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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 7400BC43334 for ; Tue, 4 Sep 2018 09:16:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1F0072077C for ; Tue, 4 Sep 2018 09:16:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F0072077C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727257AbeIDNkQ (ORCPT ); Tue, 4 Sep 2018 09:40:16 -0400 Received: from mail.skyhub.de ([5.9.137.197]:36192 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726295AbeIDNkP (ORCPT ); Tue, 4 Sep 2018 09:40:15 -0400 X-Virus-Scanned: Nedap ESD1 at mail.skyhub.de Received: from mail.skyhub.de ([127.0.0.1]) by localhost (blast.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id yb5bC5t3mX_e; Tue, 4 Sep 2018 11:15:42 +0200 (CEST) Received: from zn.tnic (p200300EC2BC9A500329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2bc9:a500:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 605DF1EC01AF; Tue, 4 Sep 2018 11:15:42 +0200 (CEST) Date: Tue, 4 Sep 2018 11:15:36 +0200 From: Borislav Petkov To: Pu Wen Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, thomas.lendacky@amd.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH v5 04/16] x86/smpboot: smp init nodelay and no flush caches before sleep Message-ID: <20180904091536.GE32615@zn.tnic> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 29, 2018 at 08:43:41PM +0800, Pu Wen wrote: > Dhyana use no delay in smp_quirk_init_udelay(), and return in > mwait_play_dead() as AMD does. > > Signed-off-by: Pu Wen > --- > arch/x86/kernel/smpboot.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c > index f02ecaf..5369d7f 100644 > --- a/arch/x86/kernel/smpboot.c > +++ b/arch/x86/kernel/smpboot.c > @@ -676,6 +676,7 @@ static void __init smp_quirk_init_udelay(void) > > /* if modern processor, use no delay */ > if (((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 == 6)) || > + ((boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) && (boot_cpu_data.x86 >= 0x18)) || > ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && (boot_cpu_data.x86 >= 0xF))) { > init_udelay = 0; > return; > @@ -1592,7 +1593,8 @@ static inline void mwait_play_dead(void) > void *mwait_ptr; > int i; > > - if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) > + if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD || > + boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) > return; > if (!this_cpu_has(X86_FEATURE_MWAIT)) > return; > -- Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.