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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pX7fH-0018oc-Ud; Tue, 28 Feb 2023 21:37:39 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-arch@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, Richard Henderson , Ivan Kokshaysky , Matt Turner , linux-alpha@vger.kernel.org Subject: [PATCH v3 05/34] alpha: Implement the new page table range API Date: Tue, 28 Feb 2023 21:37:08 +0000 Message-Id: <20230228213738.272178-6-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230228213738.272178-1-willy@infradead.org> References: <20230228213738.272178-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 34680C0025 X-Rspamd-Server: rspam01 X-Stat-Signature: aa4rh7dmadpztdiyypp5eryfc6iyhps9 X-HE-Tag: 1677620261-946757 X-HE-Meta: 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 L3ZE0Lpn Jmm3Z8PXLASbSLe/aQNBv+DZPsueVtmtZIq+NLjzRb6mgOlxFKbUWdO0M/LF4QwZfBAxltRz1iEdOZFkFoQZN6xIGoBZatd4kbtwDPtAiLB1wug3DVxDmheAczokwanpEbC3LVeAGrdtpVugZGWBRT0PqGw3IaPal4Pwr/Jyj9OmXT7N7Acwv/JvVqwZjscHi2c7G0aP36XvEFdNlWh55ANP2g48ipKIgx7VnkFR0bW2X+NQcfZn3Xae18PYZaujgx1MTbm837f2FTNIASG5SrPAXdJNGdlR9/aH6i/ETeMMa2ljIkHpX9acxpqSpWOiXA9VJ2fBrzA2PkY+udg/0B+TxJOFuj6aMZlshx9wePkA+D9x5JfgobgFI6Kiz4ixSwsd7zqMW4Rc/oRdlDa99xI9cbg== 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) Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: linux-alpha@vger.kernel.org --- 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