From nobody Fri Jun 19 18:17:40 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AAB7C433F5 for ; Thu, 31 Mar 2022 09:01:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233511AbiCaJDN (ORCPT ); Thu, 31 Mar 2022 05:03:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233497AbiCaJCv (ORCPT ); Thu, 31 Mar 2022 05:02:51 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E33053E5E6; Thu, 31 Mar 2022 02:01:03 -0700 (PDT) Date: Thu, 31 Mar 2022 09:01:01 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1648717262; h=from:from:sender:sender:reply-to:reply-to:subject:subject: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=wR3VjHKbC4KCbwri74FXItqjtDlPNT79+oL5AJuet7A=; b=XZuulkPsjIcb632dUWB01NzYw5lRDjrRMOQkI1CBVf6nMa9eF/QxZseWqD9uEgO0gpquQ3 0w7jUDF0y1tEtMNlz+iycjvCxGYPNMyWxk2YSWdAtwcREFuOJRal2fr9Y13koeq7t6ulpK wB2SXd4Ya7QP3Qb7VKvKgdyBpXTazmuvPIAsTToEhkBl5utBO3SI+USQMm0UIe7b/czGd4 zDF45jRJA4XHz3z5APoRdL2W5PcbsDQt5L8x9MpXz6qm5D495DaXrEw9NPVWTGOrq3gZ4C IQu9MJkED+GComtfk/insNBUy4QSBgSPTaQ3WtB0PBvqbqRdQtmSF/IjLkgwmQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1648717262; h=from:from:sender:sender:reply-to:reply-to:subject:subject: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=wR3VjHKbC4KCbwri74FXItqjtDlPNT79+oL5AJuet7A=; b=3tEvSq8SxdeGSYRt+xNGjyYp7TDo/1nbS1++LBGr09sGMUum6SOkf54BMB43tafBEPbXUv H+yUcooHJlLW8+CQ== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/urgent] x86/fpu: Remove redundant XCOMP_BV initialization Cc: Thomas Gleixner , Borislav Petkov , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20220324134623.408932232@linutronix.de> References: <20220324134623.408932232@linutronix.de> MIME-Version: 1.0 Message-ID: <164871726137.389.6687530798602523896.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/urgent branch of tip: Commit-ID: a9f84fb7158fea60cbcadef5c0166fb22b469091 Gitweb: https://git.kernel.org/tip/a9f84fb7158fea60cbcadef5c0166fb22= b469091 Author: Thomas Gleixner AuthorDate: Thu, 24 Mar 2022 14:47:08 +01:00 Committer: Borislav Petkov CommitterDate: Tue, 29 Mar 2022 20:57:18 +02:00 x86/fpu: Remove redundant XCOMP_BV initialization fpu_copy_uabi_to_guest_fpstate() initializes the XCOMP_BV field in the XSAVE header. That's a leftover from the old KVM FPU buffer handling code. Since d69c1382e1b7 ("x86/kvm: Convert FPU handling to a single swap buffer") KVM uses the FPU core allocation code, which initializes the XCOMP_BV field already. Signed-off-by: Thomas Gleixner Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220324134623.408932232@linutronix.de --- arch/x86/kernel/fpu/core.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 19821f0..c049561 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -415,9 +415,6 @@ int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gf= pu, const void *buf, xpkru =3D get_xsave_addr(&kstate->regs.xsave, XFEATURE_PKRU); *vpkru =3D xpkru->pkru; } - - /* Ensure that XCOMP_BV is set up for XSAVES */ - xstate_init_xcomp_bv(&kstate->regs.xsave, kstate->xfeatures); return 0; } EXPORT_SYMBOL_GPL(fpu_copy_uabi_to_guest_fpstate);