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Message-ID: <20240222173942.1481394-4-pasha.tatashin@soleen.com>
Date: Thu, 22 Feb 2024 17:39:29 +0000
From: Pasha Tatashin <pasha.tatashin@...een.com>
To: akpm@...ux-foundation.org,
alim.akhtar@...sung.com,
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Subject: [PATCH v5 03/11] iommu/amd: use page allocation function provided by iommu-pages.h
Convert iommu/amd/* files to use the new page allocation functions
provided in iommu-pages.h.
Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
Acked-by: David Rientjes <rientjes@...gle.com>
Tested-by: Bagas Sanjaya <bagasdotme@...il.com>
---
drivers/iommu/amd/amd_iommu.h | 8 ---
drivers/iommu/amd/init.c | 91 ++++++++++++++-----------------
drivers/iommu/amd/io_pgtable.c | 13 +++--
drivers/iommu/amd/io_pgtable_v2.c | 20 +++----
drivers/iommu/amd/iommu.c | 13 +++--
5 files changed, 64 insertions(+), 81 deletions(-)
diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index 8b3601f285fd..9270c820a2ab 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -142,14 +142,6 @@ static inline int get_pci_sbdf_id(struct pci_dev *pdev)
return PCI_SEG_DEVID_TO_SBDF(seg, devid);
}
-static inline void *alloc_pgtable_page(int nid, gfp_t gfp)
-{
- struct page *page;
-
- page = alloc_pages_node(nid, gfp | __GFP_ZERO, 0);
- return page ? page_address(page) : NULL;
-}
-
bool translation_pre_enabled(struct amd_iommu *iommu);
bool amd_iommu_is_attach_deferred(struct device *dev);
int __init add_special_device(u8 type, u8 id, u32 *devid, bool cmd_line);
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index c83bd0c2a1c9..239ddf46426f 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -35,6 +35,7 @@
#include "amd_iommu.h"
#include "../irq_remapping.h"
+#include "../iommu-pages.h"
/*
* definitions for the ACPI scanning code
@@ -648,8 +649,8 @@ static int __init find_last_devid_acpi(struct acpi_table_header *table, u16 pci_
/* Allocate per PCI segment device table */
static inline int __init alloc_dev_table(struct amd_iommu_pci_seg *pci_seg)
{
- pci_seg->dev_table = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO | GFP_DMA32,
- get_order(pci_seg->dev_table_size));
+ pci_seg->dev_table = iommu_alloc_pages(GFP_KERNEL | GFP_DMA32,
+ get_order(pci_seg->dev_table_size));
if (!pci_seg->dev_table)
return -ENOMEM;
@@ -658,17 +659,16 @@ 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)
{
- free_pages((unsigned long)pci_seg->dev_table,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->dev_table,
+ get_order(pci_seg->dev_table_size));
pci_seg->dev_table = NULL;
}
/* Allocate per PCI segment IOMMU rlookup table. */
static inline int __init alloc_rlookup_table(struct amd_iommu_pci_seg *pci_seg)
{
- pci_seg->rlookup_table = (void *)__get_free_pages(
- GFP_KERNEL | __GFP_ZERO,
- get_order(pci_seg->rlookup_table_size));
+ pci_seg->rlookup_table = iommu_alloc_pages(GFP_KERNEL,
+ get_order(pci_seg->rlookup_table_size));
if (pci_seg->rlookup_table == NULL)
return -ENOMEM;
@@ -677,16 +677,15 @@ 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)
{
- free_pages((unsigned long)pci_seg->rlookup_table,
- get_order(pci_seg->rlookup_table_size));
+ iommu_free_pages(pci_seg->rlookup_table,
+ get_order(pci_seg->rlookup_table_size));
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(pci_seg->rlookup_table_size));
+ pci_seg->irq_lookup_table = iommu_alloc_pages(GFP_KERNEL,
+ get_order(pci_seg->rlookup_table_size));
kmemleak_alloc(pci_seg->irq_lookup_table,
pci_seg->rlookup_table_size, 1, GFP_KERNEL);
if (pci_seg->irq_lookup_table == NULL)
@@ -698,8 +697,8 @@ 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);
- free_pages((unsigned long)pci_seg->irq_lookup_table,
- get_order(pci_seg->rlookup_table_size));
+ iommu_free_pages(pci_seg->irq_lookup_table,
+ get_order(pci_seg->rlookup_table_size));
pci_seg->irq_lookup_table = NULL;
}
@@ -707,8 +706,8 @@ 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(pci_seg->alias_table_size));
+ pci_seg->alias_table = iommu_alloc_pages(GFP_KERNEL,
+ get_order(pci_seg->alias_table_size));
if (!pci_seg->alias_table)
return -ENOMEM;
@@ -723,8 +722,8 @@ 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(pci_seg->alias_table_size));
+ iommu_free_pages(pci_seg->alias_table,
+ get_order(pci_seg->alias_table_size));
pci_seg->alias_table = NULL;
}
@@ -735,8 +734,8 @@ static void __init free_alias_table(struct amd_iommu_pci_seg *pci_seg)
*/
static int __init alloc_command_buffer(struct amd_iommu *iommu)
{
- iommu->cmd_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
- get_order(CMD_BUFFER_SIZE));
+ iommu->cmd_buf = iommu_alloc_pages(GFP_KERNEL,
+ get_order(CMD_BUFFER_SIZE));
return iommu->cmd_buf ? 0 : -ENOMEM;
}
@@ -844,19 +843,19 @@ static void iommu_disable_command_buffer(struct amd_iommu *iommu)
static void __init free_command_buffer(struct amd_iommu *iommu)
{
- free_pages((unsigned long)iommu->cmd_buf, get_order(CMD_BUFFER_SIZE));
+ iommu_free_pages(iommu->cmd_buf, get_order(CMD_BUFFER_SIZE));
}
static void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu,
gfp_t gfp, size_t size)
{
int order = get_order(size);
- void *buf = (void *)__get_free_pages(gfp, order);
+ void *buf = iommu_alloc_pages(gfp, order);
if (buf &&
check_feature(FEATURE_SNP) &&
set_memory_4k((unsigned long)buf, (1 << order))) {
- free_pages((unsigned long)buf, order);
+ iommu_free_pages(buf, order);
buf = NULL;
}
@@ -866,7 +865,7 @@ static void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu,
/* allocates the memory where the IOMMU will log its events to */
static int __init alloc_event_buffer(struct amd_iommu *iommu)
{
- iommu->evt_buf = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO,
+ iommu->evt_buf = iommu_alloc_4k_pages(iommu, GFP_KERNEL,
EVT_BUFFER_SIZE);
return iommu->evt_buf ? 0 : -ENOMEM;
@@ -900,14 +899,13 @@ static void iommu_disable_event_buffer(struct amd_iommu *iommu)
static void __init free_event_buffer(struct amd_iommu *iommu)
{
- free_pages((unsigned long)iommu->evt_buf, get_order(EVT_BUFFER_SIZE));
+ iommu_free_pages(iommu->evt_buf, get_order(EVT_BUFFER_SIZE));
}
/* allocates the memory where the IOMMU will log its events to */
static int __init alloc_ppr_log(struct amd_iommu *iommu)
{
- iommu->ppr_log = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO,
- PPR_LOG_SIZE);
+ iommu->ppr_log = iommu_alloc_4k_pages(iommu, GFP_KERNEL, PPR_LOG_SIZE);
return iommu->ppr_log ? 0 : -ENOMEM;
}
@@ -936,14 +934,14 @@ static void iommu_enable_ppr_log(struct amd_iommu *iommu)
static void __init free_ppr_log(struct amd_iommu *iommu)
{
- free_pages((unsigned long)iommu->ppr_log, get_order(PPR_LOG_SIZE));
+ iommu_free_pages(iommu->ppr_log, get_order(PPR_LOG_SIZE));
}
static void free_ga_log(struct amd_iommu *iommu)
{
#ifdef CONFIG_IRQ_REMAP
- free_pages((unsigned long)iommu->ga_log, get_order(GA_LOG_SIZE));
- free_pages((unsigned long)iommu->ga_log_tail, get_order(8));
+ iommu_free_pages(iommu->ga_log, get_order(GA_LOG_SIZE));
+ iommu_free_pages(iommu->ga_log_tail, get_order(8));
#endif
}
@@ -988,13 +986,11 @@ static int iommu_init_ga_log(struct amd_iommu *iommu)
if (!AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir))
return 0;
- iommu->ga_log = (u8 *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
- get_order(GA_LOG_SIZE));
+ iommu->ga_log = iommu_alloc_pages(GFP_KERNEL, get_order(GA_LOG_SIZE));
if (!iommu->ga_log)
goto err_out;
- iommu->ga_log_tail = (u8 *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
- get_order(8));
+ iommu->ga_log_tail = iommu_alloc_pages(GFP_KERNEL, get_order(8));
if (!iommu->ga_log_tail)
goto err_out;
@@ -1007,7 +1003,7 @@ static int iommu_init_ga_log(struct amd_iommu *iommu)
static int __init alloc_cwwb_sem(struct amd_iommu *iommu)
{
- iommu->cmd_sem = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO, 1);
+ iommu->cmd_sem = iommu_alloc_4k_pages(iommu, GFP_KERNEL, 1);
return iommu->cmd_sem ? 0 : -ENOMEM;
}
@@ -1015,7 +1011,7 @@ static int __init alloc_cwwb_sem(struct amd_iommu *iommu)
static void __init free_cwwb_sem(struct amd_iommu *iommu)
{
if (iommu->cmd_sem)
- free_page((unsigned long)iommu->cmd_sem);
+ iommu_free_page((void *)iommu->cmd_sem);
}
static void iommu_enable_xt(struct amd_iommu *iommu)
@@ -1080,7 +1076,6 @@ static bool __copy_device_table(struct amd_iommu *iommu)
u32 lo, hi, devid, old_devtb_size;
phys_addr_t old_devtb_phys;
u16 dom_id, dte_v, irq_v;
- gfp_t gfp_flag;
u64 tmp;
/* Each IOMMU use separate device table with the same size */
@@ -1114,9 +1109,8 @@ static bool __copy_device_table(struct amd_iommu *iommu)
if (!old_devtb)
return false;
- gfp_flag = GFP_KERNEL | __GFP_ZERO | GFP_DMA32;
- pci_seg->old_dev_tbl_cpy = (void *)__get_free_pages(gfp_flag,
- get_order(pci_seg->dev_table_size));
+ pci_seg->old_dev_tbl_cpy = iommu_alloc_pages(GFP_KERNEL | GFP_DMA32,
+ get_order(pci_seg->dev_table_size));
if (pci_seg->old_dev_tbl_cpy == NULL) {
pr_err("Failed to allocate memory for copying old device table!\n");
memunmap(old_devtb);
@@ -2800,8 +2794,8 @@ static void early_enable_iommus(void)
for_each_pci_segment(pci_seg) {
if (pci_seg->old_dev_tbl_cpy != NULL) {
- free_pages((unsigned long)pci_seg->old_dev_tbl_cpy,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->old_dev_tbl_cpy,
+ get_order(pci_seg->dev_table_size));
pci_seg->old_dev_tbl_cpy = NULL;
}
}
@@ -2814,8 +2808,8 @@ static void early_enable_iommus(void)
pr_info("Copied DEV table from previous kernel.\n");
for_each_pci_segment(pci_seg) {
- free_pages((unsigned long)pci_seg->dev_table,
- get_order(pci_seg->dev_table_size));
+ iommu_free_pages(pci_seg->dev_table,
+ get_order(pci_seg->dev_table_size));
pci_seg->dev_table = pci_seg->old_dev_tbl_cpy;
}
@@ -3018,8 +3012,8 @@ static bool __init check_ioapic_information(void)
static void __init free_dma_resources(void)
{
- free_pages((unsigned long)amd_iommu_pd_alloc_bitmap,
- get_order(MAX_DOMAIN_ID/8));
+ iommu_free_pages(amd_iommu_pd_alloc_bitmap,
+ get_order(MAX_DOMAIN_ID / 8));
amd_iommu_pd_alloc_bitmap = NULL;
free_unity_maps();
@@ -3091,9 +3085,8 @@ static int __init early_amd_iommu_init(void)
/* Device table - directly used by all IOMMUs */
ret = -ENOMEM;
- amd_iommu_pd_alloc_bitmap = (void *)__get_free_pages(
- GFP_KERNEL | __GFP_ZERO,
- get_order(MAX_DOMAIN_ID/8));
+ amd_iommu_pd_alloc_bitmap = iommu_alloc_pages(GFP_KERNEL,
+ get_order(MAX_DOMAIN_ID / 8));
if (amd_iommu_pd_alloc_bitmap == NULL)
goto out;
diff --git a/drivers/iommu/amd/io_pgtable.c b/drivers/iommu/amd/io_pgtable.c
index 2a0d1e97e52f..9d9a7fde59e7 100644
--- a/drivers/iommu/amd/io_pgtable.c
+++ b/drivers/iommu/amd/io_pgtable.c
@@ -22,6 +22,7 @@
#include "amd_iommu_types.h"
#include "amd_iommu.h"
+#include "../iommu-pages.h"
static void v1_tlb_flush_all(void *cookie)
{
@@ -156,7 +157,7 @@ static bool increase_address_space(struct protection_domain *domain,
bool ret = true;
u64 *pte;
- pte = alloc_pgtable_page(domain->nid, gfp);
+ pte = iommu_alloc_page_node(domain->nid, gfp);
if (!pte)
return false;
@@ -187,7 +188,7 @@ static bool increase_address_space(struct protection_domain *domain,
out:
spin_unlock_irqrestore(&domain->lock, flags);
- free_page((unsigned long)pte);
+ iommu_free_page(pte);
return ret;
}
@@ -250,7 +251,7 @@ static u64 *alloc_pte(struct protection_domain *domain,
if (!IOMMU_PTE_PRESENT(__pte) ||
pte_level == PAGE_MODE_NONE) {
- page = alloc_pgtable_page(domain->nid, gfp);
+ page = iommu_alloc_page_node(domain->nid, gfp);
if (!page)
return NULL;
@@ -259,7 +260,7 @@ static u64 *alloc_pte(struct protection_domain *domain,
/* pte could have been changed somewhere. */
if (!try_cmpxchg64(pte, &__pte, __npte))
- free_page((unsigned long)page);
+ iommu_free_page(page);
else if (IOMMU_PTE_PRESENT(__pte))
*updated = true;
@@ -431,7 +432,7 @@ static int iommu_v1_map_pages(struct io_pgtable_ops *ops, unsigned long iova,
}
/* Everything flushed out, free pages now */
- put_pages_list(&freelist);
+ iommu_put_pages_list(&freelist);
return ret;
}
@@ -580,7 +581,7 @@ static void v1_free_pgtable(struct io_pgtable *iop)
/* Make changes visible to IOMMUs */
amd_iommu_domain_update(dom);
- put_pages_list(&freelist);
+ iommu_put_pages_list(&freelist);
}
static struct io_pgtable *v1_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie)
diff --git a/drivers/iommu/amd/io_pgtable_v2.c b/drivers/iommu/amd/io_pgtable_v2.c
index 6d69ba60744f..477371b1ed54 100644
--- a/drivers/iommu/amd/io_pgtable_v2.c
+++ b/drivers/iommu/amd/io_pgtable_v2.c
@@ -18,6 +18,7 @@
#include "amd_iommu_types.h"
#include "amd_iommu.h"
+#include "../iommu-pages.h"
#define IOMMU_PAGE_PRESENT BIT_ULL(0) /* Is present */
#define IOMMU_PAGE_RW BIT_ULL(1) /* Writeable */
@@ -99,11 +100,6 @@ static inline int page_size_to_level(u64 pg_size)
return PAGE_MODE_1_LEVEL;
}
-static inline void free_pgtable_page(u64 *pt)
-{
- free_page((unsigned long)pt);
-}
-
static void free_pgtable(u64 *pt, int level)
{
u64 *p;
@@ -125,10 +121,10 @@ static void free_pgtable(u64 *pt, int level)
if (level > 2)
free_pgtable(p, level - 1);
else
- free_pgtable_page(p);
+ iommu_free_page(p);
}
- free_pgtable_page(pt);
+ iommu_free_page(pt);
}
/* Allocate page table */
@@ -156,14 +152,14 @@ static u64 *v2_alloc_pte(int nid, u64 *pgd, unsigned long iova,
}
if (!IOMMU_PTE_PRESENT(__pte)) {
- page = alloc_pgtable_page(nid, gfp);
+ page = iommu_alloc_page_node(nid, gfp);
if (!page)
return NULL;
__npte = set_pgtable_attr(page);
/* pte could have been changed somewhere. */
if (cmpxchg64(pte, __pte, __npte) != __pte)
- free_pgtable_page(page);
+ iommu_free_page(page);
else if (IOMMU_PTE_PRESENT(__pte))
*updated = true;
@@ -185,7 +181,7 @@ static u64 *v2_alloc_pte(int nid, u64 *pgd, unsigned long iova,
if (pg_size == IOMMU_PAGE_SIZE_1G)
free_pgtable(__pte, end_level - 1);
else if (pg_size == IOMMU_PAGE_SIZE_2M)
- free_pgtable_page(__pte);
+ iommu_free_page(__pte);
}
return pte;
@@ -374,7 +370,7 @@ static struct io_pgtable *v2_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo
int ret;
int ias = IOMMU_IN_ADDR_BIT_SIZE;
- pgtable->pgd = alloc_pgtable_page(pdom->nid, GFP_ATOMIC);
+ pgtable->pgd = iommu_alloc_page_node(pdom->nid, GFP_ATOMIC);
if (!pgtable->pgd)
return NULL;
@@ -397,7 +393,7 @@ static struct io_pgtable *v2_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo
return &pgtable->iop;
err_free_pgd:
- free_pgtable_page(pgtable->pgd);
+ iommu_free_page(pgtable->pgd);
return NULL;
}
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 4283dd8191f0..0c7bd09ab617 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -42,6 +42,7 @@
#include "amd_iommu.h"
#include "../dma-iommu.h"
#include "../irq_remapping.h"
+#include "../iommu-pages.h"
#define CMD_SET_TYPE(cmd, t) ((cmd)->data[1] |= ((t) << 28))
@@ -1637,7 +1638,7 @@ static void free_gcr3_tbl_level1(u64 *tbl)
ptr = iommu_phys_to_virt(tbl[i] & PAGE_MASK);
- free_page((unsigned long)ptr);
+ iommu_free_page(ptr);
}
}
@@ -1665,7 +1666,7 @@ static void free_gcr3_table(struct protection_domain *domain)
else
BUG_ON(domain->glx != 0);
- free_page((unsigned long)domain->gcr3_tbl);
+ iommu_free_page(domain->gcr3_tbl);
}
/*
@@ -1692,7 +1693,7 @@ static int setup_gcr3_table(struct protection_domain *domain, int pasids)
if (levels > amd_iommu_max_glx_val)
return -EINVAL;
- domain->gcr3_tbl = alloc_pgtable_page(domain->nid, GFP_ATOMIC);
+ domain->gcr3_tbl = iommu_alloc_page_node(domain->nid, GFP_ATOMIC);
if (domain->gcr3_tbl == NULL)
return -ENOMEM;
@@ -2074,7 +2075,7 @@ static void protection_domain_free(struct protection_domain *domain)
free_gcr3_table(domain);
if (domain->iop.root)
- free_page((unsigned long)domain->iop.root);
+ iommu_free_page(domain->iop.root);
if (domain->id)
domain_id_free(domain->id);
@@ -2089,7 +2090,7 @@ static int protection_domain_init_v1(struct protection_domain *domain, int mode)
BUG_ON(mode < PAGE_MODE_NONE || mode > PAGE_MODE_6_LEVEL);
if (mode != PAGE_MODE_NONE) {
- pt_root = (void *)get_zeroed_page(GFP_KERNEL);
+ pt_root = iommu_alloc_page(GFP_KERNEL);
if (!pt_root)
return -ENOMEM;
}
@@ -2762,7 +2763,7 @@ static u64 *__get_gcr3_pte(u64 *root, int level, u32 pasid, bool alloc)
if (!alloc)
return NULL;
- root = (void *)get_zeroed_page(GFP_ATOMIC);
+ root = iommu_alloc_page(GFP_ATOMIC);
if (root == NULL)
return NULL;
--
2.44.0.rc0.258.g7320e95886-goog
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