diff options
Diffstat (limited to 'arch/arm64/kernel/irq.c')
| -rw-r--r-- | arch/arm64/kernel/irq.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c index 9cf2fb87584a..dfb1feab867d 100644 --- a/arch/arm64/kernel/irq.c +++ b/arch/arm64/kernel/irq.c @@ -17,6 +17,7 @@ #include <linux/init.h> #include <linux/irqchip.h> #include <linux/kprobes.h> +#include <linux/scs.h> #include <linux/seq_file.h> #include <linux/vmalloc.h> #include <asm/daifflags.h> @@ -27,6 +28,25 @@ DEFINE_PER_CPU(struct nmi_ctx, nmi_contexts); DEFINE_PER_CPU(unsigned long *, irq_stack_ptr); + +DECLARE_PER_CPU(unsigned long *, irq_shadow_call_stack_ptr); + +#ifdef CONFIG_SHADOW_CALL_STACK +DEFINE_PER_CPU(unsigned long *, irq_shadow_call_stack_ptr); +#endif + +static void init_irq_scs(void) +{ + int cpu; + + if (!IS_ENABLED(CONFIG_SHADOW_CALL_STACK)) + return; + + for_each_possible_cpu(cpu) + per_cpu(irq_shadow_call_stack_ptr, cpu) = + scs_alloc(cpu_to_node(cpu)); +} + #ifdef CONFIG_VMAP_STACK static void init_irq_stacks(void) { @@ -54,6 +74,7 @@ static void init_irq_stacks(void) void __init init_IRQ(void) { init_irq_stacks(); + init_irq_scs(); irqchip_init(); if (!handle_arch_irq) panic("No interrupt controller found."); @@ -67,18 +88,3 @@ void __init init_IRQ(void) local_daif_restore(DAIF_PROCCTX_NOIRQ); } } - -/* - * Stubs to make nmi_enter/exit() code callable from ASM - */ -asmlinkage void notrace asm_nmi_enter(void) -{ - nmi_enter(); -} -NOKPROBE_SYMBOL(asm_nmi_enter); - -asmlinkage void notrace asm_nmi_exit(void) -{ - nmi_exit(); -} -NOKPROBE_SYMBOL(asm_nmi_exit); |