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Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pend
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack |
Date: |
Wed, 25 Nov 2015 17:52:24 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 25/11/2015 16:20, Andrey Smetanin wrote:
> +static void synic_clear_sint_msg_pending(struct kvm_vcpu_hv_synic *synic,
> + u32 sint)
> +{
> + struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
> + struct page *page;
> + gpa_t gpa;
> + struct hv_message *msg;
> + struct hv_message_page *msg_page;
> +
> + gpa = synic->msg_page & PAGE_MASK;
> + page = kvm_vcpu_gfn_to_page(vcpu, gpa >> PAGE_SHIFT);
> + if (is_error_page(page)) {
> + vcpu_err(vcpu, "Hyper-V SynIC can't get msg page, gpa 0x%llx\n",
> + gpa);
> + return;
> + }
> + msg_page = kmap_atomic(page);
But the message page is not being pinned, is it?
Paolo
> + msg = &msg_page->sint_message[sint];
> + msg->header.message_flags.msg_pending = 0;
> +
> + kunmap_atomic(msg_page);
> + kvm_release_page_dirty(page);
> + kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
> +}
> +
- [Qemu-devel] [PATCH v1 0/7] KVM: Hyper-V SynIC timers, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 1/7] drivers/hv: Move HV_SYNIC_STIMER_COUNT into Hyper-V UAPI x86 header, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 3/7] kvm/x86: Rearrange func's declarations inside Hyper-V header, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 4/7] kvm/x86: Added Hyper-V vcpu_to_hv_vcpu()/hv_vcpu_to_vcpu() helpers, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 2/7] drivers/hv: Move struct hv_message into UAPI Hyper-V x86 header, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 5/7] kvm/x86: Hyper-V internal helper to read MSR HV_X64_MSR_TIME_REF_COUNT, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 7/7] kvm/x86: Hyper-V SynIC timers, Andrey Smetanin, 2015/11/25
- [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Andrey Smetanin, 2015/11/25
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Andrey Smetanin, 2015/11/25
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Paolo Bonzini, 2015/11/25
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Andrey Smetanin, 2015/11/26
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Paolo Bonzini, 2015/11/26
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Andrey Smetanin, 2015/11/26
- Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Paolo Bonzini, 2015/11/26
Re: [Qemu-devel] [PATCH v1 6/7] kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack, Roman Kagan, 2015/11/27
Re: [Qemu-devel] [PATCH v1 0/7] KVM: Hyper-V SynIC timers, Wanpeng Li, 2015/11/26