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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 AFF98C2B9F4 for ; Tue, 22 Jun 2021 17:08:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99F0761361 for ; Tue, 22 Jun 2021 17:08:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231936AbhFVRLL (ORCPT ); Tue, 22 Jun 2021 13:11:11 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:57898 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230076AbhFVRLK (ORCPT ); Tue, 22 Jun 2021 13:11:10 -0400 Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 892421FD36; Tue, 22 Jun 2021 17:08:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1624381733; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zNLnb8zC8KS5LpPq575etT0i9Nf+c3/GWwiSlBQ0EXM=; b=xnXTrCGMAAJgEu/hjIBkBEqzr/4zRe216wTgokg1eUXP78u/5I+gPpfcaxANAzGeNS5Dfm aTuYtukmGNIctI5ZFvHqT0TypqCTfKTRtyce3TQPS9LE2smUQypGbC4uwHHofAZ16CIKOs IAOIsrpwTHr9dofbih1ZAmrVdPe+QsI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1624381733; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zNLnb8zC8KS5LpPq575etT0i9Nf+c3/GWwiSlBQ0EXM=; b=E75eSKXix0clYSXAjowM7QBzwO9cbzbx7Njk+4bjvoYxyRIWRUjNXS6K9BN35iQwgPy0Ek 8x7zncDYTWORfYBw== Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id 777B411A97; Tue, 22 Jun 2021 17:08:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1624381733; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zNLnb8zC8KS5LpPq575etT0i9Nf+c3/GWwiSlBQ0EXM=; b=xnXTrCGMAAJgEu/hjIBkBEqzr/4zRe216wTgokg1eUXP78u/5I+gPpfcaxANAzGeNS5Dfm aTuYtukmGNIctI5ZFvHqT0TypqCTfKTRtyce3TQPS9LE2smUQypGbC4uwHHofAZ16CIKOs IAOIsrpwTHr9dofbih1ZAmrVdPe+QsI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1624381733; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zNLnb8zC8KS5LpPq575etT0i9Nf+c3/GWwiSlBQ0EXM=; b=E75eSKXix0clYSXAjowM7QBzwO9cbzbx7Njk+4bjvoYxyRIWRUjNXS6K9BN35iQwgPy0Ek 8x7zncDYTWORfYBw== Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id O2oeHCUZ0mDPPgAALh3uQQ (envelope-from ); Tue, 22 Jun 2021 17:08:53 +0000 Date: Tue, 22 Jun 2021 19:08:52 +0200 From: Borislav Petkov To: Thomas Gleixner Cc: LKML , Andy Lutomirski , Dave Hansen , Fenghua Yu , Tony Luck , Yu-cheng Yu , Sebastian Andrzej Siewior , Peter Zijlstra , Kan Liang Subject: Re: [patch V3 55/66] x86/fpu: Remove PKRU handling from switch_fpu_finish() Message-ID: References: <20210618141823.161158090@linutronix.de> <20210618143450.643422340@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210618143450.643422340@linutronix.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 18, 2021 at 04:19:18PM +0200, Thomas Gleixner wrote: > PKRU is already updated and the xstate is not longer the proper source of > information. > > Signed-off-by: Thomas Gleixner > --- > arch/x86/include/asm/fpu/internal.h | 34 ++++------------------------------ > 1 file changed, 4 insertions(+), 30 deletions(-) > > --- a/arch/x86/include/asm/fpu/internal.h > +++ b/arch/x86/include/asm/fpu/internal.h > @@ -549,39 +549,13 @@ static inline void switch_fpu_prepare(st > */ > > /* > - * Load PKRU from the FPU context if available. Delay loading of the > - * complete FPU state until the return to userland. > + * Delay loading of the complete FPU state until the return to userland. > + * PKRU is handled seperately. separately With that fixed: Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg