@@ -653,8 +653,7 @@ static inline int __init alloc_dev_table(struct amd_iommu_pci_seg *pci_seg)
static inline void free_dev_table(struct amd_iommu_pci_seg *pci_seg)
{
- iommu_free_pages(pci_seg->dev_table,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->dev_table);
pci_seg->dev_table = NULL;
}
@@ -671,8 +670,7 @@ static inline int __init alloc_rlookup_table(struct amd_iommu_pci_seg *pci_seg)
static inline void free_rlookup_table(struct amd_iommu_pci_seg *pci_seg)
{
- iommu_free_pages(pci_seg->rlookup_table,
- get_order(pci_seg->rlookup_table_size));
+ iommu_free_pages(pci_seg->rlookup_table);
pci_seg->rlookup_table = NULL;
}
@@ -691,8 +689,7 @@ static inline int __init alloc_irq_lookup_table(struct amd_iommu_pci_seg *pci_se
static inline void free_irq_lookup_table(struct amd_iommu_pci_seg *pci_seg)
{
kmemleak_free(pci_seg->irq_lookup_table);
- iommu_free_pages(pci_seg->irq_lookup_table,
- get_order(pci_seg->rlookup_table_size));
+ iommu_free_pages(pci_seg->irq_lookup_table);
pci_seg->irq_lookup_table = NULL;
}
@@ -716,8 +713,7 @@ 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)
{
- iommu_free_pages(pci_seg->alias_table,
- get_order(pci_seg->alias_table_size));
+ iommu_free_pages(pci_seg->alias_table);
pci_seg->alias_table = NULL;
}
@@ -826,7 +822,7 @@ static void iommu_disable_command_buffer(struct amd_iommu *iommu)
static void __init free_command_buffer(struct amd_iommu *iommu)
{
- iommu_free_pages(iommu->cmd_buf, get_order(CMD_BUFFER_SIZE));
+ iommu_free_pages(iommu->cmd_buf);
}
void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu, gfp_t gfp,
@@ -838,7 +834,7 @@ void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu, gfp_t gfp,
if (buf &&
check_feature(FEATURE_SNP) &&
set_memory_4k((unsigned long)buf, (1 << order))) {
- iommu_free_pages(buf, order);
+ iommu_free_pages(buf);
buf = NULL;
}
@@ -882,14 +878,14 @@ static void iommu_disable_event_buffer(struct amd_iommu *iommu)
static void __init free_event_buffer(struct amd_iommu *iommu)
{
- iommu_free_pages(iommu->evt_buf, get_order(EVT_BUFFER_SIZE));
+ iommu_free_pages(iommu->evt_buf);
}
static void free_ga_log(struct amd_iommu *iommu)
{
#ifdef CONFIG_IRQ_REMAP
- iommu_free_pages(iommu->ga_log, get_order(GA_LOG_SIZE));
- iommu_free_pages(iommu->ga_log_tail, get_order(8));
+ iommu_free_pages(iommu->ga_log);
+ iommu_free_pages(iommu->ga_log_tail);
#endif
}
@@ -2781,8 +2777,7 @@ static void early_enable_iommus(void)
for_each_pci_segment(pci_seg) {
if (pci_seg->old_dev_tbl_cpy != NULL) {
- iommu_free_pages(pci_seg->old_dev_tbl_cpy,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->old_dev_tbl_cpy);
pci_seg->old_dev_tbl_cpy = NULL;
}
}
@@ -2795,8 +2790,7 @@ static void early_enable_iommus(void)
pr_info("Copied DEV table from previous kernel.\n");
for_each_pci_segment(pci_seg) {
- iommu_free_pages(pci_seg->dev_table,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->dev_table);
pci_seg->dev_table = pci_seg->old_dev_tbl_cpy;
}
@@ -48,7 +48,7 @@ void amd_iommu_enable_ppr_log(struct amd_iommu *iommu)
void __init amd_iommu_free_ppr_log(struct amd_iommu *iommu)
{
- iommu_free_pages(iommu->ppr_log, get_order(PPR_LOG_SIZE));
+ iommu_free_pages(iommu->ppr_log);
}
/*
@@ -932,9 +932,9 @@ static struct iommu_domain *exynos_iommu_domain_alloc_paging(struct device *dev)
return &domain->domain;
err_lv2ent:
- iommu_free_pages(domain->lv2entcnt, 1);
+ iommu_free_pages(domain->lv2entcnt);
err_counter:
- iommu_free_pages(domain->pgtable, 2);
+ iommu_free_pages(domain->pgtable);
err_pgtable:
kfree(domain);
return NULL;
@@ -975,8 +975,8 @@ static void exynos_iommu_domain_free(struct iommu_domain *iommu_domain)
phys_to_virt(base));
}
- iommu_free_pages(domain->pgtable, 2);
- iommu_free_pages(domain->lv2entcnt, 1);
+ iommu_free_pages(domain->pgtable);
+ iommu_free_pages(domain->lv2entcnt);
kfree(domain);
}
@@ -620,7 +620,7 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
out_free_bitmap:
bitmap_free(bitmap);
out_free_pages:
- iommu_free_pages(ir_table_base, INTR_REMAP_PAGE_ORDER);
+ iommu_free_pages(ir_table_base);
out_free_table:
kfree(ir_table);
@@ -641,7 +641,7 @@ static void intel_teardown_irq_remapping(struct intel_iommu *iommu)
irq_domain_free_fwnode(fn);
iommu->ir_domain = NULL;
}
- iommu_free_pages(iommu->ir_table->base, INTR_REMAP_PAGE_ORDER);
+ iommu_free_pages(iommu->ir_table->base);
bitmap_free(iommu->ir_table->bitmap);
kfree(iommu->ir_table);
iommu->ir_table = NULL;
@@ -67,7 +67,6 @@ int intel_pasid_alloc_table(struct device *dev)
}
pasid_table->table = dir;
- pasid_table->order = order;
pasid_table->max_pasid = 1 << (order + PAGE_SHIFT + 3);
info->pasid_table = pasid_table;
@@ -100,7 +99,7 @@ void intel_pasid_free_table(struct device *dev)
iommu_free_page(table);
}
- iommu_free_pages(pasid_table->table, pasid_table->order);
+ iommu_free_pages(pasid_table->table);
kfree(pasid_table);
}
@@ -47,7 +47,6 @@ struct pasid_entry {
/* The representative of a PASID table */
struct pasid_table {
void *table; /* pasid table pointer */
- int order; /* page order of pasid table */
u32 max_pasid; /* max pasid */
};
@@ -338,7 +338,7 @@ int intel_iommu_enable_prq(struct intel_iommu *iommu)
dmar_free_hwirq(irq);
iommu->pr_irq = 0;
free_prq:
- iommu_free_pages(iommu->prq, PRQ_ORDER);
+ iommu_free_pages(iommu->prq);
iommu->prq = NULL;
return ret;
@@ -361,7 +361,7 @@ int intel_iommu_finish_prq(struct intel_iommu *iommu)
iommu->iopf_queue = NULL;
}
- iommu_free_pages(iommu->prq, PRQ_ORDER);
+ iommu_free_pages(iommu->prq);
iommu->prq = NULL;
return 0;
@@ -300,7 +300,7 @@ static void *__arm_lpae_alloc_pages(size_t size, gfp_t gfp,
if (cfg->free)
cfg->free(cookie, pages, size);
else
- iommu_free_pages(pages, order);
+ iommu_free_pages(pages);
return NULL;
}
@@ -316,7 +316,7 @@ static void __arm_lpae_free_pages(void *pages, size_t size,
if (cfg->free)
cfg->free(cookie, pages, size);
else
- iommu_free_pages(pages, get_order(size));
+ iommu_free_pages(pages);
}
static void __arm_lpae_sync_pte(arm_lpae_iopte *ptep, int num_entries,
@@ -262,7 +262,7 @@ static int dart_map_pages(struct io_pgtable_ops *ops, unsigned long iova,
pte = dart_install_table(cptep, ptep, 0, data);
if (pte)
- iommu_free_pages(cptep, get_order(tblsz));
+ iommu_free_pages(cptep);
/* L2 table is present (now) */
pte = READ_ONCE(*ptep);
@@ -423,8 +423,7 @@ apple_dart_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie)
out_free_data:
while (--i >= 0) {
- iommu_free_pages(data->pgd[i],
- get_order(DART_GRANULE(data)));
+ iommu_free_pages(data->pgd[i]);
}
kfree(data);
return NULL;
@@ -433,7 +432,6 @@ apple_dart_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie)
static void apple_dart_free_pgtable(struct io_pgtable *iop)
{
struct dart_io_pgtable *data = io_pgtable_to_data(iop);
- int order = get_order(DART_GRANULE(data));
dart_iopte *ptep, *end;
int i;
@@ -445,9 +443,9 @@ static void apple_dart_free_pgtable(struct io_pgtable *iop)
dart_iopte pte = *ptep++;
if (pte)
- iommu_free_pages(iopte_deref(pte, data), order);
+ iommu_free_pages(iopte_deref(pte, data));
}
- iommu_free_pages(data->pgd[i], order);
+ iommu_free_pages(data->pgd[i]);
}
kfree(data);
@@ -105,11 +105,12 @@ static inline void *iommu_alloc_page(gfp_t gfp)
}
/**
- * iommu_free_pages - free page of a given order
+ * iommu_free_pages - free pages
* @virt: virtual address of the page to be freed.
- * @order: page order
+ *
+ * The page must have have been allocated by iommu_alloc_pages_node()
*/
-static inline void iommu_free_pages(void *virt, int order)
+static inline void iommu_free_pages(void *virt)
{
struct page *page;
@@ -127,7 +128,7 @@ static inline void iommu_free_pages(void *virt, int order)
*/
static inline void iommu_free_page(void *virt)
{
- iommu_free_pages(virt, 0);
+ iommu_free_pages(virt);
}
/**
@@ -48,14 +48,13 @@ static DEFINE_IDA(riscv_iommu_pscids);
/* Device resource-managed allocations */
struct riscv_iommu_devres {
void *addr;
- int order;
};
static void riscv_iommu_devres_pages_release(struct device *dev, void *res)
{
struct riscv_iommu_devres *devres = res;
- iommu_free_pages(devres->addr, devres->order);
+ iommu_free_pages(devres->addr);
}
static int riscv_iommu_devres_pages_match(struct device *dev, void *res, void *p)
@@ -80,12 +79,11 @@ static void *riscv_iommu_get_pages(struct riscv_iommu_device *iommu, int order)
sizeof(struct riscv_iommu_devres), GFP_KERNEL);
if (unlikely(!devres)) {
- iommu_free_pages(addr, order);
+ iommu_free_pages(addr);
return NULL;
}
devres->addr = addr;
- devres->order = order;
devres_add(iommu->dev, devres);
@@ -713,7 +713,7 @@ static void sun50i_iommu_domain_free(struct iommu_domain *domain)
{
struct sun50i_iommu_domain *sun50i_domain = to_sun50i_domain(domain);
- iommu_free_pages(sun50i_domain->dt, get_order(DT_SIZE));
+ iommu_free_pages(sun50i_domain->dt);
sun50i_domain->dt = NULL;
kfree(sun50i_domain);
Now that we have a folio under the allocation iommu_free_pages() can know the order of the original allocation and do the correct thing to free it. The next patch will rename iommu_free_page() to iommu_free_pages() so we have naming consistency with iommu_alloc_pages_node(). Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> --- drivers/iommu/amd/init.c | 28 +++++++++++----------------- drivers/iommu/amd/ppr.c | 2 +- drivers/iommu/exynos-iommu.c | 8 ++++---- drivers/iommu/intel/irq_remapping.c | 4 ++-- drivers/iommu/intel/pasid.c | 3 +-- drivers/iommu/intel/pasid.h | 1 - drivers/iommu/intel/prq.c | 4 ++-- drivers/iommu/io-pgtable-arm.c | 4 ++-- drivers/iommu/io-pgtable-dart.c | 10 ++++------ drivers/iommu/iommu-pages.h | 9 +++++---- drivers/iommu/riscv/iommu.c | 6 ++---- drivers/iommu/sun50i-iommu.c | 2 +- 12 files changed, 35 insertions(+), 46 deletions(-)