From: "Danilo Krummrich" <dakr@kernel.org>
To: "Gary Guo" <gary@garyguo.net>
Cc: <bhelgaas@google.com>, <kwilczynski@kernel.org>,
<aliceryhl@google.com>, <daniel.almeida@collabora.com>,
<ojeda@kernel.org>, <boqun@kernel.org>,
<bjorn3_gh@protonmail.com>, <lossin@kernel.org>,
<a.hindborg@kernel.org>, <tmgross@umich.edu>, <tamird@kernel.org>,
<acourbot@nvidia.com>, <work@onurozkan.dev>,
<jhubbard@nvidia.com>, <ttabi@nvidia.com>, <apopple@nvidia.com>,
<ecourtney@nvidia.com>, <shashanks@nvidia.com>, <zhiw@nvidia.com>,
<driver-core@lists.linux.dev>, <linux-pci@vger.kernel.org>,
<rust-for-linux@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 5/5] rust: pci: expose the allocated interrupt type
Date: Wed, 12 Aug 2026 19:57:48 +0200 [thread overview]
Message-ID: <DKN5RMNZUBGM.1EFIG6TFAT3AW@kernel.org> (raw)
In-Reply-To: <DKN47TIEH9R7.2Z6FDMEZTUKL5@garyguo.net>
On Wed Aug 12, 2026 at 6:44 PM CEST, Gary Guo wrote:
> On Wed Aug 12, 2026 at 12:39 AM BST, Danilo Krummrich wrote:
>> + pub fn irq_type(&self) -> IrqType {
>> + self.reg.irq_type()
>
> Do you expect people to call this on the `IrqVetor` (or even
> `IrqVectorRegistration`)? This is really a property of the device, and not on a
> specific IRQ vector/allocation.
You are not wrong, but the C API sets msix_enabled and msi_enabled in
pci_alloc_irq_vectors() and clears them in pci_free_irq_vectors().
So, if we'd put it on Device<Bound> it'd be a bit of a footgun because it would
potentially yield different results depending on whether it is called before or
after obtaining an IrqVectorRegistration.
next prev parent reply other threads:[~2026-08-12 17:57 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-11 23:39 [PATCH v2 0/5] Rework PCI IRQ vector code Danilo Krummrich
2026-08-11 23:39 ` [PATCH v2 1/5] rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type Danilo Krummrich
2026-08-11 23:52 ` sashiko-bot
2026-08-12 16:26 ` Gary Guo
2026-08-12 17:37 ` Danilo Krummrich
2026-08-12 18:11 ` Gary Guo
2026-08-12 18:47 ` Danilo Krummrich
2026-08-12 19:01 ` Gary Guo
2026-08-12 19:57 ` Danilo Krummrich
2026-08-11 23:39 ` [PATCH v2 2/5] rust: pci: resolve IRQ in vector() and embed IrqRequest in IrqVector Danilo Krummrich
2026-08-11 23:48 ` sashiko-bot
2026-08-12 16:38 ` Gary Guo
2026-08-12 17:44 ` Danilo Krummrich
2026-08-12 18:09 ` Gary Guo
2026-08-12 19:31 ` Danilo Krummrich
2026-08-11 23:39 ` [PATCH v2 3/5] rust: pci: remove request_irq() and request_threaded_irq() from Device Danilo Krummrich
2026-08-11 23:47 ` sashiko-bot
2026-08-11 23:39 ` [PATCH v2 4/5] PCI: Add pci_irq_type() to query the allocated interrupt type Danilo Krummrich
2026-08-11 23:44 ` sashiko-bot
2026-08-11 23:39 ` [PATCH v2 5/5] rust: pci: expose " Danilo Krummrich
2026-08-11 23:46 ` sashiko-bot
2026-08-12 16:44 ` Gary Guo
2026-08-12 17:57 ` Danilo Krummrich [this message]
2026-08-12 18:16 ` Gary Guo
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