From patchwork Tue May 25 13:41:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcelo Tosatti X-Patchwork-Id: 12279069 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38CC2C2B9F8 for ; Tue, 25 May 2021 13:54:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E55B610CE for ; Tue, 25 May 2021 13:54:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233418AbhEYN4A (ORCPT ); Tue, 25 May 2021 09:56:00 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:21578 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233435AbhEYNzs (ORCPT ); Tue, 25 May 2021 09:55:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621950858; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc; bh=/IYEcYC52GXj+7gmYdt33V4lbsYB9gOYvtVhg/ECBBY=; b=JXOypfOVgUeppDpAwdtNUrjJXIjm1q+LyrTtfrHT0WyFMZJ0aAz8MvN8D1tkLtqVY8ki4q 1+z3dltUDuUYlVFzjfVGpBuOK6gxv/QHZp1RPdkZT2l25TR8shs+xZZjCNNz3eN0fUta+E MfuYmDu4Cmj0qRGWXXFUUX/6IuYWpBc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-267-3EphxQC_PCGWT_mMvQw8hw-1; Tue, 25 May 2021 09:54:15 -0400 X-MC-Unique: 3EphxQC_PCGWT_mMvQw8hw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 567B7107ACF2; Tue, 25 May 2021 13:54:14 +0000 (UTC) Received: from fuller.cnet (ovpn-112-2.gru2.redhat.com [10.97.112.2]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2B9E05D9C0; Tue, 25 May 2021 13:54:07 +0000 (UTC) Received: by fuller.cnet (Postfix, from userid 1000) id AE8FE4172ED4; Tue, 25 May 2021 10:44:35 -0300 (-03) Message-ID: <20210525134115.135966361@redhat.com> User-Agent: quilt/0.66 Date: Tue, 25 May 2021 10:41:15 -0300 From: Marcelo Tosatti To: kvm@vger.kernel.org Cc: Paolo Bonzini , Alex Williamson , Sean Christopherson , Peter Xu Subject: [patch 0/3] VMX: configure posted interrupt descriptor when assigning device (v5) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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).