From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-mm@kvack.org, Brian Cain <bcain@quicinc.com>,
linux-hexagon@vger.kernel.org, linux-arch@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: [PATCH 12/7] hexagon: Implement the new page table range API
Date: Wed, 15 Feb 2023 00:04:45 +0000 [thread overview]
Message-ID: <20230215000446.1655635-4-willy@infradead.org> (raw)
In-Reply-To: <20230215000446.1655635-1-willy@infradead.org>
Add set_ptes() and update_mmu_cache_range().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
arch/hexagon/include/asm/cacheflush.h | 7 +++++--
arch/hexagon/include/asm/pgtable.h | 16 ++++++++++++++--
2 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h
index 6eff0730e6ef..63ca314ede89 100644
--- a/arch/hexagon/include/asm/cacheflush.h
+++ b/arch/hexagon/include/asm/cacheflush.h
@@ -58,12 +58,15 @@ extern void flush_cache_all_hexagon(void);
* clean the cache when the PTE is set.
*
*/
-static inline void update_mmu_cache(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep)
+static inline void update_mmu_cache_range(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep, unsigned int nr)
{
/* generic_ptrace_pokedata doesn't wind up here, does it? */
}
+#define update_mmu_cache(vma, addr, ptep) \
+ update_mmu_cache_range(vma, addr, ptep, 1)
+
void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long vaddr, void *dst, void *src, int len);
#define copy_to_user_page copy_to_user_page
diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h
index 59393613d086..f58f1d920769 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -346,12 +346,24 @@ static inline int pte_exec(pte_t pte)
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
/*
- * set_pte_at - update page table and do whatever magic may be
+ * set_ptes - update page table and do whatever magic may be
* necessary to make the underlying hardware/firmware take note.
*
* VM may require a virtual instruction to alert the MMU.
*/
-#define set_pte_at(mm, addr, ptep, pte) set_pte(ptep, pte)
+static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte, unsigned int nr)
+{
+ for (;;) {
+ set_pte(ptep, pte);
+ if (--nr == 0)
+ break;
+ ptep++;
+ pte_val(pte) += PAGE_SIZE;
+ }
+}
+
+#define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1)
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
--
2.39.1
next prev parent reply other threads:[~2023-02-15 0:05 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-11 3:39 [PATCH 0/7] New arch interfaces for manipulating multiple pages Matthew Wilcox (Oracle)
2023-02-11 3:39 ` [PATCH 1/7] mm: Convert page_table_check_pte_set() to page_table_check_ptes_set() Matthew Wilcox (Oracle)
2023-02-11 3:39 ` [PATCH 2/7] mm: Add generic flush_icache_pages() and documentation Matthew Wilcox (Oracle)
2023-02-11 3:39 ` [PATCH 3/7] mm: Add folio_flush_mapping() Matthew Wilcox (Oracle)
2023-02-11 3:39 ` [PATCH 4/7] mm: Remove ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO Matthew Wilcox (Oracle)
2023-02-12 15:51 ` Mike Rapoport
2023-02-12 23:59 ` Matthew Wilcox
2023-02-11 3:39 ` [PATCH 5/7] alpha: Implement the new page table range API Matthew Wilcox (Oracle)
2023-02-13 3:15 ` Yin, Fengwei
2023-02-11 3:39 ` [PATCH 6/7] arc: " Matthew Wilcox (Oracle)
2023-02-13 3:09 ` Yin, Fengwei
2023-02-13 15:16 ` Matthew Wilcox
2023-02-14 6:32 ` Yin, Fengwei
2023-02-11 3:39 ` [PATCH 7/7] x86: " Matthew Wilcox (Oracle)
2023-02-13 21:04 ` [PATCH 8/7] arm: " Matthew Wilcox (Oracle)
2023-02-15 0:04 ` [PATCH 9/7] arm64: " Matthew Wilcox (Oracle)
2023-02-15 0:04 ` [PATCH 10/7] riscv: " Matthew Wilcox (Oracle)
2023-02-15 8:38 ` Yin, Fengwei
2023-02-15 12:27 ` Yin, Fengwei
2023-02-16 8:14 ` Alexandre Ghiti
2023-02-16 13:27 ` Yin, Fengwei
2023-02-16 8:16 ` Alexandre Ghiti
2023-02-15 0:04 ` [PATCH 11/7] csky: " Matthew Wilcox (Oracle)
2023-02-15 0:04 ` Matthew Wilcox (Oracle) [this message]
2023-02-15 16:22 ` [PATCH 12/7] hexagon: " Brian Cain
2023-02-15 0:04 ` [PATCH 13/7] loongson: " Matthew Wilcox (Oracle)
2023-02-26 4:34 ` Matthew Wilcox
2023-02-26 6:56 ` WANG Xuerui
2023-02-15 13:26 ` [PATCH 9/7] arm64: " Catalin Marinas
2023-02-15 20:09 ` [PATCH 14/17] ia64: " Matthew Wilcox (Oracle)
2023-02-15 20:09 ` [PATCH 15/17] m68k: " Matthew Wilcox (Oracle)
2023-02-16 0:59 ` Michael Schmitz
2023-02-16 4:26 ` Matthew Wilcox
2023-02-16 7:55 ` Geert Uytterhoeven
2023-02-16 22:03 ` Michael Schmitz
2023-02-15 20:09 ` [PATCH 16/17] microblaze: " Matthew Wilcox (Oracle)
2023-02-15 20:09 ` [PATCH 17/17] mips: " Matthew Wilcox (Oracle)
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