From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 1DF9D4CB5B for ; Mon, 9 Mar 2026 19:06:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773083174; cv=none; b=P7bz5s5XNP97XGVyQ+yoFTAAvDzY0SkGAJmD82Y6eZzZavTP86XjaApGzGgZCUbQwkfUesrgWMpJXjxOzGbhR84hxfbWZdv01t6PWtlrhP/hJRFBwFMc0+Og6M4EL5qtp6n0Ytk84WYHt66PN/ZYtwpI9xgNRBKCW4KoSpdMQBI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773083174; c=relaxed/simple; bh=drOuKHOm4PAuF2Z67mKHYeqeTW7a5tlK2W5PJvTvIQ8=; h=Message-ID:Date:MIME-Version:From:Subject:To:Cc:References: In-Reply-To:Content-Type; b=FdWyAIzCgLBZmMEQbaTU6vCgT7nBx4GdHFjkJmLv4mfR+yVi8oU6kHqcFg/0A9TrEBHAcaoO/qDTyEDRpQV3+fXSN+uxChpp69CcGh5wgYRXxzwTE6wmnKJsR++kK7P88K8Eot/7uOS++02cr0UYVk7fofIuteNaGnV1kx6qPLI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Gi5NFhfa; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Gi5NFhfa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1773083172; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5AT7sE7JqfmniCrKEncpeQk8Mufi8uWIdilz523/Oe8=; b=Gi5NFhfaOcRPMOiOtz+TiSfrLu9XAUkm0P29PkCKjHs7gQCL/o8fBRQjazuMDYNpqa8kw3 ts7AzshGOf3hnZ4BMNt5lF4+HgJe70F5GMX7kQ8OqeL3m9/pc1csggHUaws5f51ywOij3W GjcpdUB/qw261zRVFISM3zLbaRzla3k= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-673-hQ46vRkEPR6KWI6-ePGIFA-1; Mon, 09 Mar 2026 15:06:10 -0400 X-MC-Unique: hQ46vRkEPR6KWI6-ePGIFA-1 X-Mimecast-MFC-AGG-ID: hQ46vRkEPR6KWI6-ePGIFA_1773083169 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 7ECB3180034E; Mon, 9 Mar 2026 19:06:08 +0000 (UTC) Received: from [10.22.81.138] (unknown [10.22.81.138]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 94D771956095; Mon, 9 Mar 2026 19:06:05 +0000 (UTC) Message-ID: <0a332e19-c99e-4dc5-a2d0-b36a2aef80a1@redhat.com> Date: Mon, 9 Mar 2026 15:06:04 -0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Waiman Long Subject: Re: [PATCH] irqchip/gic-v3-its: Don't acquire rt_spin_lock in allocate_vpe_l1_table() To: Marc Zyngier , Thomas Gleixner Cc: Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev References: <20260107215353.75612-1-longman@redhat.com> <864iowmrx6.wl-maz@kernel.org> <87ms2nsqju.ffs@tglx> <86wm1qlq7l.wl-maz@kernel.org> <87ecnwij44.ffs@tglx> <86v7h8l9ht.wl-maz@kernel.org> <87pl7gglya.ffs@tglx> <86tswrkrh4.wl-maz@kernel.org> <861pjjcqdi.wl-maz@kernel.org> <4dc6ab03-b2ad-4411-a49b-4513c5d592ea@redhat.com> <70dbf293-dd5b-4d77-b653-8f8c09129723@redhat.com> Content-Language: en-US In-Reply-To: <70dbf293-dd5b-4d77-b653-8f8c09129723@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 On 1/21/26 10:49 PM, Waiman Long wrote: > > On 1/21/26 3:41 PM, Waiman Long wrote: >> >>>> Waiman, can you please give the following hack a go on your box? The >>>> machines I have are thankfully limited to a single ITS group, so I >>>> can't directly reproduce your issue. >>> Have you managed to try this hack? I may be able to spend some time >>> addressing the issue in the next cycle if I have an indication that >>> I'm on the right track. >> >> Yes, I have tried out your hack patch and the 2-socket Grace test >> system booted up without producing any bug report for a RT debug >> kernel. I will try out your official patch once it come out. So >> moving the memory allocation to a later part of the hotplug bringup >> pipeline where sleeping is allowed should work. > > Attaching the dmesg log for your further investigation. Ping, Are you planning to send out an official patch soon? Thanks, Longman