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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2016-03-17 21:41:07 +0000 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2016-03-17 21:41:07 +0000 |
| commit | b3aae4c6722b164477726b9120c919739d5c47c7 (patch) | |
| tree | 1b664b1bc381b1ac160aa7cabb7a616686dc60a9 /target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch | |
| parent | 4d6c4994fc609ac40884631ced2d4e4127c8958e (diff) | |
| download | master-31e0f0ae-b3aae4c6722b164477726b9120c919739d5c47c7.tar.gz master-31e0f0ae-b3aae4c6722b164477726b9120c919739d5c47c7.tar.bz2 master-31e0f0ae-b3aae4c6722b164477726b9120c919739d5c47c7.zip | |
kernel: update kernel 4.4 to version 4.4.6
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 49032
Diffstat (limited to 'target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch')
| -rw-r--r-- | target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch b/target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch deleted file mode 100644 index 6fe9d96ccc..0000000000 --- a/target/linux/generic/patches-4.4/103-MIPS-smp.c-Fix-uninitialised-temp_foreign_map.patch +++ /dev/null @@ -1,31 +0,0 @@ -From: James Hogan <james.hogan@imgtec.com> -Date: Fri, 4 Mar 2016 10:10:51 +0000 -Subject: [PATCH] MIPS: smp.c: Fix uninitialised temp_foreign_map - -When calculate_cpu_foreign_map() recalculates the cpu_foreign_map -cpumask it uses the local variable temp_foreign_map without initialising -it to zero. Since the calculation only ever sets bits in this cpumask -any existing bits at that memory location will remain set and find their -way into cpu_foreign_map too. This could potentially lead to cache -operations suboptimally doing smp calls to multiple VPEs in the same -core, even though the VPEs share primary caches. - -Therefore initialise temp_foreign_map using cpumask_clear() before use. - -Fixes: cccf34e9411c ("MIPS: c-r4k: Fix cache flushing for MT cores") -Signed-off-by: James Hogan <james.hogan@imgtec.com> -Cc: Ralf Baechle <ralf@linux-mips.org> -Cc: Paul Burton <paul.burton@imgtec.com> -Cc: linux-mips@linux-mips.org ---- - ---- a/arch/mips/kernel/smp.c -+++ b/arch/mips/kernel/smp.c -@@ -121,6 +121,7 @@ static inline void calculate_cpu_foreign - cpumask_t temp_foreign_map; - - /* Re-calculate the mask */ -+ cpumask_clear(&temp_foreign_map); - for_each_online_cpu(i) { - core_present = 0; - for_each_cpu(k, &temp_foreign_map) |