From nobody Sun Feb 8 12:19:55 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D62F21FCF72; Tue, 4 Mar 2025 10:36:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741084587; cv=none; b=Am+kWroAqu4AM49DDFTYhdsnODRXfyAIDdwuT4IO8CGtUQEm8U1nRK2Bazp/3sVcvIhXbhnFeMx1cUHHl7kjeQquB5xyH/9jpv1RbE/qjf29GPn4hxIjlELD9JF9jN37iCnPfvMj8JJEWH+gMmZiokpFSpUsPnlPkyu3dFtLXJY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741084587; c=relaxed/simple; bh=RYO8jId/MvVQaZWNR9dPAZmzSYHuxg9UO/AVxEQF6uQ=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=p0OkBdJ50HUJwkFXJGEr2zD29WgPMLBGlttLZTGNoDjwiXvSxLZkuJKxXJ9GLmrBrdlG0Y24fftMUCzllgl9EdxmATuSIucVBspn51Pdkq9nzrHifXzNcJZrY4dkNEcyQ6D0HpEcSZmIbzxnU+cWCjqr5obq3/3iM1FOzjROV24= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=rIpCSZKX; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=lyzwcYSC; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="rIpCSZKX"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="lyzwcYSC" Date: Tue, 04 Mar 2025 10:36:23 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741084584; 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=uG5FYmd2QEVEx7Im4OGTxrTLul/JvIUu9ZGwsg058Zw=; b=rIpCSZKXIZH5oFKMhBmx92rH5PbSCzHq18Y8BulwX5Ctrm+1G9//54zXrj2uerPXHu2F2c E+wnD33kkS5CxGwbEMyOOC/t030HYX2B9crw6gMzkEdrw2h/36xLnv/Imeeu1qPp2QDQDH Mx3WsLypxWsLfpUdA5YM96oeTTgnlqlmdzEddMSMAdvUqUfG/hGApG3p+IUZnBGivQ9+nh Mj9RSeUznFT5gxSyeQFtWxaqqM2a3SpqvO21FuwVMORsrHtqyHUoXjoglRr2Zamk5CbbXf N1lUYR9ePnSziCWBIGEXX3WEIFvXov65WwTjoujBvmdQ3g+7oKojMfdMsldtAg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741084584; 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=uG5FYmd2QEVEx7Im4OGTxrTLul/JvIUu9ZGwsg058Zw=; b=lyzwcYSCaIuVpntRcVJWJe1psvHmTw9Y1fCSi/Rx0XxtV5/f6S5rYs7OT5cVf97bE/dfL1 by+4gQitA3+npPCA== From: "tip-bot2 for Uros Bizjak" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/asm] x86/irq/32: Use named operands in inline asm Cc: Uros Bizjak , Ingo Molnar , Andy Lutomirski , Brian Gerst , "H. Peter Anvin" , Linus Torvalds , Peter Zijlstra , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20250303155446.112769-1-ubizjak@gmail.com> References: <20250303155446.112769-1-ubizjak@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <174108458356.14745.3836700447171821326.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/asm branch of tip: Commit-ID: df682f7b763e8d983ef70c4908f8980a2ffc81cd Gitweb: https://git.kernel.org/tip/df682f7b763e8d983ef70c4908f8980a2= ffc81cd Author: Uros Bizjak AuthorDate: Mon, 03 Mar 2025 16:54:21 +01:00 Committer: Ingo Molnar CommitterDate: Tue, 04 Mar 2025 11:21:40 +01:00 x86/irq/32: Use named operands in inline asm Also use inout "+" constraint modifier where appropriate. Signed-off-by: Uros Bizjak Signed-off-by: Ingo Molnar Cc: Andy Lutomirski Cc: Brian Gerst Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20250303155446.112769-1-ubizjak@gmail.com --- arch/x86/kernel/irq_32.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c index dc1049c..c4719c4 100644 --- a/arch/x86/kernel/irq_32.c +++ b/arch/x86/kernel/irq_32.c @@ -54,12 +54,11 @@ static inline void print_stack_overflow(void) { } =20 static void call_on_stack(void *func, void *stack) { - asm volatile("xchgl %%ebx,%%esp \n" + asm volatile("xchgl %[sp], %%esp\n" CALL_NOSPEC - "movl %%ebx,%%esp \n" - : "=3Db" (stack) - : "0" (stack), - [thunk_target] "D"(func) + "movl %[sp], %%esp" + : [sp] "+b" (stack) + : [thunk_target] "D" (func) : "memory", "cc", "edx", "ecx", "eax"); } =20 @@ -71,7 +70,7 @@ static inline void *current_stack(void) static inline int execute_on_irq_stack(int overflow, struct irq_desc *desc) { struct irq_stack *curstk, *irqstk; - u32 *isp, *prev_esp, arg1; + u32 *isp, *prev_esp; =20 curstk =3D (struct irq_stack *) current_stack(); irqstk =3D __this_cpu_read(pcpu_hot.hardirq_stack_ptr); @@ -94,12 +93,11 @@ static inline int execute_on_irq_stack(int overflow, st= ruct irq_desc *desc) if (unlikely(overflow)) call_on_stack(print_stack_overflow, isp); =20 - asm volatile("xchgl %%ebx,%%esp \n" + asm volatile("xchgl %[sp], %%esp\n" CALL_NOSPEC - "movl %%ebx,%%esp \n" - : "=3Da" (arg1), "=3Db" (isp) - : "0" (desc), "1" (isp), - [thunk_target] "D" (desc->handle_irq) + "movl %[sp], %%esp" + : "+a" (desc), [sp] "+b" (isp) + : [thunk_target] "D" (desc->handle_irq) : "memory", "cc", "ecx"); return 1; }