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Revert "iommu/vt-d: Enable PCI/IMS"

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This reverts commit 810531a1af.

IMS (Interrupt Message Store) support appeared in v6.2, but there are no
users yet.

Remove it for now.  We can add it back when a user comes along.

Link: https://lore.kernel.org/r/20240410221307.2162676-6-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Bjorn Helgaas 2024-04-10 17:13:05 -05:00
parent 72860ff3bb
commit 79f99aac79
1 changed files with 3 additions and 16 deletions
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19
drivers/iommu/intel/irq_remapping.c
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@ -82,7 +82,7 @@ static const struct irq_domain_ops intel_ir_domain_ops;
static void iommu_disable_irq_remapping(struct intel_iommu *iommu);
static int __init parse_ioapics_under_ir(void);
static const struct msi_parent_ops dmar_msi_parent_ops, virt_dmar_msi_parent_ops;
static const struct msi_parent_ops dmar_msi_parent_ops;
static bool ir_pre_enabled(struct intel_iommu *iommu)
{
@ -567,11 +567,7 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
irq_domain_update_bus_token(iommu->ir_domain, DOMAIN_BUS_DMAR);
iommu->ir_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT |
IRQ_DOMAIN_FLAG_ISOLATED_MSI;
if (cap_caching_mode(iommu->cap))
iommu->ir_domain->msi_parent_ops = &virt_dmar_msi_parent_ops;
else
iommu->ir_domain->msi_parent_ops = &dmar_msi_parent_ops;
iommu->ir_domain->msi_parent_ops = &dmar_msi_parent_ops;
ir_table->base = page_address(pages);
ir_table->bitmap = bitmap;
@ -1421,20 +1417,11 @@ static const struct irq_domain_ops intel_ir_domain_ops = {
};
static const struct msi_parent_ops dmar_msi_parent_ops = {
.supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED |
MSI_FLAG_MULTI_PCI_MSI |
MSI_FLAG_PCI_IMS,
.supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED | MSI_FLAG_MULTI_PCI_MSI,
.prefix = "IR-",
.init_dev_msi_info = msi_parent_init_dev_msi_info,
};
static const struct msi_parent_ops virt_dmar_msi_parent_ops = {
.supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED |
MSI_FLAG_MULTI_PCI_MSI,
.prefix = "vIR-",
.init_dev_msi_info = msi_parent_init_dev_msi_info,
};
/*
* Support of Interrupt Remapping Unit Hotplug
*/