++++---
arch/x86/kvm/svm/svm.c | 479 ++++++++++++++---------------
arch/x86/kvm/svm/svm.h | 16 +-
arch/x86/kvm/vmx/posted_intr.c | 234 +++++++-------
arch/x86/kvm/vmx/posted_intr.h | 8 +-
arch/x86/kvm/vmx/vmx.c | 66 ++--
arch/x86/kvm/vmx/vmx.h | 3 +
arch/x86/kvm/x86.c | 41 ++-
drivers/iommu/amd/iommu.c | 6 +-
include/linux/amd-iommu.h | 6 +-
include/linux/kvm_host.h | 3 -
virt/kvm/kvm_main.c | 3 -
16 files changed, 510 insertions(+), 490 deletions(-)
--
2.34.1.400.ga245620fadb-goog
