From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Nicolin Chen <nicolinc@nvidia.com>
Cc: maz@kernel.org, tglx@linutronix.de, bhelgaas@google.com,
alex.williamson@redhat.com, jgg@nvidia.com, leonro@nvidia.com,
shameerali.kolothum.thodi@huawei.com, robin.murphy@arm.com,
dlemoal@kernel.org, kevin.tian@intel.com, smostafa@google.com,
reinette.chatre@intel.com, eric.auger@redhat.com,
ddutile@redhat.com, yebin10@huawei.com, brauner@kernel.org,
apatel@ventanamicro.com, shivamurthy.shastri@linutronix.de,
anna-maria@linutronix.de, nipun.gupta@amd.com,
marek.vasut+renesas@mailbox.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH RFCv1 6/7] PCI/MSI: Add pci_alloc_irq_vectors_iovas helper
Date: Mon, 11 Nov 2024 11:34:47 +0200 [thread overview]
Message-ID: <ZzHPtwPdCehYyXWE@smile.fi.intel.com> (raw)
In-Reply-To: <e9399426b08b16efbdf7224c0122f5bf80f6d0ea.1731130093.git.nicolinc@nvidia.com>
On Fri, Nov 08, 2024 at 09:48:51PM -0800, Nicolin Chen wrote:
> Now, the common __pci_alloc_irq_vectors() accepts an array of msi_iovas,
> which is a list of preset IOVAs for MSI doorbell addresses.
>
> Add a helper that would pass in a list. A following patch will call this
> to forward msi_iovas from user space.
...
> +/**
> + * pci_alloc_irq_vectors_iovas() - Allocate multiple device interrupt
> + * vectors with preset msi_iovas
> + * @dev: the PCI device to operate on
> + * @min_vecs: minimum required number of vectors (must be >= 1)
> + * @max_vecs: maximum desired number of vectors
> + * @flags: allocation flags, as in pci_alloc_irq_vectors()
> + * @msi_iovas: list of IOVAs for MSI between [min_vecs, max_vecs]
> + *
> + * Same as pci_alloc_irq_vectors(), but with the extra @msi_iovas parameter.
> + * Check that function docs, and &struct irq_affinity, for more details.
> + */
Always validate your kernel-doc descriptions
scripts/kernel-doc -Wall -none -v ...
will give you a warning here.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2024-11-11 9:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-09 5:48 [PATCH RFCv1 0/7] vfio: Allow userspace to specify the address for each MSI vector Nicolin Chen
2024-11-09 5:48 ` [PATCH RFCv1 1/7] genirq/msi: Allow preset IOVA in struct msi_desc for MSI doorbell address Nicolin Chen
2024-11-09 5:48 ` [PATCH RFCv1 2/7] irqchip/gic-v3-its: Bypass iommu_cookie if desc->msi_iova is preset Nicolin Chen
2024-11-09 5:48 ` [PATCH RFCv1 3/7] PCI/MSI: Pass in msi_iova to msi_domain_insert_msi_desc Nicolin Chen
2024-11-09 5:48 ` [PATCH RFCv1 4/7] PCI/MSI: Allow __pci_enable_msi_range to pass in iova Nicolin Chen
2024-11-11 9:30 ` Andy Shevchenko
2024-11-09 5:48 ` [PATCH RFCv1 5/7] PCI/MSI: Extract a common __pci_alloc_irq_vectors function Nicolin Chen
2024-11-11 9:33 ` Andy Shevchenko
2024-11-09 5:48 ` [PATCH RFCv1 6/7] PCI/MSI: Add pci_alloc_irq_vectors_iovas helper Nicolin Chen
2024-11-11 9:34 ` Andy Shevchenko [this message]
2024-11-12 22:14 ` Nicolin Chen
2024-11-09 5:48 ` [PATCH RFCv1 7/7] vfio/pci: Allow preset MSI IOVAs via VFIO_IRQ_SET_ACTION_PREPARE Nicolin Chen
2024-11-11 13:09 ` [PATCH RFCv1 0/7] vfio: Allow userspace to specify the address for each MSI vector Robin Murphy
2024-11-11 14:14 ` Marc Zyngier
2024-11-12 22:13 ` Nicolin Chen
2024-11-12 21:54 ` Nicolin Chen
2024-11-13 1:34 ` Jason Gunthorpe
2024-11-13 21:11 ` Alex Williamson
2024-11-14 15:35 ` Robin Murphy
2024-11-20 13:17 ` Eric Auger
2024-11-20 14:03 ` Jason Gunthorpe
2024-11-28 11:15 ` Thomas Gleixner
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