From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Mon, 29 Mar 2010 14:24:57 +0100 Subject: [PATCH] ARM: Implement copy_to_user_page() for noMMU Message-ID: <20100329132457.1967.3394.stgit@e102109-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Commit 7959722 introduced calls to copy_(to|from)_user_page() from access_process_vm() in mm/nommu.c. The copy_to_user_page() was not implemented on noMMU ARM. Signed-off-by: Catalin Marinas --- arch/arm/mm/nommu.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index f8791ee..33b3273 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -65,6 +65,15 @@ void flush_dcache_page(struct page *page) } EXPORT_SYMBOL(flush_dcache_page); +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long uaddr, void *dst, const void *src, + unsigned long len) +{ + memcpy(dst, src, len); + if (vma->vm_flags & VM_EXEC) + __cpuc_coherent_user_range(uaddr, uaddr + len); +} + void __iomem *__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size, unsigned int mtype) {