mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
22 lines
901 B
Diff
22 lines
901 B
Diff
|
From: Wolfram Joost <dbox2@frokaschwei.de>
|
||
|
|
Subject: [PATCH] fork_cacheflush
|
||
|
|
|
||
|
|
On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
|
||
|
|
seem to be caused by a kernel. They can be avoided by:
|
||
|
|
1) Disabling highpage
|
||
|
|
2) Using flush_cache_mm in flush_cache_dup_mm
|
||
|
|
|
||
|
|
For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
|
||
|
|
---
|
||
|
|
--- a/arch/mips/include/asm/cacheflush.h
|
||
|
|
+++ b/arch/mips/include/asm/cacheflush.h
|
||
|
|
@@ -47,7 +47,7 @@
|
||
|
|
extern void (*flush_cache_all)(void);
|
||
|
|
extern void (*__flush_cache_all)(void);
|
||
|
|
extern void (*flush_cache_mm)(struct mm_struct *mm);
|
||
|
|
-#define flush_cache_dup_mm(mm) do { (void) (mm); } while (0)
|
||
|
|
+#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
|
||
|
|
extern void (*flush_cache_range)(struct vm_area_struct *vma,
|
||
|
|
unsigned long start, unsigned long end);
|
||
|
|
extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
|