From: Marc Zyngier <maz@kernel.org>
To: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Toan Le" <toan@os.amperecomputing.com>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Thomas Gleixner" <tglx@linutronix.de>
Subject: Re: [PATCH v2 09/13] PCI: xgene-msi: Sanitise MSI allocation and affinity setting
Date: Fri, 11 Jul 2025 11:51:38 +0100 [thread overview]
Message-ID: <86cya79f0l.wl-maz@kernel.org> (raw)
In-Reply-To: <aHDjNr59aMzVQ5iA@lpieralisi>
On Fri, 11 Jul 2025 11:11:02 +0100,
Lorenzo Pieralisi <lpieralisi@kernel.org> wrote:
>
> On Fri, Jul 11, 2025 at 11:55:17AM +0200, Lorenzo Pieralisi wrote:
> > On Tue, Jul 08, 2025 at 06:34:00PM +0100, Marc Zyngier wrote:
>
> [...]
>
> > We could use MSInRx_HWIRQ_MASK, I can update it.
> >
> > More importantly, what code would set data->hwirq[6:4] (and
> > data->hwirq[7:7] below) ?
>
> Forget it. It is the hwirq allocation itself that sets those bits,
> 256 HWIRQs you use the effective cpu affinity to steer the frame,
> it makes sense now.
Exactly.
>
> I can update the code to use the mask above and merge it.
>
> Sorry for the noise,
No worries, and thanks for looking at it!
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2025-07-11 12:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-08 17:33 [PATCH v2 00/13] PCI: xgene: Fix and simplify the MSI driver Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 01/13] genirq: Teach handle_simple_irq() to resend an in-progress interrupt Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 02/13] PCI: xgene: Defer probing if the MSI widget driver hasn't probed yet Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 03/13] PCI: xgene: Drop useless conditional compilation Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 04/13] PCI: xgene: Drop XGENE_PCIE_IP_VER_UNKN Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 05/13] PCI: xgene-msi: Make per-CPU interrupt setup robust Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 06/13] PCI: xgene-msi: Drop superfluous fields from xgene_msi structure Marc Zyngier
2025-07-17 11:24 ` Markus Elfring
2025-07-08 17:33 ` [PATCH v2 07/13] PCI: xgene-msi: Use device-managed memory allocations Marc Zyngier
2025-07-08 17:33 ` [PATCH v2 08/13] PCI: xgene-msi: Get rid of intermediate tracking structure Marc Zyngier
2025-07-08 17:34 ` [PATCH v2 09/13] PCI: xgene-msi: Sanitise MSI allocation and affinity setting Marc Zyngier
2025-07-11 9:55 ` Lorenzo Pieralisi
2025-07-11 10:11 ` Lorenzo Pieralisi
2025-07-11 10:51 ` Marc Zyngier [this message]
2025-07-11 10:50 ` Marc Zyngier
2025-07-08 17:34 ` [PATCH v2 10/13] PCI: xgene-msi: Resend an MSI racing with itself on a different CPU Marc Zyngier
2025-07-08 17:34 ` [PATCH v2 11/13] PCI: xgene-msi: Probe as a standard platform driver Marc Zyngier
2025-07-17 11:45 ` Markus Elfring
2025-07-17 13:18 ` Lorenzo Pieralisi
2025-07-08 17:34 ` [PATCH v2 12/13] PCI: xgene-msi: Restructure handler setup/teardown Marc Zyngier
2025-07-08 17:34 ` [PATCH v2 13/13] cpu/hotplug: Remove unused cpuhp_state CPUHP_PCI_XGENE_DEAD Marc Zyngier
2025-07-11 13:15 ` Lorenzo Pieralisi
2025-07-17 9:52 ` [PATCH v2 00/13] PCI: xgene: Fix and simplify the MSI driver Lorenzo Pieralisi
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