[PATCH 06/13] mm/arm: Use macros to define pmd/pud helpers
From: peterx@redhat.com
Date: 2024-03-13 21:47:33
Also in:
linux-arm-kernel, linux-mm, lkml, sparclinux
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Peter Xu <peterx@redhat.com> It's already confusing that ARM 2-level v.s. 3-level defines SECT bit differently on pmd/puds. Always use a macro which is much clearer. Cc: Russell King <linux@armlinux.org.uk> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Krzysztof Kozlowski <redacted> Cc: Bjorn Andersson <andersson@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Konrad Dybcio <redacted> Cc: Fabio Estevam <redacted> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Peter Xu <peterx@redhat.com> --- arch/arm/include/asm/pgtable-2level.h | 4 ++-- arch/arm/include/asm/pgtable-3level-hwdef.h | 1 + arch/arm/include/asm/pgtable-3level.h | 4 ++-- 3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index b0a262566eb9..4245c2e74720 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h@@ -213,8 +213,8 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) #define pmd_pfn(pmd) (__phys_to_pfn(pmd_val(pmd) & PHYS_MASK)) -#define pmd_leaf(pmd) (pmd_val(pmd) & 2) -#define pmd_bad(pmd) (pmd_val(pmd) & 2) +#define pmd_leaf(pmd) (pmd_val(pmd) & PMD_TYPE_SECT) +#define pmd_bad(pmd) pmd_leaf(pmd) #define pmd_present(pmd) (pmd_val(pmd)) #define copy_pmd(pmdpd,pmdps) \
diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h
index 2f35b4eddaa8..e7b666cf0060 100644
--- a/arch/arm/include/asm/pgtable-3level-hwdef.h
+++ b/arch/arm/include/asm/pgtable-3level-hwdef.h@@ -14,6 +14,7 @@ * + Level 1/2 descriptor * - common */ +#define PUD_TABLE_BIT (_AT(pmdval_t, 1) << 1) #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0) #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0) #define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0)
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 4b1d9eb3908a..e7aecbef75c9 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h@@ -112,7 +112,7 @@ #ifndef __ASSEMBLY__ #define pud_none(pud) (!pud_val(pud)) -#define pud_bad(pud) (!(pud_val(pud) & 2)) +#define pud_bad(pud) (!(pud_val(pud) & PUD_TABLE_BIT)) #define pud_present(pud) (pud_val(pud)) #define pmd_table(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_TABLE)
@@ -137,7 +137,7 @@ static inline pmd_t *pud_pgtable(pud_t pud) return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK); } -#define pmd_bad(pmd) (!(pmd_val(pmd) & 2)) +#define pmd_bad(pmd) (!(pmd_val(pmd) & PMD_TABLE_BIT)) #define copy_pmd(pmdpd,pmdps) \ do { \
--
2.44.0