From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 90E2FC43460 for ; Mon, 10 May 2021 17:54:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E70B611F0 for ; Mon, 10 May 2021 17:54:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233265AbhEJRzr (ORCPT ); Mon, 10 May 2021 13:55:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:57656 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233263AbhEJRze (ORCPT ); Mon, 10 May 2021 13:55:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620669269; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=3szDupmhb5P3gzH2roiv5CqgjhCLQjU+Y1Q5biEIpRs=; b=JP0fRh0ls3hoUEDftKfxecYsf4u/0ySeiiNj47gJWDKtJbsuSXoS4ed5k3YPeYd7DvTFnS LpDNk/FXIx2wsH/ZkDv0lIN++J0xwSPbx9Yv/FMO9c/rHVaEZlcfdPOY6vLlIJ/ySWkBsu FuGSkR+y1kdzdActnBL4cMMiR0MKL1I= 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-376-iRbL6Cd1OAOhbzRvYYpeHA-1; Mon, 10 May 2021 13:54:28 -0400 X-MC-Unique: iRbL6Cd1OAOhbzRvYYpeHA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 41B9D6D254; Mon, 10 May 2021 17:54:27 +0000 (UTC) Received: from fuller.cnet (ovpn-112-8.gru2.redhat.com [10.97.112.8]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2F66360FC2; Mon, 10 May 2021 17:54:20 +0000 (UTC) Received: by fuller.cnet (Postfix, from userid 1000) id 7CAA3440187B; Mon, 10 May 2021 14:54:15 -0300 (-03) Message-ID: <20210510172817.964478800@redhat.com> User-Agent: quilt/0.66 Date: Mon, 10 May 2021 14:26:48 -0300 From: Marcelo Tosatti To: kvm@vger.kernel.org Cc: Paolo Bonzini , Alex Williamson , Sean Christopherson , Peter Xu , Marcelo Tosatti Subject: [patch 2/4] KVM: add arch specific vcpu_check_block callback References: <20210510172646.930550753@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add callback in kvm_vcpu_check_block, so that architectures can direct a vcpu to exit the vcpu block loop without requiring events that would unhalt it. Signed-off-by: Marcelo Tosatti Index: kvm/include/linux/kvm_host.h =================================================================== --- kvm.orig/include/linux/kvm_host.h +++ kvm/include/linux/kvm_host.h @@ -971,6 +971,13 @@ static inline int kvm_arch_flush_remote_ } #endif +#ifndef __KVM_HAVE_ARCH_VCPU_CHECK_BLOCK +static inline int kvm_arch_vcpu_check_block(struct kvm_vcpu *vcpu) +{ + return 0; +} +#endif + #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA void kvm_arch_register_noncoherent_dma(struct kvm *kvm); void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); Index: kvm/virt/kvm/kvm_main.c =================================================================== --- kvm.orig/virt/kvm/kvm_main.c +++ kvm/virt/kvm/kvm_main.c @@ -2794,6 +2794,8 @@ static int kvm_vcpu_check_block(struct k goto out; if (signal_pending(current)) goto out; + if (kvm_arch_vcpu_check_block(vcpu)) + goto out; ret = 0; out: