Display the pkey number associated with the vma in smaps of a task.
The key will be seen as below:
ProtectionKey: 0
Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx>
---
arch/powerpc/kernel/setup_64.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f35ff9d..ebc82b3 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -37,6 +37,7 @@
#include <linux/memblock.h>
#include <linux/memory.h>
#include <linux/nmi.h>
+#include <linux/pkeys.h>
#include <asm/io.h>
#include <asm/kdump.h>
@@ -745,3 +746,10 @@ static int __init disable_hardlockup_detector(void)
}
early_initcall(disable_hardlockup_detector);
#endif
+
+#ifdef CONFIG_PPC64_MEMORY_PROTECTION_KEYS
+void arch_show_smap(struct seq_file *m, struct vm_area_struct *vma)
+{
+ seq_printf(m, "ProtectionKey: %8u\n", vma_pkey(vma));
+}
+#endif /* CONFIG_PPC64_MEMORY_PROTECTION_KEYS */
--
1.7.1
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