From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>,
Roman Zippel <zippel@linux-m68k.org>
Cc: Jessica Yu <jeyu@kernel.org>, Michal Simek <monstr@monstr.eu>,
x86@kernel.org, linux-alpha@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
linux-mips@vger.kernel.org, openrisc@lists.librecores.org,
linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 11/31] arm64: use asm-generic/cacheflush.h
Date: Sun, 10 May 2020 09:54:50 +0200 [thread overview]
Message-ID: <20200510075510.987823-12-hch@lst.de> (raw)
In-Reply-To: <20200510075510.987823-1-hch@lst.de>
ARM64 needs almost no cache flushing routines of its own. Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/arm64/include/asm/cacheflush.h | 46 ++++-------------------------
1 file changed, 5 insertions(+), 41 deletions(-)
diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h
index e6cca3d4acf70..03a5a187163ab 100644
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -94,20 +94,7 @@ static inline void flush_icache_range(unsigned long start, unsigned long end)
#endif
kick_all_cpus_sync();
}
-
-static inline void flush_cache_mm(struct mm_struct *mm)
-{
-}
-
-static inline void flush_cache_page(struct vm_area_struct *vma,
- unsigned long user_addr, unsigned long pfn)
-{
-}
-
-static inline void flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
-}
+#define flush_icache_range flush_icache_range
/*
* Cache maintenance functions used by the DMA API. No to be used directly.
@@ -123,12 +110,7 @@ extern void __dma_flush_area(const void *, size_t);
*/
extern void copy_to_user_page(struct vm_area_struct *, struct page *,
unsigned long, void *, const void *, unsigned long);
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- do { \
- memcpy(dst, src, len); \
- } while (0)
-
-#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+#define copy_to_user_page copy_to_user_page
/*
* flush_dcache_page is used when the kernel has written to the page
@@ -154,29 +136,11 @@ static __always_inline void __flush_icache_all(void)
dsb(ish);
}
-#define flush_dcache_mmap_lock(mapping) do { } while (0)
-#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-
-/*
- * 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)
-
-/*
- * Not required on AArch64 (PIPT or VIPT non-aliasing D-cache).
- */
-static inline void flush_cache_vmap(unsigned long start, unsigned long end)
-{
-}
-
-static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
-{
-}
-
int set_memory_valid(unsigned long addr, int numpages, int enable);
int set_direct_map_invalid_noflush(struct page *page);
int set_direct_map_default_noflush(struct page *page);
-#endif
+#include <asm-generic/cacheflush.h>
+
+#endif /* __ASM_CACHEFLUSH_H */
--
2.26.2
next prev parent reply other threads:[~2020-05-10 7:58 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-10 7:54 sort out the flush_icache_range mess Christoph Hellwig
2020-05-10 7:54 ` [PATCH 01/31] arm: fix the flush_icache_range arguments in set_fiq_handler Christoph Hellwig
2020-05-10 7:54 ` [PATCH 02/31] arm64: fix the flush_icache_range arguments in machine_kexec Christoph Hellwig
2020-05-11 7:51 ` Will Deacon
2020-05-11 11:00 ` Catalin Marinas
2020-05-11 15:15 ` Christoph Hellwig
2020-05-10 7:54 ` [PATCH 03/31] MIPS: unexport __flush_icache_user_range Christoph Hellwig
2020-05-11 16:01 ` Thomas Bogendoerfer
2020-05-10 7:54 ` [PATCH 04/31] nds32: unexport flush_icache_page Christoph Hellwig
2020-05-10 7:54 ` [PATCH 05/31] powerpc: unexport flush_icache_user_range Christoph Hellwig
2020-05-10 7:54 ` [PATCH 06/31] unicore32: remove flush_cache_user_range Christoph Hellwig
2020-05-10 7:54 ` [PATCH 07/31] asm-generic: fix the inclusion guards for cacheflush.h Christoph Hellwig
2020-05-10 7:54 ` [PATCH 08/31] asm-generic: don't include <linux/mm.h> in cacheflush.h Christoph Hellwig
2020-05-10 7:54 ` [PATCH 09/31] asm-generic: improve the flush_dcache_page stub Christoph Hellwig
2020-05-10 7:54 ` [PATCH 10/31] alpha: use asm-generic/cacheflush.h Christoph Hellwig
2020-05-10 7:54 ` Christoph Hellwig [this message]
2020-05-10 7:54 ` [PATCH 12/31] c6x: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 13/31] hexagon: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 14/31] ia64: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 15/31] microblaze: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 16/31] m68knommu: " Christoph Hellwig
2020-05-12 14:44 ` Greg Ungerer
2020-05-10 7:54 ` [PATCH 17/31] openrisc: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 18/31] powerpc: " Christoph Hellwig
2020-05-10 7:54 ` [PATCH 19/31] riscv: " Christoph Hellwig
2020-05-12 23:00 ` Palmer Dabbelt
2020-05-13 6:23 ` Christoph Hellwig
2020-05-10 7:54 ` [PATCH 20/31] arm,sparc,unicore32: remove flush_icache_user_range Christoph Hellwig
2020-05-10 7:55 ` [PATCH 21/31] mm: rename flush_icache_user_range to flush_icache_user_page Christoph Hellwig
2020-05-11 7:36 ` Geert Uytterhoeven
2020-05-10 7:55 ` [PATCH 22/31] asm-generic: add a flush_icache_user_range stub Christoph Hellwig
2020-05-10 7:55 ` [PATCH 23/31] sh: implement flush_icache_user_range Christoph Hellwig
2020-05-10 7:55 ` [PATCH 24/31] xtensa: " Christoph Hellwig
2020-05-10 7:55 ` [PATCH 25/31] arm: rename flush_cache_user_range to flush_icache_user_range Christoph Hellwig
2020-05-10 7:55 ` [PATCH 26/31] m68k: implement flush_icache_user_range Christoph Hellwig
2020-05-11 7:38 ` Geert Uytterhoeven
2020-05-10 7:55 ` [PATCH 27/31] exec: only build read_code when needed Christoph Hellwig
2020-05-10 7:55 ` [PATCH 28/31] exec: use flush_icache_user_range in read_code Christoph Hellwig
2020-05-10 7:55 ` [PATCH 29/31] binfmt_flat: use flush_icache_user_range Christoph Hellwig
2020-05-12 14:46 ` Greg Ungerer
2020-05-10 7:55 ` [PATCH 30/31] nommu: use flush_icache_user_range in brk and mmap Christoph Hellwig
2020-05-10 7:55 ` [PATCH 31/31] module: move the set_fs hack for flush_icache_range to m68k Christoph Hellwig
2020-05-11 7:40 ` Geert Uytterhoeven
2020-05-11 15:11 ` Christoph Hellwig
2020-05-11 15:24 ` Geert Uytterhoeven
2020-05-11 16:37 ` Christoph Hellwig
2020-05-11 7:46 ` sort out the flush_icache_range mess Geert Uytterhoeven
2020-05-11 15:13 ` Christoph Hellwig
2020-05-11 15:25 ` Geert Uytterhoeven
2020-05-11 16:35 ` Christoph Hellwig
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