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bh=sxlK/dYV0ak5B9qHymTAjJFaSXLib2XJVaYWuBBEzbA=; b=KJArGZg5ykb/Jt6MrUMbaOQqDd UnMjz5PSAOd/w5pETz+CjwQDQ6ckLaC2VobWTEa9SBodl7MPmdlHlNGKktbfKpGOfOsumfcLXwB67 lpmiE7axvL4uExQ5lnOl67durBwmWg4ZP3kkly1SwvjwaYj8bJtVY9L4hxVwBRLIDtsrWqBf/+2ce Ipuk59BoCRUfc2NYdkGz4zXmBWMrGqW4PBFJMHel9wuHi2Xl6xsMts8Xep9d5Y0AfTev9G8LXypdg TRRlSzCBok51T+YaD9NzrQ4G+tQ794Piz+yjO2KqsXpBBINYOdQIkLzcCoL89nSDxn2zDk3bGfxzL pjYGDM4g==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pWhkt-000IX4-Sk; Mon, 27 Feb 2023 17:57:43 +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 v2 05/30] alpha: Implement the new page table range API Date: Mon, 27 Feb 2023 17:57:16 +0000 Message-Id: <20230227175741.71216-6-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230227175741.71216-1-willy@infradead.org> References: <20230227175741.71216-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 74F3A4001C X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: nd14gdw7tf6kujps9qms17gtg6mneahj X-HE-Tag: 1677520670-207553 X-HE-Meta: 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 FcK4vjN0 WLxZdcnK/SI4Eed54NGJ9phS+grbwmgSie6s/pkIIbg82PuTP8CE3K2AmOMXr+EOA47bwyk+53AcfSjcDLhDKGBx/8k6C+SHMk++XK5wKNikALLVLjN9W82RryMomX+oa2TqoWvQne07X1Tv9DHA3tBHG4C2Woq6J9OZVQt64X/FGXEfErrs7T8Une98rP54kqGI1fP1azEv/7zh85g+FQxpoc8F6ZYBw01xo2WV7s1EbXeizS9IVf5fkg9KaII4hsdwLwJfa/wJzAMhzavYq4Au+5YG5qOhAVzFFMIjx6EaajyavNfFoY/d3HaHy3a6o7o1sD145cKIH3twxxwiEs/8SnDXPl/fWq4TzGucxim6++2ZY+iXYnLBvNXI/8pFsoVblBIY8b9DS4zlPnEY0fqf+2Q== 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().