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brcm47xx: fix parts of the cache code that were not covered by the kmap_coherent patch yet. this seems to fix the crazy segfaults we were getting... 

SVN-Revision: 7745
owl
Felix Fietkau 2007-06-27 22:01:16 +00:00
parent 6a0c74d7b9
commit d2e88fa30c
1 changed files with 39 additions and 8 deletions
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47
target/linux/brcm47xx-2.6/patches-2.6.22/160-kmap_coherent.patch
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@ -1,7 +1,7 @@
Index: linux-2.6.22-rc4/arch/mips/mm/init.c
Index: linux-2.6.22-rc5/arch/mips/mm/init.c
===================================================================
--- linux-2.6.22-rc4.orig/arch/mips/mm/init.c 2007-06-10 21:32:12.000000000 +0100
+++ linux-2.6.22-rc4/arch/mips/mm/init.c 2007-06-10 21:33:21.000000000 +0100
--- linux-2.6.22-rc5.orig/arch/mips/mm/init.c 2007-06-27 23:40:06.406545264 +0200
+++ linux-2.6.22-rc5/arch/mips/mm/init.c 2007-06-27 23:40:08.920163136 +0200
@@ -207,7 +207,7 @@
void *vfrom, *vto;
@ -29,10 +29,10 @@ Index: linux-2.6.22-rc4/arch/mips/mm/init.c
void *vfrom =
kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
memcpy(dst, vfrom, len);
Index: linux-2.6.22-rc4/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
Index: linux-2.6.22-rc5/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.22-rc4/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h 2007-06-10 21:33:21.000000000 +0100
+++ linux-2.6.22-rc5/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h 2007-06-27 23:40:08.921162984 +0200
@@ -0,0 +1,13 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
@ -47,10 +47,10 @@ Index: linux-2.6.22-rc4/include/asm-mips/mach-bcm947xx/cpu-feature-overrides.h
+#define cpu_use_kmap_coherent 0
+
+#endif /* __ASM_MACH_BCM947XX_CPU_FEATURE_OVERRIDES_H */
Index: linux-2.6.22-rc4/include/asm-mips/cpu-features.h
Index: linux-2.6.22-rc5/include/asm-mips/cpu-features.h
===================================================================
--- linux-2.6.22-rc4.orig/include/asm-mips/cpu-features.h 2007-06-10 21:32:12.000000000 +0100
+++ linux-2.6.22-rc4/include/asm-mips/cpu-features.h 2007-06-10 21:33:21.000000000 +0100
--- linux-2.6.22-rc5.orig/include/asm-mips/cpu-features.h 2007-06-27 23:40:06.419543288 +0200
+++ linux-2.6.22-rc5/include/asm-mips/cpu-features.h 2007-06-27 23:40:08.921162984 +0200
@@ -101,6 +101,9 @@
#ifndef cpu_has_pindexed_dcache
#define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
@ -61,3 +61,34 @@ Index: linux-2.6.22-rc4/include/asm-mips/cpu-features.h
/*
* I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
Index: linux-2.6.22-rc5/arch/mips/mm/c-r4k.c
===================================================================
--- linux-2.6.22-rc5.orig/arch/mips/mm/c-r4k.c 2007-06-27 23:40:45.883543848 +0200
+++ linux-2.6.22-rc5/arch/mips/mm/c-r4k.c 2007-06-27 23:42:06.682260576 +0200
@@ -339,7 +339,7 @@
static void r4k_flush_cache_all(void)
{
- if (!cpu_has_dc_aliases)
+ if (!cpu_has_dc_aliases || !cpu_use_kmap_coherent)
return;
r4k_on_each_cpu(local_r4k_flush_cache_all, NULL, 1, 1);
@@ -380,7 +380,7 @@
static void r4k_flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- if (!cpu_has_dc_aliases)
+ if (!cpu_has_dc_aliases || !cpu_use_kmap_coherent)
return;
r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
@@ -412,7 +412,7 @@
static void r4k_flush_cache_mm(struct mm_struct *mm)
{
- if (!cpu_has_dc_aliases)
+ if (!cpu_has_dc_aliases || !cpu_use_kmap_coherent)
return;
r4k_on_each_cpu(local_r4k_flush_cache_mm, mm, 1, 1);