From nobody Sun Feb 8 16:05:57 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 94DB91FDA8E; Tue, 4 Mar 2025 10:06:48 +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=1741082810; cv=none; b=WeIsDxDTMtNf//bnhylOvs5MX/K29+Fg3gaKv35O7IMBz1iALnNzAQgC5r6qKGuC7E8l+26Q4gqiIOUmuu8KfYRqDzhswgNzIlzFwRW5Yo/lA/XaOcupzAc/foc9wocc2ts4PUgVYkDkX998jjojOQDg6fQ4FbDMxdii9RniQPo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741082810; c=relaxed/simple; bh=yEK5gWa2zv99K5+RWn52JQDzlQXg2wa+/jrxQH2vPjQ=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=cVcOHH9KuqrhoSGJRWJe5A623fJLnzNIrQL47znwycHMlV2ILDk2rTru6j/0OAko0pl/gfsRfBo1fJG45uIPCMzC/Q3Os+jtFQFeJOlBN5koaWHaqBYj9OMU8UB90y9oCEmlHY27r0vRIOSTUMGTbg0poPP+Nfzi/QBeTFRRt60= 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=1ljUPmpT; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=oooRa3IG; 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="1ljUPmpT"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="oooRa3IG" Date: Tue, 04 Mar 2025 10:06:46 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741082806; 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=oX5RKNqFlegG+DztlR/wOgQQRajiFO4AmhHYz5BbBBU=; b=1ljUPmpTAT6hGyfyI+jebiqPwW4QZuumBIwo3l6zcHj6q8r/JleEVVlQGnpg0D863tnrsO miZ0lr+E6ixeR4n4l4eWEmz9VJZa+CaT+VIl58HBNSSUcrTcmnvxA6JJzwEYvnp56TnGvw 7RqBPROcdPUh8EU8kotXKCJ6UzMDTeoq3tfhh/dH+u28d20jVW6qeciA/i7dwMR4i16Yis BwZcNVRNXKxPGJRV9b4vg48QTQeJwM0m47OuJJKtwFrcsBJnay9+OtSo+LOVRS3OQVLxun wfoQwXuP3Tv6Vx+p5E2JBj1OGy3N1K9jqs2S/w8BN4Xjy16aEjWv8DuH0t7PKg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741082806; 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=oX5RKNqFlegG+DztlR/wOgQQRajiFO4AmhHYz5BbBBU=; b=oooRa3IGjWH5voeWF30yUX7kl/+9DY1XdgIoBu0WHB/DiKOZQv/0Z5bUwl3rYEYTm3zQTP Qde3cHS1a0+dzPBQ== 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: Add ASM_CALL_CONSTRAINT to inline asm using CALL_NOSPEC 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: <20250303155446.112769-3-ubizjak@gmail.com> References: <20250303155446.112769-3-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: <174108280609.14745.3802372767652601775.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: 94770fe8648b80ee7ec4484e43b2381a25b62746 Gitweb: https://git.kernel.org/tip/94770fe8648b80ee7ec4484e43b2381a2= 5b62746 Author: Uros Bizjak AuthorDate: Mon, 03 Mar 2025 16:54:23 +01:00 Committer: Ingo Molnar CommitterDate: Tue, 04 Mar 2025 10:53:51 +01:00 x86/irq/32: Add ASM_CALL_CONSTRAINT to inline asm using CALL_NOSPEC This constraint should be used for any inline asm which has a CALL instruction, otherwise the compiler may schedule the asm before the frame pointer gets set up by the containing function, causing objtool to print a "call without frame pointer save/setup" warning. 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/20250303155446.112769-3-ubizjak@gmail.com --- arch/x86/kernel/irq_32.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c index eab4580..f351fa1 100644 --- a/arch/x86/kernel/irq_32.c +++ b/arch/x86/kernel/irq_32.c @@ -59,6 +59,7 @@ static void call_on_stack(void *func, void *stack) "movl %[sp], %%esp" : [sp] "+b" (stack) : [thunk_target] "D" (func) + COMMA(ASM_CALL_CONSTRAINT) : "memory", "cc", "edx", "ecx", "eax"); } =20 @@ -98,6 +99,7 @@ static inline int execute_on_irq_stack(int overflow, stru= ct irq_desc *desc) "movl %[sp], %%esp" : "+a" (desc), [sp] "+b" (isp) : [thunk_target] "D" (desc->handle_irq) + COMMA(ASM_CALL_CONSTRAINT) : "memory", "cc", "edx", "ecx"); return 1; }