Messages in this thread Patch in this message | | | From | John Garry <> | Subject | [PATCH 2/3] iommu/vt-d: Remove IOVA domain rcache flushing for CPU offlining | Date | Mon, 1 Mar 2021 20:12:20 +0800 |
| |
Now that the core code handles flushing per-IOVA domain CPU rcaches, remove the handling here.
Signed-off-by: John Garry <john.garry@huawei.com> --- drivers/iommu/intel/iommu.c | 31 ------------------------------- include/linux/cpuhotplug.h | 1 - 2 files changed, 32 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index ee0932307d64..d1e66e1b07b8 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4065,35 +4065,6 @@ static struct notifier_block intel_iommu_memory_nb = { .priority = 0 }; -static void free_all_cpu_cached_iovas(unsigned int cpu) -{ - int i; - - for (i = 0; i < g_num_of_iommus; i++) { - struct intel_iommu *iommu = g_iommus[i]; - struct dmar_domain *domain; - int did; - - if (!iommu) - continue; - - for (did = 0; did < cap_ndoms(iommu->cap); did++) { - domain = get_iommu_domain(iommu, (u16)did); - - if (!domain || domain->domain.type != IOMMU_DOMAIN_DMA) - continue; - - iommu_dma_free_cpu_cached_iovas(cpu, &domain->domain); - } - } -} - -static int intel_iommu_cpu_dead(unsigned int cpu) -{ - free_all_cpu_cached_iovas(cpu); - return 0; -} - static void intel_disable_iommus(void) { struct intel_iommu *iommu = NULL; @@ -4388,8 +4359,6 @@ int __init intel_iommu_init(void) bus_set_iommu(&pci_bus_type, &intel_iommu_ops); if (si_domain && !hw_pass_through) register_memory_notifier(&intel_iommu_memory_nb); - cpuhp_setup_state(CPUHP_IOMMU_INTEL_DEAD, "iommu/intel:dead", NULL, - intel_iommu_cpu_dead); down_read(&dmar_global_lock); if (probe_acpi_namespace_devices()) diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index cedac9986557..85996494bec1 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -57,7 +57,6 @@ enum cpuhp_state { CPUHP_PAGE_ALLOC_DEAD, CPUHP_NET_DEV_DEAD, CPUHP_PCI_XGENE_DEAD, - CPUHP_IOMMU_INTEL_DEAD, CPUHP_IOMMU_IOVA_DEAD, CPUHP_LUSTRE_CFS_DEAD, CPUHP_AP_ARM_CACHE_B15_RAC_DEAD, -- 2.26.2
| |