The patch titled
Subject: loongarch: drop definition of PGD_ORDER
has been added to the -mm mm-unstable branch. Its filename is
loongarch-drop-definition-of-pgd_order.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/loongarch-drop-definition-of-pgd_order.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: loongarch: drop definition of PGD_ORDER
Date: Sun, 3 Jul 2022 17:12:01 +0300
This is the order of the page table allocation, not the order of a PGD.
Since its always hardwired to 0, simply drop it.
Link: https://lkml.kernel.org/r/20220703141203.147893-13-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Guo Ren <guoren@xxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Xuerui Wang <kernel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/include/asm/pgtable.h | 6 ++----
arch/loongarch/kernel/asm-offsets.c | 1 -
arch/loongarch/mm/pgtable.c | 2 +-
3 files changed, 3 insertions(+), 6 deletions(-)
--- a/arch/loongarch/include/asm/pgtable.h~loongarch-drop-definition-of-pgd_order
+++ a/arch/loongarch/include/asm/pgtable.h
@@ -21,8 +21,6 @@
#include <asm-generic/pgtable-nop4d.h>
#endif
-#define PGD_ORDER 0
-
#if CONFIG_PGTABLE_LEVELS == 2
#define PGDIR_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3))
#elif CONFIG_PGTABLE_LEVELS == 3
@@ -43,9 +41,9 @@
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
-#define VA_BITS (PGDIR_SHIFT + (PAGE_SHIFT + PGD_ORDER - 3))
+#define VA_BITS (PGDIR_SHIFT + (PAGE_SHIFT - 3))
-#define PTRS_PER_PGD ((PAGE_SIZE << PGD_ORDER) >> 3)
+#define PTRS_PER_PGD (PAGE_SIZE >> 3)
#if CONFIG_PGTABLE_LEVELS > 3
#define PTRS_PER_PUD (PAGE_SIZE >> 3)
#endif
--- a/arch/loongarch/kernel/asm-offsets.c~loongarch-drop-definition-of-pgd_order
+++ a/arch/loongarch/kernel/asm-offsets.c
@@ -190,7 +190,6 @@ void output_mm_defines(void)
#endif
DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
BLANK();
- DEFINE(_PGD_ORDER, PGD_ORDER);
BLANK();
DEFINE(_PMD_SHIFT, PMD_SHIFT);
DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
--- a/arch/loongarch/mm/pgtable.c~loongarch-drop-definition-of-pgd_order
+++ a/arch/loongarch/mm/pgtable.c
@@ -13,7 +13,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret, *init;
- ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
+ ret = (pgd_t *) __get_free_page(GFP_KERNEL);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
csky-drop-definition-of-pte_order.patch
csky-drop-definition-of-pgd_order.patch
mips-rename-pud_order-to-pud_table_order.patch
mips-drop-definitions-of-pte_order.patch
mips-rename-pgd_order-to-pgd_table_order.patch
nios2-drop-definition-of-pte_order.patch
nios2-drop-definition-of-pgd_order.patch
loongarch-drop-definition-of-pte_order.patch
loongarch-drop-definition-of-pmd_order.patch
loongarch-drop-definition-of-pud_order.patch
loongarch-drop-definition-of-pgd_order.patch
parisc-rename-pgd_order-to-pgd_table_order.patch
xtensa-drop-definition-of-pgd_order.patch
