From patchwork Tue May 12 10:31:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 11542907 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2957481 for ; Tue, 12 May 2020 10:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 110EA20733 for ; Tue, 12 May 2020 10:34:29 +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="O2t1bQi5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728990AbgELKe2 (ORCPT ); Tue, 12 May 2020 06:34:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729336AbgELKe2 (ORCPT ); Tue, 12 May 2020 06:34:28 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A938C061A0C; Tue, 12 May 2020 03:34:28 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id j21so5954214pgb.7; Tue, 12 May 2020 03:34:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=L2RqfqhSc+H+ePr34TV4/iissQYNA9v85c7Lc6tpCIk=; b=O2t1bQi56IwPSCMA8Y5PdU+KtFeunCDRbtTW0+OE5MX5oE/2gq1FrlmxcVlvA4gDPK 7QiNt010v47uuC+Y5IqNEZoyYgq/+68SI0Gh7GaPLQwsFuaDBtujXhJ9qfBPAtr0U8R7 kZAMvFG3H48zhfsU2BozduulI1ETPhxipQFxkwXAC1LIAocT7wiGfZpzokkfRHsBWsct 9uSnt4awqb0AiYzMVPciJC+1Hg55GsEBK30S1dFc8bhe35epGFgTUJiQU3k4HJDlL4Db l/KNvah52mKsLUVxUJ5Wp/sQh/Dr3hysJ6inApBAHqQDG20a71qINanrScROoh/qXyFw iwZg== 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 :in-reply-to:references; bh=L2RqfqhSc+H+ePr34TV4/iissQYNA9v85c7Lc6tpCIk=; b=p6sCIO4WZLxGU5aV8xJ+AshDPobM3u0QsP3Ax0heJTIMC2zusLb0gSNJyJmA65KWIs Qz8f5/nwgdHtKJGw3bVLFjouYmRJQtCMiVAsILBxiiKRZc2NGjtPuG4nQgWhcJEyLyWv q1Gvzfszu0IkkSweYKOSR38gPb/WCfyAHf4Wy/LNfwjO/0Eg/48qLRHL7t49UqHps9GO LcZlHzQn/wZz+mQtByIr7mddyQ+05ikxYQw4HcR7Ou3/rFiyTruFkGZpK0Y8eP6OhQ+s 5bi4yELRCJL7pkqrqPFrsgqCTpXO+rZyd79/ZVds5RldGwBWMtG9V5igAJ7rH/HfQW7/ +joA== X-Gm-Message-State: AGi0PuYQ1hB9LEtNA6qckDQr9WnKF31S0sbFml2wlWd5ij0mk1Ow6uTX pnZ7g4pY8gYfLSdu1yBIOWk= X-Google-Smtp-Source: APiQypJdUuO3SbkYIX0ecQAdtWRaRkfRQwM2x4YPjdpRdI52lYG5zQ4LKQb8feTZHssTVGd2nT0Fag== X-Received: by 2002:a63:cf10:: with SMTP id j16mr11035267pgg.242.1589279667996; Tue, 12 May 2020 03:34:27 -0700 (PDT) Received: from software.domain.org (28.144.92.34.bc.googleusercontent.com. [34.92.144.28]) by smtp.gmail.com with ESMTPSA id q11sm11617094pfl.97.2020.05.12.03.34.25 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 12 May 2020 03:34:27 -0700 (PDT) From: Huacai Chen To: Paolo Bonzini , Thomas Bogendoerfer , Aleksandar Markovic Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org, Fuxin Zhang , Huacai Chen , Jiaxun Yang , Huacai Chen Subject: [PATCH V4 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3 Date: Tue, 12 May 2020 18:31:14 +0800 Message-Id: <1589279480-27722-9-git-send-email-chenhc@lemote.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1589279480-27722-1-git-send-email-chenhc@lemote.com> References: <1589279480-27722-1-git-send-email-chenhc@lemote.com> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Loongson-3's indexed cache operations need a node-id in the address, but in KVM guest the node-id may be incorrect. So, let indexed cache operations cause guest exit on Loongson-3. Reviewed-by: Aleksandar Markovic Signed-off-by: Huacai Chen Co-developed-by: Jiaxun Yang --- arch/mips/kvm/vz.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c index f9fbbc16..ab320f0 100644 --- a/arch/mips/kvm/vz.c +++ b/arch/mips/kvm/vz.c @@ -2853,8 +2853,12 @@ static int kvm_vz_hardware_enable(void) write_c0_guestctl0(MIPS_GCTL0_CP0 | (MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) | MIPS_GCTL0_CG | MIPS_GCTL0_CF); - if (cpu_has_guestctl0ext) - set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI); + if (cpu_has_guestctl0ext) { + if (current_cpu_type() != CPU_LOONGSON64) + set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI); + else + clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI); + } if (cpu_has_guestid) { write_c0_guestctl1(0);