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| author | Felix Fietkau <nbd@nbd.name> | 2016-06-09 19:09:23 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2016-06-11 09:49:13 +0200 |
| commit | eed2f24c0d1138e9c46befd464548de538f0bb60 (patch) | |
| tree | e7ea8c760567f9ceada0bc65cd9663f54abcdd2d | |
| parent | 9e45f9d63c797baab2b3bd2574990ee94d3f80cb (diff) | |
| download | upstream-eed2f24c0d1138e9c46befd464548de538f0bb60.tar.gz upstream-eed2f24c0d1138e9c46befd464548de538f0bb60.tar.bz2 upstream-eed2f24c0d1138e9c46befd464548de538f0bb60.zip | |
kernel: fix mips MT_SMP kernel crash on cache flush
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | target/linux/generic/patches-4.4/100-MIPS-fix-MT_SMP-cacheflush.patch | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/100-MIPS-fix-MT_SMP-cacheflush.patch b/target/linux/generic/patches-4.4/100-MIPS-fix-MT_SMP-cacheflush.patch new file mode 100644 index 0000000000..14a10ba147 --- /dev/null +++ b/target/linux/generic/patches-4.4/100-MIPS-fix-MT_SMP-cacheflush.patch @@ -0,0 +1,17 @@ +Fix crash on cache flush with the MT_SMP variant + +Signed-off-by: Felix Fietkau <nbd@nbd.name> + +--- a/arch/mips/mm/c-r4k.c ++++ b/arch/mips/mm/c-r4k.c +@@ -60,8 +60,10 @@ static inline void r4k_on_each_cpu(void + * to restrict that call when a CM is not present because both + * CM-based SMP protocols (CMP & CPS) restrict index-based cache ops. + */ ++#ifndef CONFIG_MIPS_MT_SMP + if (!mips_cm_present()) + smp_call_function_many(&cpu_foreign_map, func, info, 1); ++#endif + func(info); + preempt_enable(); + } |