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authorPeter Denison <openwrt@marshadder.org>2008-04-25 20:49:40 +0000
committerPeter Denison <openwrt@marshadder.org>2008-04-25 20:49:40 +0000
commitb6b6155ec81c704cd70157753b38f90fd506e708 (patch)
tree0e3521dc9f267b5f130bb1ac1bcdae91c4be11cb /target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch
parent5f13c4844e0784ff40c1d15f5077d945ebf17f9b (diff)
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First step to upgrade of brcm47xx to kernel version 2.6.25
SVN-Revision: 10939
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch')
-rw-r--r--target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch71
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch b/target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch
new file mode 100644
index 0000000000..16e7e3f36c
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.25/310-no_highpage.patch
@@ -0,0 +1,71 @@
+Index: linux-2.6.23/arch/mips/mm/init.c
+===================================================================
+--- linux-2.6.23.orig/arch/mips/mm/init.c 2007-10-13 11:46:58.762489429 +0200
++++ linux-2.6.23/arch/mips/mm/init.c 2007-10-13 11:47:36.092616749 +0200
+@@ -205,31 +205,6 @@
+ preempt_check_resched();
+ }
+
+-void copy_user_highpage(struct page *to, struct page *from,
+- unsigned long vaddr, struct vm_area_struct *vma)
+-{
+- void *vfrom, *vto;
+-
+- vto = kmap_atomic(to, KM_USER1);
+- if (cpu_has_dc_aliases && cpu_use_kmap_coherent && !Page_dcache_dirty(from)) {
+- vfrom = kmap_coherent(from, vaddr);
+- copy_page(vto, vfrom);
+- kunmap_coherent();
+- } else {
+- vfrom = kmap_atomic(from, KM_USER0);
+- copy_page(vto, vfrom);
+- kunmap_atomic(vfrom, KM_USER0);
+- }
+- if (((vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc) ||
+- pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
+- flush_data_cache_page((unsigned long)vto);
+- kunmap_atomic(vto, KM_USER1);
+- /* Make sure this page is cleared on other CPU's too before using it */
+- smp_wmb();
+-}
+-
+-EXPORT_SYMBOL(copy_user_highpage);
+-
+ void copy_to_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr, void *dst, const void *src,
+ unsigned long len)
+Index: linux-2.6.23/include/asm-mips/page.h
+===================================================================
+--- linux-2.6.23.orig/include/asm-mips/page.h 2007-10-13 11:45:50.518600430 +0200
++++ linux-2.6.23/include/asm-mips/page.h 2007-10-13 11:47:26.472068504 +0200
+@@ -35,6 +35,7 @@
+ #ifndef __ASSEMBLY__
+
+ #include <linux/pfn.h>
++#include <asm/cpu-features.h>
+ #include <asm/io.h>
+
+ /*
+@@ -67,13 +68,16 @@
+ flush_data_cache_page((unsigned long)addr);
+ }
+
+-extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
+- struct page *to);
+-struct vm_area_struct;
+-extern void copy_user_highpage(struct page *to, struct page *from,
+- unsigned long vaddr, struct vm_area_struct *vma);
++static inline void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
++ struct page *to)
++{
++ extern void (*flush_data_cache_page)(unsigned long addr);
+
+-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
++ copy_page(vto, vfrom);
++ if (!cpu_has_ic_fills_f_dc ||
++ pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
++ flush_data_cache_page((unsigned long)vto);
++}
+
+ /*
+ * These are used to make use of C type-checking..