From: Vasant Hegde Date: Wed, 6 Jul 2022 11:38:02 +0000 (+0530) Subject: iommu/amd: Introduce per PCI segment alias table size X-Git-Tag: perf-urgent-2022-08-21~56^2^8~35 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=74ce42a9ab7a245c293c58a4cb964ad285e8fb2e;p=users%2Fdwmw2%2Flinux.git iommu/amd: Introduce per PCI segment alias table size It will replace global "alias_table_size" variable. Co-developed-by: Suravee Suthikulpanit Signed-off-by: Suravee Suthikulpanit Signed-off-by: Vasant Hegde Link: https://lore.kernel.org/r/20220706113825.25582-13-vasant.hegde@amd.com Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h index 1dbe9c7f973d2..8638b1107dd20 100644 --- a/drivers/iommu/amd/amd_iommu_types.h +++ b/drivers/iommu/amd/amd_iommu_types.h @@ -558,6 +558,9 @@ struct amd_iommu_pci_seg { /* Size of the device table */ u32 dev_table_size; + /* Size of the alias table */ + u32 alias_table_size; + /* * device table virtual address * diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 2950184d5540d..b878a50e856da 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -712,7 +712,7 @@ static int __init alloc_alias_table(struct amd_iommu_pci_seg *pci_seg) int i; pci_seg->alias_table = (void *)__get_free_pages(GFP_KERNEL, - get_order(alias_table_size)); + get_order(pci_seg->alias_table_size)); if (!pci_seg->alias_table) return -ENOMEM; @@ -728,7 +728,7 @@ static int __init alloc_alias_table(struct amd_iommu_pci_seg *pci_seg) static void __init free_alias_table(struct amd_iommu_pci_seg *pci_seg) { free_pages((unsigned long)pci_seg->alias_table, - get_order(alias_table_size)); + get_order(pci_seg->alias_table_size)); pci_seg->alias_table = NULL; } @@ -1583,6 +1583,7 @@ static struct amd_iommu_pci_seg *__init alloc_pci_segment(u16 id, pci_seg->last_bdf = last_bdf; DUMP_printk("PCI segment : 0x%0x, last bdf : 0x%04x\n", id, last_bdf); pci_seg->dev_table_size = tbl_size(DEV_TABLE_ENTRY_SIZE); + pci_seg->alias_table_size = tbl_size(ALIAS_TABLE_ENTRY_SIZE); pci_seg->id = id; init_llist_head(&pci_seg->dev_data_list);