[PATCH 24/29] m68k: implement flush_icache_user_range
From: Christoph Hellwig <hch@lst.de>
Date: 2020-05-15 14:39:02
Also in:
linux-alpha, linux-arch, linux-arm-kernel, linux-fsdevel, linux-m68k, linux-mips, linux-mm, linux-riscv, linux-sh, linux-um, lkml, sparclinux
Subsystem:
m68k architecture, the rest · Maintainers:
Geert Uytterhoeven, Linus Torvalds
Rename the current flush_icache_range to flush_icache_user_range as
per commit ae92ef8a4424 ("PATCH] flush icache in correct context") there
seems to be an assumption that it operates on user addresses. Add a
flush_icache_range around it that for now is a no-op.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
arch/m68k/include/asm/cacheflush_mm.h | 2 ++
arch/m68k/mm/cache.c | 7 ++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h
index 95376bf84faa5..1ac55e7b47f01 100644
--- a/arch/m68k/include/asm/cacheflush_mm.h
+++ b/arch/m68k/include/asm/cacheflush_mm.h@@ -257,6 +257,8 @@ static inline void __flush_page_to_ram(void *vaddr) extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); extern void flush_icache_range(unsigned long address, unsigned long endaddr); +extern void flush_icache_user_range(unsigned long address, + unsigned long endaddr); static inline void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr,
diff --git a/arch/m68k/mm/cache.c b/arch/m68k/mm/cache.c
index 99057cd5ff7f1..7915be3a09712 100644
--- a/arch/m68k/mm/cache.c
+++ b/arch/m68k/mm/cache.c@@ -73,7 +73,7 @@ static unsigned long virt_to_phys_slow(unsigned long vaddr) /* Push n pages at kernel virtual address and clear the icache */ /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ -void flush_icache_range(unsigned long address, unsigned long endaddr) +void flush_icache_user_range(unsigned long address, unsigned long endaddr) { if (CPU_IS_COLDFIRE) { unsigned long start, end;
@@ -104,6 +104,11 @@ void flush_icache_range(unsigned long address, unsigned long endaddr) : "di" (FLUSH_I)); } } + +void flush_icache_range(unsigned long address, unsigned long endaddr) +{ + flush_icache_user_range(address, endaddr); +} EXPORT_SYMBOL(flush_icache_range); void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
--
2.26.2