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=-15.8 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 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 67D47C433F5 for ; Wed, 8 Sep 2021 13:30:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 533F861211 for ; Wed, 8 Sep 2021 13:30:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351849AbhIHNbn (ORCPT ); Wed, 8 Sep 2021 09:31:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351727AbhIHNao (ORCPT ); Wed, 8 Sep 2021 09:30:44 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF129C061757 for ; Wed, 8 Sep 2021 06:29:35 -0700 (PDT) Message-ID: <20210908132525.794334915@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1631107774; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=A1n4ILCtM1X2Y8ay+C8F+KpSsPy2PuvE7HCormzCao0=; b=Vxb6+MtpZI9k1XCQdVFMVlSfDHIOsvCuLHKVNO8FiuC6FyNZYxVPcCOBT+6fJM+U+UvIgp YPtJQVLtkbzZMBfoA1ItlXl9p/IH+bWlC9E0WkKuhPo3jGMSVRlDwnPEWrLntI5RORiYv6 nNvXZM3QkAjjFeze2wRYOPqIYMMwUUkdP2fnlPrz6xEo0Hsm8z747xF2dlgYVn1869Ks5O 0nOZYL2J/zqLXDXFPstgn4JuvjSG8INiQJ2CYxX9zko+0FMSSegNEQb4lgwqPfpWcB4RrK RfyCm8PsiT4HpONlSsRqF0qjMhfQMdLzaDTnX8cZJS+e/awpnvdvKNqlpylWig== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1631107774; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=A1n4ILCtM1X2Y8ay+C8F+KpSsPy2PuvE7HCormzCao0=; b=MIr1hv7aSoKy3ycmqfFe9BZM5OQ9BF+MrMX05Nppl6GAu8VyC5B/g7xaRss++uIHKjW9eY bs+Fh9bhDDzukCCQ== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Al Viro , Linus Torvalds , Tony Luck , Alexei Starovoitov , Peter Ziljstra , Song Liu , Daniel Borkmann Subject: [patch V3 15/20] x86/fpu/signal: Change return type of copy_fpregs_to_sigframe() helpers to boolean References: <20210908130922.118265849@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Wed, 8 Sep 2021 15:29:34 +0200 (CEST) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that copy_fpregs_to_sigframe() returns boolean the individual return codes in the related helper functions do not make sense anymore. Change them to return boolean success/fail. Signed-off-by: Thomas Gleixner --- arch/x86/kernel/fpu/signal.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) --- a/arch/x86/kernel/fpu/signal.c +++ b/arch/x86/kernel/fpu/signal.c @@ -65,7 +65,7 @@ static inline int check_xstate_in_sigfra /* * Signal frame handlers. */ -static inline int save_fsave_header(struct task_struct *tsk, void __user *buf) +static inline bool save_fsave_header(struct task_struct *tsk, void __user *buf) { if (use_fxsr()) { struct xregs_state *xsave = &tsk->thread.fpu.state.xsave; @@ -82,18 +82,19 @@ static inline int save_fsave_header(stru if (__copy_to_user(buf, &env, sizeof(env)) || __put_user(xsave->i387.swd, &fp->status) || __put_user(X86_FXSR_MAGIC, &fp->magic)) - return -1; + return false; } else { struct fregs_state __user *fp = buf; u32 swd; + if (__get_user(swd, &fp->swd) || __put_user(swd, &fp->status)) - return -1; + return false; } - return 0; + return true; } -static inline int save_xstate_epilog(void __user *buf, int ia32_frame) +static inline bool save_xstate_epilog(void __user *buf, int ia32_frame) { struct xregs_state __user *x = buf; struct _fpx_sw_bytes *sw_bytes; @@ -131,7 +132,7 @@ static inline int save_xstate_epilog(voi err |= __put_user(xfeatures, (__u32 __user *)&x->header.xfeatures); - return err; + return !err; } static inline int copy_fpregs_to_sigframe(struct xregs_state __user *buf) @@ -219,10 +220,10 @@ bool copy_fpstate_to_sigframe(void __use } /* Save the fsave header for the 32-bit frames. */ - if ((ia32_fxstate || !use_fxsr()) && save_fsave_header(tsk, buf)) + if ((ia32_fxstate || !use_fxsr()) && !save_fsave_header(tsk, buf)) return false; - if (use_fxsr() && save_xstate_epilog(buf_fx, ia32_fxstate)) + if (use_fxsr() && !save_xstate_epilog(buf_fx, ia32_fxstate)) return false; return true;