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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 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> In-Reply-To: <70dbf293-dd5b-4d77-b653-8f8c09129723@redhat.com> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Mimecast-MFC-PROC-ID: 5IMOtmhEw5iTvT5xqCelWebAHks90ZWcwuykXMEYjmM_1773083169 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260309_120619_283696_46265085 X-CRM114-Status: GOOD ( 12.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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