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bh=UHpZ6SH0+WkPUL5bpjXDkOmNFMUyMh29y7ULEhoyDL8=; b=vnFHLhamhUuJx0XVkHEr5iDcu2 +3TJfoCbjKyZ6MYJWfL+lRo5VdBtcZ3o3ErEP71IBepVWG5QEcktOE64SGuwbKhI2TCNJy2jSUr3S XUdOYIzfjjZpYt21j2rO+RsnS3qFE18u8bltgkl7lJuHO6cpLA6wpdidTuFE82lFB899X/avx3efl wuwaJ8F5jzkTFJknU8FZMdIIE4XzZIBI/6INfraNfqH9T4oT9p9gcyypEMXe09QySrPxQDV6Yuf06 VyHnvza0hQMTgJM+PJrtzKBa7QGc2QTjnTKQ6j6nSJElgEJgdaXIJX31I7n7Tl2yJRfXhmIyteKz4 +mjospSg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qIxjU-00Euql-KC; Mon, 10 Jul 2023 20:43:44 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 31/38] mm: Rationalise flush_icache_pages() and flush_icache_page() Date: Mon, 10 Jul 2023 21:43:32 +0100 Message-Id: <20230710204339.3554919-32-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230710204339.3554919-1-willy@infradead.org> References: <20230710204339.3554919-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 1084CA0011 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: ws7wng88n96xwrjdawdpqhqo5woixim3 X-HE-Tag: 1689021825-536089 X-HE-Meta: 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 PrkdOHPV /tiovKQ6aNHuz3w4Ml6+sTo2zb19UA04qrpqbNg8BNGujqSNA5eJKcFjfuuyS8QXb3LyBWC2VQ/jSFPxbERakj2X3LLVLAJHL5WU4r1s/Ck6XFfXcA89x4MiC2sPODaZVIscbzMGy8rVZZXJ/EEHqRi7foMjaWR2qSBTHvajZJeATJlp5eF7+PsaiA4trNBE50wQzywFzKxdTqkfBQ5K5QrUR5gtXpJ0CoT+l 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: Move the default (no-op) implementation of flush_icache_pages() to from . Remove the flush_icache_page() wrapper from each architecture into . Signed-off-by: Matthew Wilcox (Oracle) --- arch/alpha/include/asm/cacheflush.h | 5 +---- arch/arc/include/asm/cacheflush.h | 9 --------- arch/arm/include/asm/cacheflush.h | 7 ------- arch/csky/abiv1/inc/abi/cacheflush.h | 1 - arch/csky/abiv2/inc/abi/cacheflush.h | 1 - arch/hexagon/include/asm/cacheflush.h | 2 +- arch/loongarch/include/asm/cacheflush.h | 2 -- arch/m68k/include/asm/cacheflush_mm.h | 1 - arch/mips/include/asm/cacheflush.h | 6 ------ arch/nios2/include/asm/cacheflush.h | 2 +- arch/parisc/include/asm/cacheflush.h | 2 +- arch/sh/include/asm/cacheflush.h | 2 +- arch/sparc/include/asm/cacheflush_32.h | 2 -- arch/sparc/include/asm/cacheflush_64.h | 3 --- arch/xtensa/include/asm/cacheflush.h | 4 ---- include/asm-generic/cacheflush.h | 12 ------------ include/linux/cacheflush.h | 9 +++++++++ 17 files changed, 14 insertions(+), 56 deletions(-) diff --git a/arch/alpha/include/asm/cacheflush.h b/arch/alpha/include/asm/cacheflush.h index 3956460e69e2..36a7e924c3b9 100644 --- a/arch/alpha/include/asm/cacheflush.h +++ b/arch/alpha/include/asm/cacheflush.h @@ -53,10 +53,6 @@ extern void flush_icache_user_page(struct vm_area_struct *vma, #define flush_icache_user_page flush_icache_user_page #endif /* CONFIG_SMP */ -/* This is used only in __do_fault and do_swap_page. */ -#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. @@ -66,6 +62,7 @@ static inline void flush_icache_pages(struct vm_area_struct *vma, { flush_icache_user_page(vma, page, 0, 0); } +#define flush_icache_pages flush_icache_pages #include diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h index 04f65f588510..bd5b1a9a0544 100644 --- a/arch/arc/include/asm/cacheflush.h +++ b/arch/arc/include/asm/cacheflush.h @@ -18,15 +18,6 @@ #include #include -/* - * Semantically we need this because icache doesn't snoop dcache/dma. - * However ARC Cache flush requires paddr as well as vaddr, latter not available - * in the flush_icache_page() API. So we no-op it but do the equivalent work - * in update_mmu_cache() - */ -#define flush_icache_page(vma, page) -#define flush_icache_pages(vma, page, nr) - void flush_cache_all(void); void flush_icache_range(unsigned long kstart, unsigned long kend); diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 841e268d2374..f6181f69577f 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -321,13 +321,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma, #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) -/* - * We don't appear to need to do anything here. In fact, if we did, we'd - * duplicate cache flushing elsewhere performed by flush_dcache_page(). - */ -#define flush_icache_page(vma,page) do { } while (0) -#define flush_icache_pages(vma, page, nr) do { } while (0) - /* * flush_cache_vmap() is used when creating mappings (eg, via vmap, * vmalloc, ioremap etc) in kernel space for pages. On non-VIPT diff --git a/arch/csky/abiv1/inc/abi/cacheflush.h b/arch/csky/abiv1/inc/abi/cacheflush.h index 0d6cb65624c4..908d8b0bc4fd 100644 --- a/arch/csky/abiv1/inc/abi/cacheflush.h +++ b/arch/csky/abiv1/inc/abi/cacheflush.h @@ -45,7 +45,6 @@ extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, u #define flush_cache_vmap(start, end) cache_wbinv_all() #define flush_cache_vunmap(start, end) cache_wbinv_all() -#define flush_icache_page(vma, page) do {} while (0); #define flush_icache_range(start, end) cache_wbinv_range(start, end) #define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end) #define flush_icache_deferred(mm) do {} while (0); diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h index 9c728933a776..40be16907267 100644 --- a/arch/csky/abiv2/inc/abi/cacheflush.h +++ b/arch/csky/abiv2/inc/abi/cacheflush.h @@ -33,7 +33,6 @@ static inline void flush_dcache_page(struct page *page) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_icache_page(vma, page) do { } while (0) #define flush_icache_range(start, end) cache_wbinv_range(start, end) diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h index dc3f500a5a01..bfff514a81c8 100644 --- a/arch/hexagon/include/asm/cacheflush.h +++ b/arch/hexagon/include/asm/cacheflush.h @@ -18,7 +18,7 @@ * - flush_cache_range(vma, start, end) flushes a range of pages * - flush_icache_range(start, end) flush a range of instructions * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache - * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache + * - flush_icache_pages(vma, pg, nr) flushes(invalidates) nr pages for icache * * Need to doublecheck which one is really needed for ptrace stuff to work. */ diff --git a/arch/loongarch/include/asm/cacheflush.h b/arch/loongarch/include/asm/cacheflush.h index 88a44da50a3b..80bd74106985 100644 --- a/arch/loongarch/include/asm/cacheflush.h +++ b/arch/loongarch/include/asm/cacheflush.h @@ -46,8 +46,6 @@ void local_flush_icache_range(unsigned long start, unsigned long end); #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) #define flush_cache_vmap(start, end) do { } while (0) #define flush_cache_vunmap(start, end) do { } while (0) -#define flush_icache_page(vma, page) do { } while (0) -#define flush_icache_pages(vma, page) do { } while (0) #define flush_icache_user_page(vma, page, addr, len) do { } while (0) #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h index 88eb85e81ef6..ed12358c4783 100644 --- a/arch/m68k/include/asm/cacheflush_mm.h +++ b/arch/m68k/include/asm/cacheflush_mm.h @@ -261,7 +261,6 @@ static inline void __flush_pages_to_ram(void *vaddr, unsigned int nr) #define flush_dcache_mmap_unlock(mapping) do { } while (0) #define flush_icache_pages(vma, page, nr) \ __flush_pages_to_ram(page_address(page), nr) -#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h index 0f389bc7cb90..f36c2519ed97 100644 --- a/arch/mips/include/asm/cacheflush.h +++ b/arch/mips/include/asm/cacheflush.h @@ -82,12 +82,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma, __flush_anon_page(page, vmaddr); } -static inline void flush_icache_pages(struct vm_area_struct *vma, - struct page *page, unsigned int nr) -{ -} -#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) - extern void (*flush_icache_range)(unsigned long start, unsigned long end); extern void (*local_flush_icache_range)(unsigned long start, unsigned long end); extern void (*__flush_icache_user_range)(unsigned long start, diff --git a/arch/nios2/include/asm/cacheflush.h b/arch/nios2/include/asm/cacheflush.h index 8624ca83cffe..7c48c5213fb7 100644 --- a/arch/nios2/include/asm/cacheflush.h +++ b/arch/nios2/include/asm/cacheflush.h @@ -35,7 +35,7 @@ void flush_dcache_folio(struct folio *folio); extern void flush_icache_range(unsigned long start, unsigned long end); void flush_icache_pages(struct vm_area_struct *vma, struct page *page, unsigned int nr); -#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1); +#define flush_icache_pages flush_icache_pages #define flush_cache_vmap(start, end) flush_dcache_range(start, end) #define flush_cache_vunmap(start, end) flush_dcache_range(start, end) diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h index b77c3e0c37d3..b4006f2a9705 100644 --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -60,7 +60,7 @@ static inline void flush_dcache_page(struct page *page) void flush_icache_pages(struct vm_area_struct *vma, struct page *page, unsigned int nr); -#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) +#define flush_icache_pages flush_icache_pages #define flush_icache_range(s,e) do { \ flush_kernel_dcache_range_asm(s,e); \ diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 9fceef6f3e00..878b6b551bd2 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -53,7 +53,7 @@ extern void flush_icache_range(unsigned long start, unsigned long end); #define flush_icache_user_range flush_icache_range void flush_icache_pages(struct vm_area_struct *vma, struct page *page, unsigned int nr); -#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) +#define flush_icache_pages flush_icache_pages extern void flush_cache_sigtramp(unsigned long address); struct flusher_data { diff --git a/arch/sparc/include/asm/cacheflush_32.h b/arch/sparc/include/asm/cacheflush_32.h index 8dba35d63328..21f6c918238b 100644 --- a/arch/sparc/include/asm/cacheflush_32.h +++ b/arch/sparc/include/asm/cacheflush_32.h @@ -15,8 +15,6 @@ #define flush_cache_page(vma,addr,pfn) \ sparc32_cachetlb_ops->cache_page(vma, addr) #define flush_icache_range(start, end) do { } while (0) -#define flush_icache_page(vma, pg) do { } while (0) -#define flush_icache_pages(vma, pg, nr) do { } while (0) #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ diff --git a/arch/sparc/include/asm/cacheflush_64.h b/arch/sparc/include/asm/cacheflush_64.h index a9a719f04d06..0e879004efff 100644 --- a/arch/sparc/include/asm/cacheflush_64.h +++ b/arch/sparc/include/asm/cacheflush_64.h @@ -53,9 +53,6 @@ static inline void flush_dcache_page(struct page *page) flush_dcache_folio(page_folio(page)); } -#define flush_icache_page(vma, pg) do { } while(0) -#define flush_icache_pages(vma, pg, nr) do { } while(0) - void flush_ptrace_access(struct vm_area_struct *, struct page *, unsigned long uaddr, void *kaddr, unsigned long len, int write); diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h index 35153f6725e4..785a00ce83c1 100644 --- a/arch/xtensa/include/asm/cacheflush.h +++ b/arch/xtensa/include/asm/cacheflush.h @@ -160,10 +160,6 @@ void local_flush_cache_page(struct vm_area_struct *vma, __invalidate_icache_range(start,(end) - (start)); \ } while (0) -/* This is not required, see Documentation/core-api/cachetlb.rst */ -#define flush_icache_page(vma,page) do { } while (0) -#define flush_icache_pages(vma, page, nr) do { } while (0) - #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h index 09d51a680765..84ec53ccc450 100644 --- a/include/asm-generic/cacheflush.h +++ b/include/asm-generic/cacheflush.h @@ -77,18 +77,6 @@ static inline void flush_icache_range(unsigned long start, unsigned long end) #define flush_icache_user_range flush_icache_range #endif -#ifndef flush_icache_page -static inline void flush_icache_pages(struct vm_area_struct *vma, - struct page *page, unsigned int nr) -{ -} - -static inline void flush_icache_page(struct vm_area_struct *vma, - struct page *page) -{ -} -#endif - #ifndef flush_icache_user_page static inline void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h index 82136f3fcf54..55f297b2c23f 100644 --- a/include/linux/cacheflush.h +++ b/include/linux/cacheflush.h @@ -17,4 +17,13 @@ static inline void flush_dcache_folio(struct folio *folio) #define flush_dcache_folio flush_dcache_folio #endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */ +#ifndef flush_icache_pages +static inline void flush_icache_pages(struct vm_area_struct *vma, + struct page *page, unsigned int nr) +{ +} +#endif + +#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) + #endif /* _LINUX_CACHEFLUSH_H */