From: Bjorn Helgaas <helgaas@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will@kernel.org>,
linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Marc Zyngier <maz@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jason Gunthorpe <jgg@mellanox.com>,
Dave Jiang <dave.jiang@intel.com>,
Alex Williamson <alex.williamson@redhat.com>,
Kevin Tian <kevin.tian@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
Ashok Raj <ashok.raj@intel.com>, Jon Mason <jdmason@kudzu.us>,
Allen Hubbe <allenbh@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
linuxppc-dev@lists.ozlabs.org,
"Ahmed S. Darwish" <darwi@linutronix.de>,
Reinette Chatre <reinette.chatre@intel.com>
Subject: Re: [patch 37/39] PCI/MSI: Remove redundant msi_check() callback
Date: Wed, 16 Nov 2022 10:34:17 -0600 [thread overview]
Message-ID: <20221116163417.GA1116723@bhelgaas> (raw)
In-Reply-To: <20221111122015.749446904@linutronix.de>
On Fri, Nov 11, 2022 at 02:55:14PM +0100, Thomas Gleixner wrote:
> All these sanity checks are now done _before_ any allocation work
> happens. No point in doing it twice.
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
> ---
> drivers/pci/msi/irqdomain.c | 48 --------------------------------------------
> 1 file changed, 48 deletions(-)
>
> --- a/drivers/pci/msi/irqdomain.c
> +++ b/drivers/pci/msi/irqdomain.c
> @@ -64,51 +64,6 @@ static irq_hw_number_t pci_msi_domain_ca
> (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27;
> }
>
> -static inline bool pci_msi_desc_is_multi_msi(struct msi_desc *desc)
> -{
> - return !desc->pci.msi_attrib.is_msix && desc->nvec_used > 1;
> -}
> -
> -/**
> - * pci_msi_domain_check_cap - Verify that @domain supports the capabilities
> - * for @dev
> - * @domain: The interrupt domain to check
> - * @info: The domain info for verification
> - * @dev: The device to check
> - *
> - * Returns:
> - * 0 if the functionality is supported
> - * 1 if Multi MSI is requested, but the domain does not support it
> - * -ENOTSUPP otherwise
> - */
> -static int pci_msi_domain_check_cap(struct irq_domain *domain,
> - struct msi_domain_info *info,
> - struct device *dev)
> -{
> - struct msi_desc *desc = msi_first_desc(dev, MSI_DESC_ALL);
> -
> - /* Special handling to support __pci_enable_msi_range() */
> - if (pci_msi_desc_is_multi_msi(desc) &&
> - !(info->flags & MSI_FLAG_MULTI_PCI_MSI))
> - return 1;
> -
> - if (desc->pci.msi_attrib.is_msix) {
> - if (!(info->flags & MSI_FLAG_PCI_MSIX))
> - return -ENOTSUPP;
> -
> - if (info->flags & MSI_FLAG_MSIX_CONTIGUOUS) {
> - unsigned int idx = 0;
> -
> - /* Check for gaps in the entry indices */
> - msi_for_each_desc(desc, dev, MSI_DESC_ALL) {
> - if (desc->msi_index != idx++)
> - return -ENOTSUPP;
> - }
> - }
> - }
> - return 0;
> -}
> -
> static void pci_msi_domain_set_desc(msi_alloc_info_t *arg,
> struct msi_desc *desc)
> {
> @@ -118,7 +73,6 @@ static void pci_msi_domain_set_desc(msi_
>
> static struct msi_domain_ops pci_msi_domain_ops_default = {
> .set_desc = pci_msi_domain_set_desc,
> - .msi_check = pci_msi_domain_check_cap,
> };
>
> static void pci_msi_domain_update_dom_ops(struct msi_domain_info *info)
> @@ -130,8 +84,6 @@ static void pci_msi_domain_update_dom_op
> } else {
> if (ops->set_desc == NULL)
> ops->set_desc = pci_msi_domain_set_desc;
> - if (ops->msi_check == NULL)
> - ops->msi_check = pci_msi_domain_check_cap;
> }
> }
>
>
next prev parent reply other threads:[~2022-11-16 16:39 UTC|newest]
Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-11 13:54 [patch 00/39] genirq, PCI/MSI: Support for per device MSI and PCI/IMS - Part 1 cleanups Thomas Gleixner
2022-11-11 13:54 ` [patch 01/39] PCI/MSI: Check for MSI enabled in __pci_msix_enable() Thomas Gleixner
2022-11-16 15:39 ` Ashok Raj
2022-11-17 13:07 ` Thomas Gleixner
2022-11-17 14:00 ` Ashok Raj
2022-11-16 16:35 ` Bjorn Helgaas
2022-11-16 17:43 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-18 7:35 ` [patch 01/39] " Tian, Kevin
2022-11-11 13:54 ` [patch 02/39] iommu/vt-d: Remove bogus check for multi MSI-X Thomas Gleixner
2022-11-16 15:52 ` Ashok Raj
2022-11-16 17:02 ` Thomas Gleixner
2022-11-16 17:39 ` Ashok Raj
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 03/39] iommu/amd: " Thomas Gleixner
2022-11-16 16:02 ` Ashok Raj
2022-11-16 17:03 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 04/39] genirq/msi: Use MSI_DESC_ALL in msi_add_simple_msi_descs() Thomas Gleixner
2022-11-16 16:12 ` Ashok Raj
2022-11-16 17:43 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 05/39] genirq/msi: Remove filter from msi_free_descs_free_range() Thomas Gleixner
2022-11-16 17:43 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2023-03-01 10:55 ` [patch 05/39] " Miquel Raynal
2023-03-01 21:07 ` Thomas Gleixner
2023-03-02 14:43 ` Miquel Raynal
2023-03-02 17:22 ` [tip: irq/urgent] genirq/msi, platform-msi: Ensure that MSI descriptors are unreferenced tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 06/39] genirq/msi: Add missing kernel doc to msi_next_desc() Thomas Gleixner
2022-11-16 17:44 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 07/39] genirq/msi: Make __msi_domain_alloc_irqs() static Thomas Gleixner
2022-11-16 17:44 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 08/39] genirq/msi: Provide msi_domain_ops::post_free() Thomas Gleixner
2022-11-16 17:44 ` Jason Gunthorpe
2022-11-16 22:48 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] genirq/msi: Provide msi_domain_ops:: Post_free() tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 09/39] powerpc/pseries/msi: Use msi_domain_ops::msi_post_free() Thomas Gleixner
2022-11-16 17:45 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] powerpc/pseries/msi: Use msi_domain_ops:: Msi_post_free() tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 10/39] genirq/msi: Make __msi_domain_free_irqs() static Thomas Gleixner
2022-11-16 17:46 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 11/39] genirq/irqdomain: Move bus token enum into a seperate header Thomas Gleixner
2022-11-16 17:02 ` Ashok Raj
2022-11-16 17:48 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 12/39] genirq/msi: Add bus token to struct msi_domain_info Thomas Gleixner
2022-11-16 17:49 ` Jason Gunthorpe
2022-11-16 22:50 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 13/39] PCI/MSI: Use msi_domain_info::bus_token Thomas Gleixner
2022-11-16 16:14 ` Bjorn Helgaas
2022-11-16 17:51 ` Jason Gunthorpe
2022-11-16 22:51 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] PCI/MSI: Use msi_domain_info:: Bus_token tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 14/39] PCI/MSI: Let the MSI core free descriptors Thomas Gleixner
2022-11-16 16:15 ` Bjorn Helgaas
2022-11-16 17:53 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 15/39] PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN Thomas Gleixner
2022-11-16 16:12 ` Bjorn Helgaas
2022-11-16 17:04 ` Thomas Gleixner
2022-11-16 17:53 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:54 ` [patch 16/39] genirq: Get rid of GENERIC_MSI_IRQ_DOMAIN Thomas Gleixner
2022-11-16 17:54 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2023-01-13 12:17 ` [PATCH] irqchip/imx: Do not unconditionally enable GENERIC_MSI_IRQ Ingo Molnar
2023-01-17 9:25 ` Thomas Gleixner
2022-11-11 13:54 ` [patch 17/39] PCI/MSI: Get rid of externs in msi.h Thomas Gleixner
2022-11-16 16:15 ` Bjorn Helgaas
2022-11-16 17:54 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 18/39] PCI/MSI: Move mask and unmask helpers to msi.h Thomas Gleixner
2022-11-16 16:16 ` Bjorn Helgaas
2022-11-16 17:55 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 19/39] PCI/MSI: Move pci_disable_msi() to api.c Thomas Gleixner
2022-11-16 16:16 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 20/39] PCI/MSI: Move pci_enable_msi() API " Thomas Gleixner
2022-11-16 16:18 ` Bjorn Helgaas
2022-11-16 17:05 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 21/39] PCI/MSI: Move pci_enable_msix_range() " Thomas Gleixner
2022-11-16 16:20 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 22/39] PCI/MSI: Move pci_alloc_irq_vectors() " Thomas Gleixner
2022-11-16 16:22 ` Bjorn Helgaas
2022-11-16 17:06 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 23/39] PCI/MSI: Move pci_alloc_irq_vectors_affinity() " Thomas Gleixner
2022-11-16 16:23 ` Bjorn Helgaas
2022-11-16 17:07 ` Thomas Gleixner
2022-11-18 12:34 ` Ahmed S. Darwish
2022-11-18 12:58 ` Peter Zijlstra
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 24/39] PCI/MSI: Move pci_irq_vector() " Thomas Gleixner
2022-11-16 16:23 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 25/39] PCI/MSI: Move pci_free_irq_vectors() " Thomas Gleixner
2022-11-16 16:24 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 26/39] PCI/MSI: Move pci_msix_vec_count() " Thomas Gleixner
2022-11-16 16:24 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 27/39] PCI/MSI: Move pci_disable_msix() " Thomas Gleixner
2022-11-16 16:26 ` Bjorn Helgaas
2022-11-16 17:09 ` Thomas Gleixner
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:54 ` [patch 28/39] PCI/MSI: Move pci_irq_get_affinity() " Thomas Gleixner
2022-11-16 16:35 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:55 ` [patch 29/39] PCI/MSI: Move pci_msi_enabled() " Thomas Gleixner
2022-11-16 16:26 ` Bjorn Helgaas
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:55 ` [patch 30/39] PCI/MSI: Move pci_msi_restore_state() " Thomas Gleixner
2022-11-16 16:27 ` Bjorn Helgaas
2022-11-16 17:42 ` Jason Gunthorpe
2022-11-17 15:08 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:55 ` [patch 31/39] Documentation: PCI: Add reference to PCI/MSI device driver APIs Thomas Gleixner
2022-11-16 16:27 ` Bjorn Helgaas
2022-11-16 17:31 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:55 ` [patch 32/39] PCI/MSI: Reorder functions in msi.c Thomas Gleixner
2022-11-16 16:28 ` Bjorn Helgaas
2022-11-16 17:10 ` Thomas Gleixner
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Ahmed S. Darwish
2022-11-11 13:55 ` [patch 33/39] PCI/MSI: Sanitize MSI-X checks Thomas Gleixner
2022-11-16 16:29 ` Bjorn Helgaas
2022-11-16 17:57 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-18 7:38 ` [patch 33/39] " Tian, Kevin
2022-11-11 13:55 ` [patch 34/39] PCI/MSI: Reject multi-MSI early Thomas Gleixner
2022-11-16 16:31 ` Bjorn Helgaas
2022-11-17 8:22 ` Thomas Gleixner
2022-11-16 17:59 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:55 ` [patch 35/39] PCI/MSI: Reject MSI-X early Thomas Gleixner
2022-11-16 16:31 ` Bjorn Helgaas
2022-11-16 18:00 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2023-01-15 22:14 ` [PATCH] x86/xen: Set MSI_FLAG_PCI_MSIX support in Xen MSI domain David Woodhouse
2023-01-16 19:43 ` [tip: x86/urgent] x86/pci/xen: " tip-bot2 for David Woodhouse
2022-11-11 13:55 ` [patch 36/39] PCI/MSI: Validate MSIX contiguous restriction early Thomas Gleixner
2022-11-16 16:33 ` Bjorn Helgaas
2022-11-16 18:00 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] PCI/MSI: Validate MSI-X " tip-bot2 for Thomas Gleixner
2022-11-11 13:55 ` [patch 37/39] PCI/MSI: Remove redundant msi_check() callback Thomas Gleixner
2022-11-16 16:34 ` Bjorn Helgaas [this message]
2022-11-16 18:01 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-11 13:55 ` [patch 38/39] genirq/msi: Remove msi_domain_ops::msi_check() Thomas Gleixner
2022-11-16 18:01 ` Jason Gunthorpe
2022-11-17 15:07 ` [tip: irq/core] genirq/msi: Remove msi_domain_ops:: Msi_check() tip-bot2 for Thomas Gleixner
2022-11-11 13:55 ` [patch 39/39] x86/apic: Remove X86_IRQ_ALLOC_CONTIGUOUS_VECTORS Thomas Gleixner
2022-11-16 18:05 ` Jason Gunthorpe
2022-11-17 15:00 ` Thomas Gleixner
2022-11-17 15:07 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2022-11-18 7:40 ` [patch 00/39] genirq, PCI/MSI: Support for per device MSI and PCI/IMS - Part 1 cleanups Tian, Kevin
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