diff options
Diffstat (limited to 'target/linux/generic/patches-4.9/040-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch')
| -rw-r--r-- | target/linux/generic/patches-4.9/040-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/target/linux/generic/patches-4.9/040-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch b/target/linux/generic/patches-4.9/040-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch deleted file mode 100644 index b2e90c8b9b..0000000000 --- a/target/linux/generic/patches-4.9/040-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch +++ /dev/null @@ -1,42 +0,0 @@ -From: Matt Redfearn <matt.redfearn@imgtec.com> -Date: Mon, 19 Dec 2016 14:20:57 +0000 -Subject: [PATCH] MIPS: Stack unwinding while on IRQ stack - -Within unwind stack, check if the stack pointer being unwound is within -the CPU's irq_stack and if so use that page rather than the task's stack -page. - -Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> ---- - ---- a/arch/mips/kernel/process.c -+++ b/arch/mips/kernel/process.c -@@ -33,6 +33,7 @@ - #include <asm/dsemul.h> - #include <asm/dsp.h> - #include <asm/fpu.h> -+#include <asm/irq.h> - #include <asm/msa.h> - #include <asm/pgtable.h> - #include <asm/mipsregs.h> -@@ -556,7 +557,19 @@ EXPORT_SYMBOL(unwind_stack_by_address); - unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, - unsigned long pc, unsigned long *ra) - { -- unsigned long stack_page = (unsigned long)task_stack_page(task); -+ unsigned long stack_page = 0; -+ int cpu; -+ -+ for_each_possible_cpu(cpu) { -+ if (on_irq_stack(cpu, *sp)) { -+ stack_page = (unsigned long)irq_stack[cpu]; -+ break; -+ } -+ } -+ -+ if (!stack_page) -+ stack_page = (unsigned long)task_stack_page(task); -+ - return unwind_stack_by_address(stack_page, sp, pc, ra); - } - #endif |