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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 585C4C433EF for ; Sat, 9 Oct 2021 02:14:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4353160FD9 for ; Sat, 9 Oct 2021 02:14:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244485AbhJICQC (ORCPT ); Fri, 8 Oct 2021 22:16:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38376 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244364AbhJICPg (ORCPT ); Fri, 8 Oct 2021 22:15:36 -0400 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5975AC0617A4 for ; Fri, 8 Oct 2021 19:13:24 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id x16-20020a0cfe10000000b003834102a98cso3980935qvr.9 for ; Fri, 08 Oct 2021 19:13:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=reply-to:date:in-reply-to:message-id:mime-version:references :subject:from:to:cc; bh=w/H4oIWp6aPNo76SoohcXjeRifcTKNkaEcXswmTfvS8=; b=Awo1FqukPn/eCDkoZYrOLJ78QMIWErLo3T1JPAM+azHfyRwj0C0I0SMNEn5GIB2txU M8xcuGBE4Pj+vf0eSl8CB+c5E5sQbuIMe89aP9EQE621aganA5V6HDgjMAcaBpBwJFVX C3SGKwbSwf16LR8Vkae/cgYp5NG8CH1ijTNN50Rr4HoNERkD2EJxcY2vp85daVtbnuQv ioYQxPegF+Cfcf+3bUPz5AVa6rlii3Hi3Y38Qqp1tDmmH+PsFzX9zPNBKfVsQyV5sVUN 4rGOba9XFbRiNbe1iaNvpJun8hhwygJEEzJPw9IjWbImWyRqKAUCmWW3EdcHL3Zmyd05 +drw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:reply-to:date:in-reply-to:message-id :mime-version:references:subject:from:to:cc; bh=w/H4oIWp6aPNo76SoohcXjeRifcTKNkaEcXswmTfvS8=; b=ovovoS4+yw4bj+d4TtgyDSXDCgfJD+eXuv04O8F6L5LCXurx+8bKjISI2yav//r8sM kcy+AogOYPUGw6cvi97y9+oABkTjbDsjO01q44SQlp3oKkJzwbe7mGUNIi7u73ZUg2oC NiagdhbqV9p7ErvBqsTJ9wOwRq9xpO+JpPVhM05vZTTiL6r1v6pN3H2I7TNcq4QfSeIu R9HmlEITEJj5uEp7JyQ7PpBGtPkrRWSlkw/0zmf1BHLNmvsszFf4N+UEdT+zVyvcmWx/ Mix6JUgTlZd9+S5GWMi+HgTppLRUcH2BAXute5uyIrRe7ll69kGqLKANlyQ/PURREzFu /KaQ== X-Gm-Message-State: AOAM5317OcfG7PYu4IrO+twgFmLIgH5Kw1jT1YOGuUKU0V7hEwclqS/3 iXvGXgRsDzDSi8r0+UtSGOMP7k6giqE= X-Google-Smtp-Source: ABdhPJxfQ527bwjQfHI3Ui/hfU27INsXtrHgzCKRUD4Jie98v/tpcQf1vSHG80RTY51lGOqh4HTdLuZNSsA= X-Received: from seanjc798194.pdx.corp.google.com ([2620:15c:90:200:e39b:6333:b001:cb]) (user=seanjc job=sendgmr) by 2002:ac8:4b57:: with SMTP id e23mr1849346qts.328.1633745603486; Fri, 08 Oct 2021 19:13:23 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 8 Oct 2021 19:12:10 -0700 In-Reply-To: <20211009021236.4122790-1-seanjc@google.com> Message-Id: <20211009021236.4122790-18-seanjc@google.com> Mime-Version: 1.0 References: <20211009021236.4122790-1-seanjc@google.com> X-Mailer: git-send-email 2.33.0.882.g93a45727a2-goog Subject: [PATCH v2 17/43] KVM: x86: Directly block (instead of "halting") UNINITIALIZED vCPUs From: Sean Christopherson To: Marc Zyngier , Huacai Chen , Aleksandar Markovic , Paul Mackerras , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Paolo Bonzini Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Atish Patra , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, David Matlack , Oliver Upton , Jing Zhang Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Go directly to kvm_vcpu_block() when handling the case where userspace attempts to run an UNINITIALIZED vCPU. The vCPU is not halted, nor is it likely that halt-polling will be successful in this case. Reviewed-by: David Matlack Signed-off-by: Sean Christopherson --- arch/x86/kvm/x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e6c17bbed25c..cd51f100e906 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10133,7 +10133,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) r = -EINTR; goto out; } - kvm_vcpu_halt(vcpu); + kvm_vcpu_block(vcpu); if (kvm_apic_accept_events(vcpu) < 0) { r = 0; goto out; -- 2.33.0.882.g93a45727a2-goog