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| author | Rafał Miłecki <rafal@milecki.pl> | 2020-03-10 15:46:49 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2020-03-10 15:50:55 +0100 |
| commit | d369d92fc7ed2970540235b27441f75a81ef171b (patch) | |
| tree | 248c5980fda5e8631c4c7b58a2bf55756e475b1d /target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch | |
| parent | 5c98041d5a054bfe68070bbfa6fdeab63e6586fc (diff) | |
| download | upstream-d369d92fc7ed2970540235b27441f75a81ef171b.tar.gz upstream-d369d92fc7ed2970540235b27441f75a81ef171b.tar.bz2 upstream-d369d92fc7ed2970540235b27441f75a81ef171b.zip | |
bcm47xx: add support for kernel 5.4
Ethernet, switch, LEDs, buttons, USB, sysupgrade & LuCI were
successfully tested on BCM4706.
WARNING: Hack for BCM4710 adding BCM4710_PROTECTED_FILL_TLB() to the
local_r4k_flush_cache_sigtramp() could not be ported. That function has
been dropped in:
commit adcc81f148d7 ("MIPS: math-emu: Write-protect delay slot emulation pages")
commit 3315b6b336c8 ("MIPS: Delete unused flush_cache_sigtramp()")
it's unsure if that chipset will still work reliably.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch')
| -rw-r--r-- | target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch b/target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch new file mode 100644 index 0000000000..daa2c1adf0 --- /dev/null +++ b/target/linux/bcm47xx/patches-5.4/300-fork_cacheflush.patch @@ -0,0 +1,21 @@ +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 +@@ -46,7 +46,7 @@ + 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); |