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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 31593C433E2 for ; Sat, 16 May 2020 15:38:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 18524207D4 for ; Sat, 16 May 2020 15:38:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727944AbgEPPia (ORCPT ); Sat, 16 May 2020 11:38:30 -0400 Received: from elvis.franken.de ([193.175.24.41]:55492 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727098AbgEPPia (ORCPT ); Sat, 16 May 2020 11:38:30 -0400 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1jZytP-0004GR-02; Sat, 16 May 2020 17:38:27 +0200 Received: by alpha.franken.de (Postfix, from userid 1000) id BA823C04D3; Sat, 16 May 2020 17:37:26 +0200 (CEST) Date: Sat, 16 May 2020 17:37:26 +0200 From: Thomas Bogendoerfer To: Huacai Chen Cc: Paolo Bonzini , Aleksandar Markovic , kvm@vger.kernel.org, linux-mips@vger.kernel.org, Fuxin Zhang , Huacai Chen , Jiaxun Yang Subject: Re: [PATCH V5 06/15] KVM: MIPS: Introduce and use cpu_guest_has_ldpte Message-ID: <20200516153726.GC3334@alpha.franken.de> References: <1589359366-1669-1-git-send-email-chenhc@lemote.com> <1589359366-1669-7-git-send-email-chenhc@lemote.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1589359366-1669-7-git-send-email-chenhc@lemote.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, May 13, 2020 at 04:42:37PM +0800, Huacai Chen wrote: > Loongson-3 has lddir/ldpte instructions and their related CP0 registers > are the same as HTW. So we introduce a cpu_guest_has_ldpte flag and use > it to indicate whether we need to save/restore HTW related CP0 registers > (PWBase, PWSize, PWField and PWCtl). > > Reviewed-by: Aleksandar Markovic > Signed-off-by: Huacai Chen > Co-developed-by: Jiaxun Yang > --- > arch/mips/include/asm/cpu-features.h | 3 +++ > arch/mips/kernel/cpu-probe.c | 1 + > arch/mips/kvm/vz.c | 26 +++++++++++++------------- > 3 files changed, 17 insertions(+), 13 deletions(-) Acked-by: Thomas Bogendoerfer Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]