From patchwork Wed Nov 13 14:54:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 1194310 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Lfl26Umk"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47Cnj44g68z9sPh for ; Thu, 14 Nov 2019 01:55:20 +1100 (AEDT) Received: from localhost ([::1]:45932 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iUu3C-0007ZW-63 for incoming@patchwork.ozlabs.org; Wed, 13 Nov 2019 09:55:18 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57534) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iUu2h-0007Vf-RZ for qemu-devel@nongnu.org; Wed, 13 Nov 2019 09:54:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iUu2g-00047B-VZ for qemu-devel@nongnu.org; Wed, 13 Nov 2019 09:54:47 -0500 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]:39015) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iUu2g-00046x-QK for qemu-devel@nongnu.org; Wed, 13 Nov 2019 09:54:46 -0500 Received: by mail-wr1-x441.google.com with SMTP id l7so2707300wrp.6 for ; Wed, 13 Nov 2019 06:54:46 -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:mime-version :content-transfer-encoding; bh=CXLDRqehEwCRk1nCh1wFoVyHcPkj4v1u9Gw3NGDDRGc=; b=Lfl26UmkM1BRESuWC6q19voym1sMmDCo1ZhN6qlfWxLutj3NwH945j8PdlGe+EvGp+ wqiQ3lO3A4cGnMHslUF8oJsqnfk9iR887H9kB/dRwviUXR4izHILsvwwlWxNv5Bpp3nk YleZdMOZp4oNSo55xWy9RVHSa9JPpteIA9tEw5D//c/J6Op2+5JcYsJSfG87n2tB4R6r caxEIDuAf1dRS2CTlWj3xxL3YjxkHF3y15VymaE1cltu3jaQ895/DgQrKHOt9pjiFpG9 cxqJI1t5ChmD2p9ULJ+L2mWqXGBSXWVZMzIuIDxK4OoRYSFNDA/kpt8FJuUwB8A/UwQd K7LA== 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 :mime-version:content-transfer-encoding; bh=CXLDRqehEwCRk1nCh1wFoVyHcPkj4v1u9Gw3NGDDRGc=; b=WJWI2L7yiQNYYBblReQSyS5dJB0eFOKW+tTCg8T2EHtedIhUlMMFOXXhwxFEZVFqOg NAY4LVJReaoEQmtuJKMWM8mzDM/vKqOxp6YKDFtLBb6IHPmOlPZiyl65RqN3UrWFSD/u mKkYiXGardOxJ9u49aCcaLn8QnqGa6ZCWjsew+66QZOcHOhOknUj1qPwsQfgq1IChbg6 fwLzmW6DwI07v/GQf6bHWKnEG4hg/Tj3Y3RW/D36XtrVxPqrYIZbNN33HI1yHWpZfNxI qG9wE3BW1oGfKEDGq/m1x9MEbwGjENpNdiB8P2jsIuFszdtpBoVzBMEdJPTDHLElOCR0 TYjw== X-Gm-Message-State: APjAAAVWMvO+eMchStdQ3ohjm3/PW9xfZzSd79GIk5wmZnljF02dTGyg zhylPdfe/s1K+MzC6D6pwC3iJFtF X-Google-Smtp-Source: APXvYqzBloGQHfLRAA7DKwProyLvuO2WnodI8ECCOKcUaSSYeVtMS5B2z+K9z6T26jvdbfU1jNF2pA== X-Received: by 2002:a5d:4589:: with SMTP id p9mr742356wrq.61.1573656885530; Wed, 13 Nov 2019 06:54:45 -0800 (PST) Received: from donizetti.redhat.com ([2001:b07:6468:f312:64a1:540d:6391:74a9]) by smtp.gmail.com with ESMTPSA id u13sm2360090wmm.45.2019.11.13.06.54.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Nov 2019 06:54:44 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH] target/i386: add PSCHANGE_NO bit for the ARCH_CAPABILITIES MSR Date: Wed, 13 Nov 2019 15:54:46 +0100 Message-Id: <20191113145446.16506-1-pbonzini@redhat.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::441 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jinpu Wang Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This is required to disable ITLB multihit mitigations in nested hypervisors. Signed-off-by: Paolo Bonzini --- target/i386/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index a624163ac2..2f60df37c4 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1204,7 +1204,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .type = MSR_FEATURE_WORD, .feat_names = { "rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry", - "ssb-no", "mds-no", NULL, NULL, + "ssb-no", "mds-no", "pschange-mc-no", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,