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From: Marcelo Tosatti <mtosatti@redhat.com>
To: kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Peter Xu <peterx@redhat.com>
Subject: [patch 0/3] VMX: configure posted interrupt descriptor when assigning device (v5)
Date: Tue, 25 May 2021 10:41:15 -0300	[thread overview]
Message-ID: <20210525134115.135966361@redhat.com> (raw)

Configuration of the posted interrupt descriptor is incorrect when devices
are hotplugged to the guest (and vcpus are halted).

See patch 3 for details.

---

v5: use KVM_REQ_UNBLOCK instead of kvm_check_block callback (Paolo / Peter Xu)

v4: remove NULL assignments from kvm_x86_ops (Peter Xu)
    check for return value of ->start_assignment directly (Peter Xu)

v3: improved comments (Sean)
    use kvm_vcpu_wake_up (Sean)
    drop device_count from start_assignment function (Peter Xu)

v2: rather than using a potentially racy IPI (vs vcpu->cpu switches),
    kick the vcpus when assigning a device and let the blocked per-CPU
    list manipulation happen locally at ->pre_block and ->post_block
    (Sean Christopherson).




             reply	other threads:[~2021-05-25 13:54 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-25 13:41 Marcelo Tosatti [this message]
2021-05-25 13:41 ` [patch 1/3] KVM: x86: add start_assignment hook to kvm_x86_ops Marcelo Tosatti
2021-05-25 19:52   ` Peter Xu
2021-05-25 13:41 ` [patch 2/3] KVM: rename KVM_REQ_PENDING_TIMER to KVM_REQ_UNBLOCK Marcelo Tosatti
2021-05-25 19:14   ` Peter Xu
2021-05-25 19:26     ` Marcelo Tosatti
2021-05-25 19:52       ` Peter Xu
2021-05-27 11:57         ` Paolo Bonzini
2021-05-27 11:57   ` Paolo Bonzini
2021-05-25 13:41 ` [patch 3/3] KVM: VMX: update vcpu posted-interrupt descriptor when assigning device Marcelo Tosatti
2021-05-25 19:55   ` Peter Xu
2021-05-26 17:20     ` [patch 3/3 V2] " Marcelo Tosatti
2021-05-25 21:09   ` [patch 3/3] " kernel test robot
2021-05-25 21:09     ` kernel test robot
2021-05-27 11:59 ` [patch 0/3] VMX: configure posted interrupt descriptor when assigning device (v5) Paolo Bonzini

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