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git://projects.qi-hardware.com/openwrt-xburst.git
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c9e9be9d3a
Thanks to jhansen and Wolfram Joost for the fixes and to ryd for the test hardware. Seems like the user space segfaults actually came from this patch: http://lkml.org/lkml/2006/12/12/158 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9285 3c298f89-4303-0410-b956-a3cf2f4a3e73
72 lines
2.3 KiB
Diff
72 lines
2.3 KiB
Diff
Index: linux-2.6.23/arch/mips/mm/init.c
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===================================================================
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--- linux-2.6.23.orig/arch/mips/mm/init.c 2007-10-13 11:46:58.762489429 +0200
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+++ linux-2.6.23/arch/mips/mm/init.c 2007-10-13 11:47:36.092616749 +0200
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@@ -205,31 +205,6 @@
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preempt_check_resched();
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}
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-void copy_user_highpage(struct page *to, struct page *from,
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- unsigned long vaddr, struct vm_area_struct *vma)
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-{
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- void *vfrom, *vto;
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-
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- vto = kmap_atomic(to, KM_USER1);
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- if (cpu_has_dc_aliases && cpu_use_kmap_coherent && !Page_dcache_dirty(from)) {
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- vfrom = kmap_coherent(from, vaddr);
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- copy_page(vto, vfrom);
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- kunmap_coherent();
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- } else {
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- vfrom = kmap_atomic(from, KM_USER0);
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- copy_page(vto, vfrom);
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- kunmap_atomic(vfrom, KM_USER0);
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- }
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- if (((vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc) ||
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- pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
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- flush_data_cache_page((unsigned long)vto);
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- kunmap_atomic(vto, KM_USER1);
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- /* Make sure this page is cleared on other CPU's too before using it */
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- smp_wmb();
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-}
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-
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-EXPORT_SYMBOL(copy_user_highpage);
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-
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void copy_to_user_page(struct vm_area_struct *vma,
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struct page *page, unsigned long vaddr, void *dst, const void *src,
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unsigned long len)
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Index: linux-2.6.23/include/asm-mips/page.h
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===================================================================
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--- linux-2.6.23.orig/include/asm-mips/page.h 2007-10-13 11:45:50.518600430 +0200
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+++ linux-2.6.23/include/asm-mips/page.h 2007-10-13 11:47:26.472068504 +0200
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@@ -35,6 +35,7 @@
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#ifndef __ASSEMBLY__
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#include <linux/pfn.h>
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+#include <asm/cpu-features.h>
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#include <asm/io.h>
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/*
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@@ -67,13 +68,16 @@
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flush_data_cache_page((unsigned long)addr);
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}
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-extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
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- struct page *to);
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-struct vm_area_struct;
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-extern void copy_user_highpage(struct page *to, struct page *from,
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- unsigned long vaddr, struct vm_area_struct *vma);
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+static inline void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
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+ struct page *to)
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+{
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+ extern void (*flush_data_cache_page)(unsigned long addr);
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-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
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+ copy_page(vto, vfrom);
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+ if (!cpu_has_ic_fills_f_dc ||
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+ pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
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+ flush_data_cache_page((unsigned long)vto);
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+}
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/*
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* These are used to make use of C type-checking..
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