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| author | Felix Fietkau <nbd@nbd.name> | 2017-01-11 10:57:49 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2017-01-15 18:25:54 +0100 |
| commit | 1708644f1915eb7587a904d81da0ef0b559d1567 (patch) | |
| tree | 15fd746c87d428ef513ee95fc69ded44fbf7e2ea /target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch | |
| parent | b02636fcb4b16d437442f817a60a30e9b7ce4ed2 (diff) | |
| download | mtk-20170518-1708644f1915eb7587a904d81da0ef0b559d1567.zip mtk-20170518-1708644f1915eb7587a904d81da0ef0b559d1567.tar.gz mtk-20170518-1708644f1915eb7587a904d81da0ef0b559d1567.tar.bz2 | |
kernel: backport MIPS changes introducing a separate IRQ stack
Prevents crashes when IRQs arrive when the current kernel stack context
already contains deeply nested function calls, e.g. when stacking lots
of network devices on top of each other
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch')
| -rw-r--r-- | target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch b/target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch new file mode 100644 index 0000000..a4942b8 --- /dev/null +++ b/target/linux/generic/patches-4.4/062-05-MIPS-Select-HAVE_IRQ_EXIT_ON_IRQ_STACK.patch @@ -0,0 +1,21 @@ +From: Matt Redfearn <matt.redfearn@imgtec.com> +Date: Mon, 19 Dec 2016 14:21:00 +0000 +Subject: [PATCH] MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK + +Since do_IRQ is now invoked on a separate IRQ stack, we select +HAVE_IRQ_EXIT_ON_IRQ_STACK so that softirq's may be invoked directly +from irq_exit(), rather than requiring do_softirq_own_stack. + +Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> +--- + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -9,6 +9,7 @@ config MIPS + select HAVE_CONTEXT_TRACKING + select HAVE_GENERIC_DMA_COHERENT + select HAVE_IDE ++ select HAVE_IRQ_EXIT_ON_IRQ_STACK + select HAVE_OPROFILE + select HAVE_PERF_EVENTS + select PERF_USE_VMALLOC |