KVM: x86: Clear pv_unhalted on all transitions to KVM_MP_STATE_RUNNABLE

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In kvm_set_mp_state(), ensure that vcpu->arch.pv.pv_unhalted is always
cleared on a transition to KVM_MP_STATE_RUNNABLE, so that the next HLT
instruction will be respected.

Fixes: 6aef266c6e ("kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks")
Fixes: b6b8a1451f ("KVM: nVMX: Rework interception of IRQs and NMIs")
Fixes: 38c0b192bd ("KVM: SVM: leave halted state on vmexit")
Fixes: 1a65105a5a ("KVM: x86/xen: handle PV spinlocks slowpath")
Signed-off-by: Jim Mattson <jmattson@google.com>
Link: https://lore.kernel.org/r/20250113200150.487409-3-jmattson@google.com
[sean: add Xen PV spinlocks to the list of Fixes, tweak changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Jim Mattson 2025-01-13 12:01:44 -08:00 • committed by Sean Christopherson

parent c9e5f3fa90

commit e9cb61055f

3 changed files with 2 additions and 2 deletions

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arch/x86/kvm/svm/sev.c

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arch/x86/kvm/x86.c

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arch/x86/kvm/x86.h

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