[PATCH v5 1/3] arm64: mmu: introduce pgtable_alloc_t
From: Yeoreum Yun <hidden>
Date: 2026-01-05 20:23:36
Also in:
linux-rt-devel, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
This is preparation patch to use preallocated page tables for linear_map_split_to_ptes(). Define pgtable_alloc_t type for callback used by create_XXX_mapping(). Signed-off-by: Yeoreum Yun <redacted> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> --- arch/arm64/mm/mmu.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 8e1d80a7033e..4b4908ae189b 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c@@ -74,6 +74,8 @@ EXPORT_SYMBOL(empty_zero_page); static DEFINE_SPINLOCK(swapper_pgdir_lock); static DEFINE_MUTEX(fixmap_lock); +typedef phys_addr_t (pgtable_alloc_t)(enum pgtable_type); + void noinstr set_swapper_pgd(pgd_t *pgdp, pgd_t pgd) { pgd_t *fixmap_pgdp;
@@ -197,7 +199,7 @@ static void init_pte(pte_t *ptep, unsigned long addr, unsigned long end, static int alloc_init_cont_pte(pmd_t *pmdp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { unsigned long next;
@@ -252,7 +254,7 @@ static int alloc_init_cont_pte(pmd_t *pmdp, unsigned long addr, static int init_pmd(pmd_t *pmdp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), int flags) + pgtable_alloc_t pgtable_alloc, int flags) { unsigned long next;
@@ -292,7 +294,7 @@ static int init_pmd(pmd_t *pmdp, unsigned long addr, unsigned long end, static int alloc_init_cont_pmd(pud_t *pudp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret;
@@ -349,7 +351,7 @@ static int alloc_init_cont_pmd(pud_t *pudp, unsigned long addr, static int alloc_init_pud(p4d_t *p4dp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret = 0;
@@ -415,7 +417,7 @@ static int alloc_init_pud(p4d_t *p4dp, unsigned long addr, unsigned long end, static int alloc_init_p4d(pgd_t *pgdp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret;
@@ -467,7 +469,7 @@ static int alloc_init_p4d(pgd_t *pgdp, unsigned long addr, unsigned long end, static int __create_pgd_mapping_locked(pgd_t *pgdir, phys_addr_t phys, unsigned long virt, phys_addr_t size, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret;
@@ -500,7 +502,7 @@ static int __create_pgd_mapping_locked(pgd_t *pgdir, phys_addr_t phys, static int __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys, unsigned long virt, phys_addr_t size, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret;
@@ -516,7 +518,7 @@ static int __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys, static void early_create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys, unsigned long virt, phys_addr_t size, pgprot_t prot, - phys_addr_t (*pgtable_alloc)(enum pgtable_type), + pgtable_alloc_t pgtable_alloc, int flags) { int ret;
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}