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Subject[PATCH V2 03/20] x86: Add entry trampolines to kcore
Date
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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