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Wed, 17 Jul 2024 21:10:04 +0100 Date: Wed, 17 Jul 2024 21:10:02 +0100 Message-ID: <86jzhj3hlx.wl-maz@kernel.org> From: Marc Zyngier To: Johan Hovold Cc: Thomas Gleixner , LKML , linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, anna-maria@linutronix.de, shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com, bhelgaas@google.com, rdunlap@infradead.org, vidyas@nvidia.com, ilpo.jarvinen@linux.intel.com, apatel@ventanamicro.com, kevin.tian@intel.com, nipun.gupta@amd.com, den@valinux.co.jp, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, gregkh@linuxfoundation.org, rafael@kernel.org, alex.williamson@redhat.com, will@kernel.org, lorenzo.pieralisi@arm.com, jgg@mellanox.com, ammarfaizi2@gnuweeb.org, robin.murphy@arm.com, lpieralisi@kernel.org, nm@ti.com, kristo@kernel.org, vkoul@kernel.org, okaya@kernel.org, agross@kernel.org, andersson@kernel.org, mark.rutland@arm.com, shameerali.kolothum.thodi@huawei.com, yuzenghui@huawei.com Subject: Re: [patch V4 00/21] genirq, irqchip: Convert ARM MSI handling to per device MSI domains In-Reply-To: References: <20240623142137.448898081@linutronix.de> <878qy26cd6.wl-maz@kernel.org> <86r0bt39zm.wl-maz@kernel.org> <86plrd2o5o.wl-maz@kernel.org> <86msmg2n73.wl-maz@kernel.org> 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/29.3 (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; 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SAEximRunCond expanded to false On Wed, 17 Jul 2024 14:38:59 +0100, Johan Hovold wrote: > > On Wed, Jul 17, 2024 at 01:54:40PM +0100, Marc Zyngier wrote: > > On Wed, 17 Jul 2024 08:23:39 +0100, > > Johan Hovold wrote: > > > > [ 8.692011] Reusing ITT for devID 0 > > > [ 8.693668] Reusing ITT for devID 0 > > > > This is really odd. It indicates that you have several devices sharing > > the same DeviceID, which I seriously doubt it is the case in a > > laptop. Do you have any non-transparent bridge here? lspci would help. > > Yeah, and these messages do not show up without the series (see log > below). They are there in the previous synchronous log however. I think I've finally nailed the sucker, and posted a potential fix[1]. It definitely restore my TX1 to a state that is no worse than normal, so something must be less wrong there. I'm pretty sure that the platform-msi equivalent is equally broken, but I don't have the energy to verify/debug that tonight. Thomas, feel free to squash this into your series or keep it as is, as you prefer. M. [1] https://lore.kernel.org/r/20240717195937.2240400-1-maz@kernel.org -- Without deviation from the norm, progress is not possible.