[RFC][PATCH 7/8] x86/mm: Remove duplicated PMD preallocation macro
From: Dave Hansen
Date: Thu Jan 23 2025 - 12:25:51 EST
From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
MAX_PREALLOCATED_PMDS and PREALLOCATED_PMDS are now identical. Just
use PREALLOCATED_PMDS and remove "MAX".
Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
---
b/arch/x86/mm/pgtable.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN arch/x86/mm/pgtable.c~simplify-PREALLOCATED_PMDS-4 arch/x86/mm/pgtable.c
--- a/arch/x86/mm/pgtable.c~simplify-PREALLOCATED_PMDS-4 2025-01-23 09:20:53.030432670 -0800
+++ b/arch/x86/mm/pgtable.c 2025-01-23 09:20:53.034432814 -0800
@@ -157,7 +157,6 @@ static void pgd_dtor(pgd_t *pgd)
* new process's life, we just pre-populate them here.
*/
#define PREALLOCATED_PMDS PTRS_PER_PGD
-#define MAX_PREALLOCATED_PMDS PTRS_PER_PGD
/*
* "USER_PMDS" are the PMDs for the user copy of the page tables when
@@ -193,7 +192,6 @@ void pud_populate(struct mm_struct *mm,
/* No need to prepopulate any pagetable entries in non-PAE modes. */
#define PREALLOCATED_PMDS 0
-#define MAX_PREALLOCATED_PMDS 0
#define PREALLOCATED_USER_PMDS 0
#define MAX_PREALLOCATED_USER_PMDS 0
#endif /* CONFIG_X86_PAE */
@@ -364,7 +362,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *pgd;
pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS];
- pmd_t *pmds[MAX_PREALLOCATED_PMDS];
+ pmd_t *pmds[PREALLOCATED_PMDS];
pgd = _pgd_alloc();
_