From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 34BC92D73BC; Wed, 9 Sep 2026 14:50:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788965411; cv=none; b=giyX6Ys7bRntXYhxis9fkdujeQBkKKUopRtFD+MahFYMazaUbsGDQLNznilFbbbETrwpeqyDthQqnuhJq+hUK8mbRu/R3RPyRIOrWVa+sTyB5OkNp11tY/lnulA0ZAQGhWVtqDG/qnJaL3Yqu2PGvvNN3RiUfkFn7Dbkp+XSbwU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788965411; c=relaxed/simple; bh=65/Tclw+6SxUKfCYRbMf+RpwqrWmbCMLTUwSVGHPSTc=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=aDQJu3fiuQ7xnFGXRV9KqVMeaSYefgMgI0oqUR3dLd8ABTZ2wCHWfgvar3tJ6cCGIztIIygdD97zJ+KBKPrXMxCHkCp380rT+iQ5Vk/7ltyajAQv9m56ESQkjGQmLMMexL05qb/c98xqDkSDgIL1O2xe2bvWeKmlDRkq8WBjDYc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PXY6CUJx; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PXY6CUJx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF0AE1F00A3A; Wed, 9 Sep 2026 14:50:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788965409; bh=hj53gg4ff9DCPpubSP+QVQemVjU+gS+apEWWkxqCqWs=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=PXY6CUJxcNuepuXUdiOhOYV0+aUvtPS8ELf+WI/LU0tGbsvJxhEI5YI0FFhTX9UNd DbGmOtFyWqezaBnF6xU9vid0tAG1CIP5eGJJhoS+SWkDFVZdgYukaCAoiOnQGDE8zR MgCTAYAQjW/X1d7uFh99X8QxATiaVRr48pmLv2aMXnmvr4PMg5m31hptIWyv5UkOxv p9hZLf3yDo0mq6qj/jEeTBBUd4Ci0VZjQUK7rKh4wn1iR0w1JsHVcX6vTMCkoLygpF +ZI0OLTpB/qEGDkC1ntbrJhk2uupwnVjD1hzTdCKB8ttMPXXmL66Cag32C1Pl3k1v2 uyII/snvxTwsQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1x4Jcl-00000006jrE-39Qu; Wed, 09 Sep 2026 14:50:07 +0000 Date: Wed, 09 Sep 2026 15:50:07 +0100 Message-ID: <86y0da7a3k.wl-maz@kernel.org> From: Marc Zyngier To: Fuad Tabba Cc: Thomas Gleixner , Radu Rendec , Kemeng Shi , Will Deacon , Fuad Tabba , stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/3] irqchip/gic-v3: Lifetime and range fixes in the GICv3 and ITS drivers In-Reply-To: <20260908142632.2795308-1-fuad.tabba@linux.dev> References: <20260908142632.2795308-1-fuad.tabba@linux.dev> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: fuad.tabba@linux.dev, tglx@kernel.org, radu@rendec.net, shikemeng@huaweicloud.com, will@kernel.org, tabba@google.com, stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Tue, 08 Sep 2026 15:26:29 +0100, Fuad Tabba wrote: > > Hi folks, > > Three fixes to the GICv3 and ITS drivers, from reviewing the GIC series > floating around and chasing down Sashiko's reports. > > The first releases the partition node that gic_irq_get_fwspec_info() > takes from of_find_node_by_phandle() and never puts. Sashiko raised it > on an of/irq patch of mine, and I said a fix was forthcoming [1]. > > The second widens the per-device MSI clamp, which truncates to zero when > GITS_TYPER.ID_bits is at its maximum and then denies every MSI on that > ITS. I couldn't find an implementation that reports that maximum, so > this is one value at the edge rather than something anyone is hitting. > It carries Cc: stable because the commit it fixes was itself > backported, so drop the tag if you'd rather. > > The third clears vpt_page once its_vpe_teardown() has freed it, so the > NULL guard holds if teardown runs again on the same vPE. > > Based on Linux 7.3-rc2 (df2908090cda3). Reviewed-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.