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authorCatalin Marinas <catalin.marinas@arm.com>2014-07-15 15:37:21 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2014-07-23 15:27:46 +0100
commitabe669d7e1a8f9163eb7e8e153e7257d38c1ba3e (patch)
tree58632fadf3e08f37407fb14193c00085e247dab8 /arch
parentc79b954bf6c006f2d3dd9d01f231abeead13a410 (diff)
downloadlinux-abe669d7e1a8f9163eb7e8e153e7257d38c1ba3e.tar.gz
arm64: Convert bool ARM64_x_LEVELS to int ARM64_PGTABLE_LEVELS
Rather than having several Kconfig options, define int ARM64_PGTABLE_LEVELS which will be also useful in converting some of the pgtable macros. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Jungseok Lee <jungseoklee85@gmail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/Kconfig13
-rw-r--r--arch/arm64/include/asm/page.h6
-rw-r--r--arch/arm64/include/asm/pgalloc.h8
-rw-r--r--arch/arm64/include/asm/pgtable-hwdef.h4
-rw-r--r--arch/arm64/include/asm/pgtable.h18
-rw-r--r--arch/arm64/include/asm/tlb.h4
-rw-r--r--arch/arm64/kernel/head.S2
-rw-r--r--arch/arm64/mm/ioremap.c4
8 files changed, 28 insertions, 31 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index cf07cc7295bb..8cdb7f36bfc8 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -207,14 +207,11 @@ config ARM64_VA_BITS
default 42 if ARM64_VA_BITS_42
default 48 if ARM64_VA_BITS_48
-config ARM64_2_LEVELS
- def_bool y if ARM64_64K_PAGES && ARM64_VA_BITS_42
-
-config ARM64_3_LEVELS
- def_bool y if ARM64_4K_PAGES && ARM64_VA_BITS_39
-
-config ARM64_4_LEVELS
- def_bool y if ARM64_4K_PAGES && ARM64_VA_BITS_48
+config ARM64_PGTABLE_LEVELS
+ int
+ default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
+ default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
+ default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h
index cf9afa0366b6..a998ff478777 100644
--- a/arch/arm64/include/asm/page.h
+++ b/arch/arm64/include/asm/page.h
@@ -37,7 +37,7 @@
* map the kernel. The swapper also maps the FDT (see __create_page_tables for
* more information).
*/
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS == 4
#define SWAPPER_DIR_SIZE (3 * PAGE_SIZE)
#define IDMAP_DIR_SIZE (3 * PAGE_SIZE)
#else
@@ -47,9 +47,9 @@
#ifndef __ASSEMBLY__
-#ifdef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS == 2
#include <asm/pgtable-2level-types.h>
-#elif defined(CONFIG_ARM64_3_LEVELS)
+#elif CONFIG_ARM64_PGTABLE_LEVELS == 3
#include <asm/pgtable-3level-types.h>
#else
#include <asm/pgtable-4level-types.h>
diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h
index 7deb5750a945..d5bed02073d6 100644
--- a/arch/arm64/include/asm/pgalloc.h
+++ b/arch/arm64/include/asm/pgalloc.h
@@ -26,7 +26,7 @@
#define check_pgt_cache() do { } while (0)
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
@@ -44,9 +44,9 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE));
}
-#endif /* CONFIG_ARM64_2_LEVELS */
+#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 2 */
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
@@ -64,7 +64,7 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
set_pgd(pgd, __pgd(__pa(pud) | PUD_TYPE_TABLE));
}
-#endif /* CONFIG_ARM64_4_LEVELS */
+#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 3 */
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
index fddcc3efa569..d453e8bfef06 100644
--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -16,9 +16,9 @@
#ifndef __ASM_PGTABLE_HWDEF_H
#define __ASM_PGTABLE_HWDEF_H
-#ifdef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS == 2
#include <asm/pgtable-2level-hwdef.h>
-#elif defined(CONFIG_ARM64_3_LEVELS)
+#elif CONFIG_ARM64_PGTABLE_LEVELS == 3
#include <asm/pgtable-3level-hwdef.h>
#else
#include <asm/pgtable-4level-hwdef.h>
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index d9b23efdaded..9f862e6e9286 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -35,7 +35,7 @@
* VMALLOC and SPARSEMEM_VMEMMAP ranges.
*/
#define VMALLOC_START (UL(0xffffffffffffffff) << VA_BITS)
-#ifndef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS != 4
#define VMALLOC_END (PAGE_OFFSET - UL(0x400000000) - SZ_64K)
#else
#define VMALLOC_END (PAGE_OFFSET - UL(0x40000000000) - SZ_64K)
@@ -52,10 +52,10 @@ extern void __pud_error(const char *file, int line, unsigned long val);
extern void __pgd_error(const char *file, int line, unsigned long val);
#define pte_ERROR(pte) __pte_error(__FILE__, __LINE__, pte_val(pte))
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd_val(pmd))
#endif
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#define pud_ERROR(pud) __pud_error(__FILE__, __LINE__, pud_val(pud))
#endif
#define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd))
@@ -331,7 +331,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
*/
#define mk_pte(page,prot) pfn_pte(page_to_pfn(page),prot)
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#define pud_none(pud) (!pud_val(pud))
#define pud_bad(pud) (!(pud_val(pud) & 2))
@@ -353,9 +353,9 @@ static inline pmd_t *pud_page_vaddr(pud_t pud)
return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK);
}
-#endif /* CONFIG_ARM64_2_LEVELS */
+#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 2 */
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#define pgd_none(pgd) (!pgd_val(pgd))
#define pgd_bad(pgd) (!(pgd_val(pgd) & 2))
@@ -377,7 +377,7 @@ static inline pud_t *pgd_page_vaddr(pgd_t pgd)
return __va(pgd_val(pgd) & PHYS_MASK & (s32)PAGE_MASK);
}
-#endif /* CONFIG_ARM64_4_LEVELS */
+#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 3 */
/* to find an entry in a page-table-directory */
#define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
@@ -387,7 +387,7 @@ static inline pud_t *pgd_page_vaddr(pgd_t pgd)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
static inline pud_t *pud_offset(pgd_t *pgd, unsigned long addr)
{
@@ -396,7 +396,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long addr)
#endif
/* Find an entry in the second-level page table.. */
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
{
diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h
index 49dc8f03362f..62731ef9749a 100644
--- a/arch/arm64/include/asm/tlb.h
+++ b/arch/arm64/include/asm/tlb.h
@@ -91,7 +91,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
tlb_remove_page(tlb, pte);
}
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
unsigned long addr)
{
@@ -100,7 +100,7 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
}
#endif
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
unsigned long addr)
{
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 847b99daad79..019f81d9f1d5 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -484,7 +484,7 @@ ENDPROC(__calc_phys_offset)
* Returns: pud
*/
.macro create_pud_entry, pgd, tbl, virt, pud, tmp1, tmp2
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS == 4
add \tbl, \tbl, #PAGE_SIZE // bump tbl 1 page up.
// to make room for pud
add \pud, \pgd, #PAGE_SIZE // pgd points to pud which
diff --git a/arch/arm64/mm/ioremap.c b/arch/arm64/mm/ioremap.c
index d5e969e7b576..fa324bd5a5c4 100644
--- a/arch/arm64/mm/ioremap.c
+++ b/arch/arm64/mm/ioremap.c
@@ -104,10 +104,10 @@ void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size)
EXPORT_SYMBOL(ioremap_cache);
static pte_t bm_pte[PTRS_PER_PTE] __page_aligned_bss;
-#ifndef CONFIG_ARM64_2_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 2
static pte_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss;
#endif
-#ifdef CONFIG_ARM64_4_LEVELS
+#if CONFIG_ARM64_PGTABLE_LEVELS > 3
static pte_t bm_pud[PTRS_PER_PUD] __page_aligned_bss;
#endif