Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp1251603pxu; Fri, 27 Nov 2020 03:23:06 -0800 (PST) X-Google-Smtp-Source: ABdhPJxpXEf8jApTyG39xs9xOjRcNSsx0LwqKMZWj2MxDp6nGOj530IET8il1M8I8we+tLXBUALC X-Received: by 2002:a17:906:a856:: with SMTP id dx22mr7319100ejb.158.1606476186563; Fri, 27 Nov 2020 03:23:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606476186; cv=none; d=google.com; s=arc-20160816; b=FnpvVOlccFcSdzoETtk8cBLognX+x+ktWPZCsPY4qP71r/9cehXhoyPBRIuw/5erwj TxRMjclbd9pkhR056+gQqmcE6CQ4TU5e8BoH/2aOiNowbHo0cZm6tL+ZOAS/gHKh0sCn Zofu2YH/ssC+Dc1w+MCExq/rA6ZcMkgLKm5p6GpNSUway1IhIjteLLUZ+2QTJAX2VmAt imwB45P6NrWITydS+bgIxbYOuf/t0st7g6LxvEvMHfDyGbE0pEmUBqcwXamhRSqhTU9A rdAAPrgucTvmBnAdOrpMkU6FcvgRk3SWlYsIrOX2eALOhn5BmPgemJvsOS1tbY/03xho dOmw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=TFopWmrISNwds4exxKn1UKy4OMpKOwgTBLOgK+CrW5U=; b=u+paZ6D7SJ98IeLQpaiQqZE3RO3Er+6zC2eb51tjz4TlTaPnvxA0gAEnXEiPNyU71n NKFl+2WT8z9h1Ezvc7rv+wTED4AXNq4HcFfEINw+DNCMOVPJhKIovgdB8f0C0ewnJcC4 zFYDcFtIoi9JmT4k8Bjrimxh8v2LcGCAGjf+xQMqDxUYxZ0Z8ksN93hjB/5lV+lLksGl W0ycHMRLI6QGh2zo8Q25jXZXk7+C9dv95BqDMMnMatOJfJauk8+aTnFAsVNcOagWzk2l lsIndjUtzTCrZDH2rEUSTzO9dTxrhu4TGXlOA8rgnZeCBIa+2fezqcMDy029/84k63uy xI2A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=VGVqNwiM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h17si4079422ejg.46.2020.11.27.03.22.43; Fri, 27 Nov 2020 03:23:06 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=VGVqNwiM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727350AbgK0LVT (ORCPT + 99 others); Fri, 27 Nov 2020 06:21:19 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:42161 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725889AbgK0LVT (ORCPT ); Fri, 27 Nov 2020 06:21:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1606476078; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=TFopWmrISNwds4exxKn1UKy4OMpKOwgTBLOgK+CrW5U=; b=VGVqNwiMcuUExXyjqcXU9c30q2JfUfhSWJ68ZHg+SVSq66vviyuADi/A+G9swAnfHQ4Xpl PK4KcaOYaEWfXJ0T2EMHy3ROQmlX8nZ9nfiaYs6xRuuhWSG5oVAaeSDcwpzo+KogpDOdx/ DGYCvyVLToLDZK+Vbl+TGRrvK3q0RVE= 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-517-c1VOEJhHMfGykp8joBBrvw-1; Fri, 27 Nov 2020 06:21:16 -0500 X-MC-Unique: c1VOEJhHMfGykp8joBBrvw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1408F1006C96; Fri, 27 Nov 2020 11:21:15 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8D09C5D6D1; Fri, 27 Nov 2020 11:21:14 +0000 (UTC) From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: seanjc@google.com, Filippo Sironi Subject: [PATCH 0/2] KVM: x86: cleanup and fix userspace interrupt window Date: Fri, 27 Nov 2020 06:21:12 -0500 Message-Id: <20201127112114.3219360-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is my take on the split irqchip bug that David reported. It's a much more complicated patch, but I think it really gets to the bottom of the issue and the code is clearer. Paolo Paolo Bonzini (2): KVM: x86: handle !lapic_in_kernel case in kvm_cpu_*_extint KVM: x86: Fix split-irqchip vs interrupt injection window request arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/irq.c | 87 +++++++++++++-------------------- arch/x86/kvm/lapic.c | 2 +- arch/x86/kvm/x86.c | 17 +++---- 4 files changed, 44 insertions(+), 63 deletions(-) -- 2.28.0