diff options
| author |   Arnd Bergmann <arnd@arndb.de> | 2025-02-26 22:37:11 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2025-02-27 11:22:06 +0100 |
| commit | 0081fdeccbf610499b79784998b1fd36783209dd (patch) | |
| tree | 7df57c9b0e308b230ba7c41496269e8fcc826d29 /arch/x86/mm/pgtable.c | |
| parent | x86/mm: Drop CONFIG_SWIOTLB for PAE (diff) | |
| download | wireguard-linux-0081fdeccbf610499b79784998b1fd36783209dd.tar.xz wireguard-linux-0081fdeccbf610499b79784998b1fd36783209dd.zip | |
x86/mm: Drop support for CONFIG_HIGHPTE
With the maximum amount of RAM now 4GB, there is very little point
to still have PTE pages in highmem. Drop this for simplification.
The only other architecture supporting HIGHPTE is 32-bit arm, and
once that feature is removed as well, the highpte logic can be
dropped from common code as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250226213714.4040853-8-arnd@kernel.org
Diffstat (limited to 'arch/x86/mm/pgtable.c')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index b1c1f72c1fd1..cec321fb74f2 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -12,35 +12,10 @@ phys_addr_t physical_mask __ro_after_init = (1ULL << __PHYSICAL_MASK_SHIFT) - 1; EXPORT_SYMBOL(physical_mask); #endif -#ifdef CONFIG_HIGHPTE -#define PGTABLE_HIGHMEM __GFP_HIGHMEM -#else -#define PGTABLE_HIGHMEM 0 -#endif - -gfp_t __userpte_alloc_gfp = GFP_PGTABLE_USER | PGTABLE_HIGHMEM; - pgtable_t pte_alloc_one(struct mm_struct *mm) { - return __pte_alloc_one(mm, __userpte_alloc_gfp); -} - -static int __init setup_userpte(char *arg) -{ - if (!arg) - return -EINVAL; - - /* - * "userpte=nohigh" disables allocation of user pagetables in - * high memory. - */ - if (strcmp(arg, "nohigh") == 0) - __userpte_alloc_gfp &= ~__GFP_HIGHMEM; - else - return -EINVAL; - return 0; + return __pte_alloc_one(mm, GFP_PGTABLE_USER); } -early_param("userpte", setup_userpte); void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) { |