diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/cpu_entry_area.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index fab49fd5190f..076ebdce9bd4 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -3,6 +3,7 @@ #include <linux/spinlock.h> #include <linux/percpu.h> #include <linux/kallsyms.h> +#include <linux/kcore.h> #include <asm/cpu_entry_area.h> #include <asm/pgtable.h> @@ -14,6 +15,7 @@ static DEFINE_PER_CPU_PAGE_ALIGNED(struct entry_stack_page, entry_stack_storage) #ifdef CONFIG_X86_64 static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks [(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ]); +static DEFINE_PER_CPU(struct kcore_list, kcore_entry_trampoline); #endif struct cpu_entry_area *get_cpu_entry_area(int cpu) @@ -147,6 +149,14 @@ static void __init setup_cpu_entry_area(int cpu) cea_set_pte(&get_cpu_entry_area(cpu)->entry_trampoline, __pa_symbol(_entry_trampoline), PAGE_KERNEL_RX); + /* + * The cpu_entry_area alias addresses are not in the kernel binary + * so they do not show up in /proc/kcore normally. This adds entries + * for them manually. + */ + kclist_add_remap(&per_cpu(kcore_entry_trampoline, cpu), + _entry_trampoline, + &get_cpu_entry_area(cpu)->entry_trampoline, PAGE_SIZE); #endif percpu_setup_debug_store(cpu); } |