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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pQgjv-003k2o-Et; Sat, 11 Feb 2023 03:39:51 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-arch@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH 5/7] alpha: Implement the new page table range API Date: Sat, 11 Feb 2023 03:39:46 +0000 Message-Id: <20230211033948.891959-6-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230211033948.891959-1-willy@infradead.org> References: <20230211033948.891959-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: qt51m8ar9ji88w8644mdqkyisy6datyr X-Rspamd-Queue-Id: 9D70218000B X-HE-Tag: 1676086805-878468 X-HE-Meta: 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 rwJL61I9 bqnsdOs/KAsBGWeZZVhQalTUYxpggSex73/gUU7OAQRZBrfGJCJQc+YC4z6oWoOFeg7HnnRYpcaVUwqcpP0T0y9Jhxhc4zra5J0svs95g7MyDLLaCZqG7U7c56P6NcP4Ptjl1fwgvg3teTvsfYZs/W06qURu4HoanjxfsSHmZ+NZxIzEpRbVKkexfnKbOOzWAVYb5DJuMQ97hZck= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add set_ptes(), update_mmu_cache_range() and flush_icache_pages(). Signed-off-by: Matthew Wilcox (Oracle) --- arch/alpha/include/asm/cacheflush.h | 10 ++++++++++ arch/alpha/include/asm/pgtable.h | 18 +++++++++++++++++- 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arch/alpha/include/asm/cacheflush.h b/arch/alpha/include/asm/cacheflush.h index 9945ff483eaf..3956460e69e2 100644 --- a/arch/alpha/include/asm/cacheflush.h +++ b/arch/alpha/include/asm/cacheflush.h @@ -57,6 +57,16 @@ extern void flush_icache_user_page(struct vm_area_struct *vma, #define flush_icache_page(vma, page) \ flush_icache_user_page((vma), (page), 0, 0) +/* + * Both implementations of flush_icache_user_page flush the entire + * address space, so one call, no matter how many pages. + */ +static inline void flush_icache_pages(struct vm_area_struct *vma, + struct page *page, unsigned int nr) +{ + flush_icache_user_page(vma, page, 0, 0); +} + #include #endif /* _ALPHA_CACHEFLUSH_H */ diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h index ba43cb841d19..1e3354e9731b 100644 --- a/arch/alpha/include/asm/pgtable.h +++ b/arch/alpha/include/asm/pgtable.h @@ -26,7 +26,18 @@ struct vm_area_struct; * hook is made available. */ #define set_pte(pteptr, pteval) ((*(pteptr)) = (pteval)) -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +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) += 1UL << 32; + } +} +#define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) /* PMD_SHIFT determines the size of the area a second-level page table can map */ #define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3)) @@ -303,6 +314,11 @@ extern inline void update_mmu_cache(struct vm_area_struct * vma, { } +static inline void update_mmu_cache_range(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, unsigned int nr) +{ +} + /* * Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that * are !pte_none() && !pte_present(). -- 2.39.1