Messages in this thread Patch in this message | | | From | Adrian Hunter <> | Subject | [PATCH RFC 03/19] x86: Add entry trampolines to kcore | Date | Wed, 9 May 2018 14:43:32 +0300 |
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From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> --- arch/x86/mm/cpu_entry_area.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index d1da5cf4b2de..fb1fbc8538fa 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 @@ #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 +149,9 @@ 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); + kclist_add(&per_cpu(kcore_entry_trampoline, cpu), + &get_cpu_entry_area(cpu)->entry_trampoline, PAGE_SIZE, + KCORE_TEXT); #endif percpu_setup_debug_store(cpu); } -- 1.9.1
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