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);
> +}
> +
