We plan to call iommu_alloc_resv_region in a non preemptible section. Pass a GFP flag to the function and update all the call sites.
Signed-off-by: Eric Auger <[email protected]> --- drivers/acpi/arm64/iort.c | 3 ++- drivers/iommu/amd_iommu.c | 7 ++++--- drivers/iommu/arm-smmu-v3.c | 2 +- drivers/iommu/arm-smmu.c | 2 +- drivers/iommu/intel-iommu.c | 4 ++-- drivers/iommu/iommu.c | 7 ++++--- include/linux/iommu.h | 2 +- 7 files changed, 15 insertions(+), 12 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 9058cb084b91..8313b2d1b710 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -868,7 +868,8 @@ int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) struct iommu_resv_region *region; region = iommu_alloc_resv_region(base + SZ_64K, SZ_64K, - prot, IOMMU_RESV_MSI); + prot, IOMMU_RESV_MSI, + GFP_KERNEL); if (region) { list_add_tail(®ion->list, head); resv++; diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 09c9e45f7fa2..f2eb8e9cd8a6 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3136,7 +3136,8 @@ static void amd_iommu_get_resv_regions(struct device *dev, type = IOMMU_RESV_RESERVED; region = iommu_alloc_resv_region(entry->address_start, - length, prot, type); + length, prot, type, + GFP_KERNEL); if (!region) { dev_err(dev, "Out of memory allocating dm-regions\n"); return; @@ -3146,14 +3147,14 @@ static void amd_iommu_get_resv_regions(struct device *dev, region = iommu_alloc_resv_region(MSI_RANGE_START, MSI_RANGE_END - MSI_RANGE_START + 1, - 0, IOMMU_RESV_MSI); + 0, IOMMU_RESV_MSI, GFP_KERNEL); if (!region) return; list_add_tail(®ion->list, head); region = iommu_alloc_resv_region(HT_RANGE_START, HT_RANGE_END - HT_RANGE_START + 1, - 0, IOMMU_RESV_RESERVED); + 0, IOMMU_RESV_RESERVED, GFP_KERNEL); if (!region) return; list_add_tail(®ion->list, head); diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 4d5a694f02c2..f9b1279ef5bf 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2226,7 +2226,7 @@ static void arm_smmu_get_resv_regions(struct device *dev, int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO; region = iommu_alloc_resv_region(MSI_IOVA_BASE, MSI_IOVA_LENGTH, - prot, IOMMU_RESV_SW_MSI); + prot, IOMMU_RESV_SW_MSI, GFP_KERNEL); if (!region) return; diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 5e54cc0a28b3..646e76813e91 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1670,7 +1670,7 @@ static void arm_smmu_get_resv_regions(struct device *dev, int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO; region = iommu_alloc_resv_region(MSI_IOVA_BASE, MSI_IOVA_LENGTH, - prot, IOMMU_RESV_SW_MSI); + prot, IOMMU_RESV_SW_MSI, GFP_KERNEL); if (!region) return; diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a209199f3af6..2be36dff189a 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4220,7 +4220,7 @@ int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg) length = rmrr->end_address - rmrr->base_address + 1; rmrru->resv = iommu_alloc_resv_region(rmrr->base_address, length, prot, - IOMMU_RESV_DIRECT); + IOMMU_RESV_DIRECT, GFP_KERNEL); if (!rmrru->resv) goto free_rmrru; @@ -5489,7 +5489,7 @@ static void intel_iommu_get_resv_regions(struct device *device, reg = iommu_alloc_resv_region(IOAPIC_RANGE_START, IOAPIC_RANGE_END - IOAPIC_RANGE_START + 1, - 0, IOMMU_RESV_MSI); + 0, IOMMU_RESV_MSI, GFP_KERNEL); if (!reg) return; list_add_tail(®->list, head); diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 67ee6623f9b2..ae4ea5c0e6f9 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -256,7 +256,7 @@ static int iommu_insert_resv_region(struct iommu_resv_region *new, } insert: region = iommu_alloc_resv_region(new->start, new->length, - new->prot, new->type); + new->prot, new->type, GFP_KERNEL); if (!region) return -ENOMEM; @@ -1891,11 +1891,12 @@ void iommu_put_resv_regions(struct device *dev, struct list_head *list) struct iommu_resv_region *iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, - enum iommu_resv_type type) + enum iommu_resv_type type, + gfp_t flags) { struct iommu_resv_region *region; - region = kzalloc(sizeof(*region), GFP_KERNEL); + region = kzalloc(sizeof(*region), flags); if (!region) return NULL; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index a815cf6f6f47..ba91666998fb 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -364,7 +364,7 @@ extern void iommu_put_resv_regions(struct device *dev, struct list_head *list); extern int iommu_request_dm_for_dev(struct device *dev); extern struct iommu_resv_region * iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, - enum iommu_resv_type type); + enum iommu_resv_type type, gfp_t flags); extern int iommu_get_group_resv_regions(struct iommu_group *group, struct list_head *head); -- 2.20.1
