lkml.org 
[lkml]   [2017]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC v6 36/62] mm: introduce arch_pkeys_enabled()
Date
Only the architecture knows if it supports protection keys.
Hence introducing arch_pkeys_enabled().

This function is needed by arch neutral code.

One use case is -- to determine if the
protection key needs to be displayed in smaps.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
---
include/linux/pkeys.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/include/linux/pkeys.h b/include/linux/pkeys.h
index a1bacf1..d120810 100644
--- a/include/linux/pkeys.h
+++ b/include/linux/pkeys.h
@@ -34,6 +34,11 @@ static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
return 0;
}

+static inline bool arch_pkeys_enabled(void)
+{
+ return false;
+}
+
static inline void copy_init_pkru_to_fpregs(void)
{
}
--
1.7.1
\
 
 \ /
  Last update: 2017-07-16 06:07    [W:0.487 / U:12.628 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site