From patchwork Fri Apr 24 11:15:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 11507581 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 537CF17EA for ; Fri, 24 Apr 2020 11:12:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 371DE20728 for ; Fri, 24 Apr 2020 11:12:02 +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="YXams7v7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726954AbgDXLMB (ORCPT ); Fri, 24 Apr 2020 07:12:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726289AbgDXLMB (ORCPT ); Fri, 24 Apr 2020 07:12:01 -0400 Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A495C09B045; Fri, 24 Apr 2020 04:12:01 -0700 (PDT) Received: by mail-pl1-x642.google.com with SMTP id f8so3624779plt.2; Fri, 24 Apr 2020 04:12:01 -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=6VYOsM5gqxnJ8Fj9mA3NrZhEPwkpUDOyTXJ2jtRSCA0=; b=YXams7v7NDuTYc/eBxH/rxi0az35iPhbKbyXQhKDwAtoc7j2coRHLlwXkJ6MrXQGna bsSCoO+z1HUJoi9X9G3yoRRmVZigbVw3Eoe8MPOHMyMTmJSfGpl3goKPGdqv3Stlf/zI SjrOtFl6Hl286uFwWQNhCsil0COzaPQO0qL10rqUOaBCPs1YWWkzhJQBqGmPqrG+Ougs knPzEY64s0hiEwzQHQcEivbY+yXJ6TxfwUa6se+mRIgIxNqU9JOtZThyv+19DaZW6Htn L+ClsTThUHyiqeY99YVOjbwvZ8o2m1uM+mSJ3V0Xk7paF8hZgYKnlfKb99AdXgkv+mh7 kGmw== 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=6VYOsM5gqxnJ8Fj9mA3NrZhEPwkpUDOyTXJ2jtRSCA0=; b=N2nemZKpn5HMgqkNn3KyhXB4vPHT8cvT4NEXsukN4lwEXbY8QxId/BmTMQlks04eYu CipkE75yyNnN6MNZjSgwQiMzaXsYFhcBR1kt6A5KpG3YcmIxVs7In0ls81L6O3h/8eNs YsQ/fk5FvAnuU2jgpgxKbx5JjIiK2iEuATJkOZuaxzwBb7pKw3m4qBBdR3cLuKXvgIcR 0ntLT3Hj+FCcSB6+K+SuJ/AuaeWSOACYRo5xcy8FGs7oG+0IduQ0Ofw8J6YNh9+ebusT i4XJ7Bfi+BIETwPxndhZz3lgfKyN++Q+UP87GW43XDxt2GAVSuLLlg5OHej9wnbCM+Ag tFlg== X-Gm-Message-State: AGi0PuZYOE4TQ7FFE+ZSRrtJGOmP6IGZLxfbDgiDqKqo6ukcXQmLYhjb sLK50bmLu83qTYdU3ErN1FULVCKcva4= X-Google-Smtp-Source: APiQypI+PDjfKg9J6nX/4fRibS+YLTKqyumKQ+lrfF9fNYgFHKALrTV6i3WfsRtvqRrlzWyxfi/Pmg== X-Received: by 2002:a17:90a:718c:: with SMTP id i12mr5693232pjk.142.1587726721033; Fri, 24 Apr 2020 04:12:01 -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 y10sm5470110pfb.53.2020.04.24.04.11.58 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Apr 2020 04:12:00 -0700 (PDT) From: Huacai Chen To: Paolo Bonzini , Thomas Bogendoerfer Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org, Fuxin Zhang , Huacai Chen , Jiaxun Yang , Huacai Chen Subject: [PATCH V2 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3 Date: Fri, 24 Apr 2020 19:15:27 +0800 Message-Id: <1587726933-31757-9-git-send-email-chenhc@lemote.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1587726933-31757-1-git-send-email-chenhc@lemote.com> References: <1587726933-31757-1-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. 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);