diff options
| author | Vasant Hegde <vasant.hegde@amd.com> | 2022-07-06 17:07:55 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-07-07 09:37:35 +0200 |
| commit | 333e581bcdffc09e6c6c95a0c24bfc66b3b4dcfd (patch) | |
| tree | 4fc1298fc1d86c20499bdd83b514391c9e627652 /drivers/iommu/amd/init.c | |
| parent | eda797a2779509280c84c557a9caf568b23db4e6 (diff) | |
| download | linux-333e581bcdffc09e6c6c95a0c24bfc66b3b4dcfd.tar.bz2 | |
iommu/amd: Introduce per PCI segment irq_lookup_table
This will replace global irq lookup table (irq_lookup_table).
Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220706113825.25582-6-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/init.c')
| -rw-r--r-- | drivers/iommu/amd/init.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 35863ba9f86e..e05d792c57cf 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -684,6 +684,26 @@ static inline void free_rlookup_table(struct amd_iommu_pci_seg *pci_seg) pci_seg->rlookup_table = NULL; } +static inline int __init alloc_irq_lookup_table(struct amd_iommu_pci_seg *pci_seg) +{ + pci_seg->irq_lookup_table = (void *)__get_free_pages( + GFP_KERNEL | __GFP_ZERO, + get_order(rlookup_table_size)); + kmemleak_alloc(pci_seg->irq_lookup_table, + rlookup_table_size, 1, GFP_KERNEL); + if (pci_seg->irq_lookup_table == NULL) + return -ENOMEM; + + return 0; +} + +static inline void free_irq_lookup_table(struct amd_iommu_pci_seg *pci_seg) +{ + kmemleak_free(pci_seg->irq_lookup_table); + free_pages((unsigned long)pci_seg->irq_lookup_table, + get_order(rlookup_table_size)); + pci_seg->irq_lookup_table = NULL; +} /* * Allocates the command buffer. This buffer is per AMD IOMMU. We can @@ -1535,6 +1555,7 @@ static void __init free_pci_segments(void) for_each_pci_segment_safe(pci_seg, next) { list_del(&pci_seg->list); + free_irq_lookup_table(pci_seg); free_rlookup_table(pci_seg); free_dev_table(pci_seg); kfree(pci_seg); @@ -2900,6 +2921,7 @@ static int __init early_amd_iommu_init(void) amd_iommu_irq_remap = check_ioapic_information(); if (amd_iommu_irq_remap) { + struct amd_iommu_pci_seg *pci_seg; /* * Interrupt remapping enabled, create kmem_cache for the * remapping tables. @@ -2916,6 +2938,11 @@ static int __init early_amd_iommu_init(void) if (!amd_iommu_irq_cache) goto out; + for_each_pci_segment(pci_seg) { + if (alloc_irq_lookup_table(pci_seg)) + goto out; + } + irq_lookup_table = (void *)__get_free_pages( GFP_KERNEL | __GFP_ZERO, get_order(rlookup_table_size)); |