From nobody Sun Feb 8 17:22:22 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 728ED2045A8; Tue, 4 Mar 2025 19:23:41 +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=1741116225; cv=none; b=dwrWydErQQmAQT/j/husgcY5TEkRtTQOSpTjLoNclvFdQrm5ukC3TyoUZh2Mg73hnpGctHMaULa+qdXr+KeHHRbMie1ZB8S/lsMqJp12kj7pTwY6HUIou/YtqRSWoMmxajRgH5FmJlAc9PAuSyQYOpbxYd2hKOaQfIqGB+2ov0w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741116225; c=relaxed/simple; bh=C9hYFQ6ahekNQekedkTeagAWzNhJsDKO60fzBEvradU=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=dIRHZnR3K0grS6ZiPqDuh7eVtz35oze1IuOCtxSKGrgjsToO1Nx7y8kTezl0JLQgOMV//NH38yu++5j/i9FiQOBi1VJ84r0qZhmOcV5yzq4dIDUmInfHYeuI+FAxWOWjsPTVFe2RANd8OehXe0JMJFB0Zq6ycJAITAiz7h1ZjfQ= 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=DayXXhFe; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=UaM5sGpk; 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="DayXXhFe"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="UaM5sGpk" Date: Tue, 04 Mar 2025 19:23:39 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741116220; 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=zEUSYBfqNpR5w7A4w9n5LK7w8E41zYIeC9UXMLNCw4A=; b=DayXXhFeorDYyokXjOKOhIM7hG1ayKO3MXb0H4QniiS+hjV0yWUbpzQmjOjXuvO6T7Sik4 jCHP+ZVWVOwDTsfhN7qYFhNs6KKG8cIoPVHOiGJLvLzXyU8ruDw4JvYKUdJqRxO0LONACb +dhLe5Zg/gAc6qhecBFdt2WAhZQvfNiz1Eqq2NFI4k7nqODBuNqhR9plDz/r1NMHTHXqve EiWCX8+FtleMOtASS3wy/zVpJ3/LYZwpfeFQ491OYz633P7zkWlnF2ziTYNr7np971UPxQ 7U2syfsZyddyrIZEZGMSPHPUhnTpDxjhM+L/KYmBjyXW4Pepdw3V8cbPlkm0IA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741116220; 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=zEUSYBfqNpR5w7A4w9n5LK7w8E41zYIeC9UXMLNCw4A=; b=UaM5sGpkRtF9MfTHTLD4xyvmoBmA8kkH03ePvwv0DJeRGgwUh/bPbP3K9YngPWaM+F/BYA wQtyh1bBdjK9t3Cg== 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: <174111621940.14745.13783054342564296917.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: 784af8f453fddec902639f42e2456f7fb5199450 Gitweb: https://git.kernel.org/tip/784af8f453fddec902639f42e2456f7fb= 5199450 Author: Uros Bizjak AuthorDate: Mon, 03 Mar 2025 16:54:23 +01:00 Committer: Ingo Molnar CommitterDate: Tue, 04 Mar 2025 20:12:40 +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; }