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=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 BBC9EC3F2D1 for ; Thu, 5 Mar 2020 10:13:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82E392146E for ; Thu, 5 Mar 2020 10:13:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="USeffCvG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727049AbgCEKNx (ORCPT ); Thu, 5 Mar 2020 05:13:53 -0500 Received: from mail-wm1-f68.google.com ([209.85.128.68]:50395 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725816AbgCEKNx (ORCPT ); Thu, 5 Mar 2020 05:13:53 -0500 Received: by mail-wm1-f68.google.com with SMTP id a5so5559396wmb.0; Thu, 05 Mar 2020 02:13:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id; bh=cxk+MXcOeQV1WCXNQhxSl7i6QKVRGSx/9Z04A+Iz51g=; b=USeffCvGW2kT/2nvw5Nshh15XS/mOrJtx1GAM/JerLUzySuvvCWxin5vWI23TGKR/m tQFAFp1FGa71JP8HW4kq08UYGOqN4Dx2VlFi/QkN3/wMqIbGeFHvdJvmkpF3pm/6QP8n Z/7NoxN40809fdsX7ZklFuQSj6xO8cMDpdngGTFdC34m6w2IRaxzzBYkY/tI9Uu0Wlhk Pp4t+kSSO4TncVqzAVTZorMiglcTIIdDk5fkJZzu5CdK72Rw1NAjMcHJoGEoZOgaLNUl ByHiM8ysMfiPyPBPBa5RHYJ2b4kInsKpr9dnQnLDzsTSDyL/qkOiutYD4QxaltWVZnS2 TFuw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id; bh=cxk+MXcOeQV1WCXNQhxSl7i6QKVRGSx/9Z04A+Iz51g=; b=e6ib+0NOjXix6dycrhxjXeIdWD9GlUtBDHEDkwvrxBUEo6uT0NoqvKlMtUwDv6WBE4 ZWfn0IzJVNV8fcw9RA3hXUf30bTFFJPR5/jAxoFyktCxuEqo28nOz5FeB+7DVbvSqubA f9LHjQXtL/NaydH4CbJrQUPJnYl0XbaEEvzD8ZU9IUmNGqWjtsJvIzhesW4aEX64HUep NrEBpgUANHcogtLb2xyHwlJmgmccOmvUp0o5O1WlBnch7G6qEKXHc//XHjDEzuXguBsn UQgcO15ANfbyfr/wgnaaI19QjA3RiHQmHCQF2CEX8IYHsS3Ma7hJhO0kMfHXMXVdh4Iw bVOQ== X-Gm-Message-State: ANhLgQ3b/p3kKPO9wyUIRjnPGueS6lQYrbLaerLQ3Smb51li+++y5FKc Rm4TnL53Q/pROmw0OQ6C3jypRflc X-Google-Smtp-Source: ADFU+vtTOHJCj1WO3JX2pSwmBJ2rHiIGvOkj6V7BV0UQ+q4w1huemNS4QWTaP3HgDBcAIVBi2B7fTw== X-Received: by 2002:a1c:7719:: with SMTP id t25mr8314292wmi.7.1583403230448; Thu, 05 Mar 2020 02:13:50 -0800 (PST) Received: from 640k.localdomain.com ([93.56.166.5]) by smtp.gmail.com with ESMTPSA id p15sm8331066wma.40.2020.03.05.02.13.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 05 Mar 2020 02:13:49 -0800 (PST) From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: cavery@redhat.com, vkuznets@redhat.com, jan.kiszka@siemens.com, wei.huang2@amd.com Subject: [PATCH 0/4] KVM: nSVM: first step towards fixing event injection Date: Thu, 5 Mar 2020 11:13:43 +0100 Message-Id: <1583403227-11432-1-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Event injection in nSVM does not use check_nested_events, which means it is basically broken. As a first step, this fixes interrupt injection which is probably the most complicated case due to the interactions with V_INTR_MASKING and the host EFLAGS.IF. This series fixes Cathy's test case that I have sent earlier. Paolo Paolo Bonzini (4): KVM: nSVM: do not change host intercepts while nested VM is running KVM: nSVM: ignore L1 interrupt window while running L2 with V_INTR_MASKING=1 KVM: nSVM: implement check_nested_events for interrupts KVM: nSVM: avoid loss of pending IRQ/NMI before entering L2 arch/x86/kvm/svm.c | 172 ++++++++++++++++++++++++++++++++--------------------- 1 file changed, 103 insertions(+), 69 deletions(-) -- 1.8.3.1