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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pS5IM-006wkl-Tq; Wed, 15 Feb 2023 00:05:10 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, Brian Cain , linux-hexagon@vger.kernel.org, linux-arch@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH 12/7] hexagon: Implement the new page table range API Date: Wed, 15 Feb 2023 00:04:45 +0000 Message-Id: <20230215000446.1655635-4-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230215000446.1655635-1-willy@infradead.org> References: <20230211033948.891959-1-willy@infradead.org> <20230215000446.1655635-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 0FB1E1C0013 X-Rspamd-Server: rspam01 X-Stat-Signature: tntm1k6dgu87fk4ndgtfgxt1w1dgcqh8 X-HE-Tag: 1676419514-913509 X-HE-Meta: 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 PXMq+iV0 a1UXg2ecK+F1XNzeEU9PUsKDpcpFvGRG0rRLvE/7MlvCTBZxo653UDmh4I1vOdKhpl4hga+ErkYTd7VaP/w32W1y/daJq3N1BzqQxArrT3I9xxGHVkpu0oX27LjUG/hyC3+S3ucJN3p8Vn/MtN/l6qa0SIx1Xxnzu792/6HPD7NB6clsA6zjg0ZBhskEgAREapWoM 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() and update_mmu_cache_range(). Signed-off-by: Matthew Wilcox (Oracle) --- 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