linux-kernel - [PATCH] x86/pkeys: fix pkeys build breakage for some non-x86 arches

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Message-Id: <20160912203842.48E7AC50@viggo.jf.intel.com>
Date:   Mon, 12 Sep 2016 13:38:42 -0700
From:   Dave Hansen <dave@...1.net>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, Dave Hansen <dave@...1.net>, dave.hansen@...el.com,
        arnd@...db.de, tglx@...utronix.de, linux-api@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: [PATCH] x86/pkeys: fix pkeys build breakage for some non-x86 arches


From: Dave Hansen <dave.hansen@...el.com>

Guenter Roeck reported [1] breakage on the h8300 and c6x
architectures (among others) caused by the new memory protection
keys syscalls.  This patch does what Arnd suggested and adds them
to kernel/sys_ni.c.

1. http://marc.info/?l=linux-kernel&m=147369214820072&w=2

Signed-off-by: Dave Hansen <dave.hansen@...el.com>
Tested-by: Guenter Roeck <linux@...ck-us.net>
Acked-by: Arnd Bergmann <arnd@...db.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: "open list:ABI/API" <linux-api@...r.kernel.org>
Cc: linux-arch@...r.kernel.org
---

 b/kernel/sys_ni.c |    5 +++++
 1 file changed, 5 insertions(+)

diff -puN kernel/sys_ni.c~fix-pkeys-arch-breakage kernel/sys_ni.c
--- a/kernel/sys_ni.c~fix-pkeys-arch-breakage	2016-09-12 13:35:17.449066541 -0700
+++ b/kernel/sys_ni.c	2016-09-12 13:35:17.452066676 -0700
@@ -250,3 +250,8 @@ cond_syscall(sys_execveat);
 
 /* membarrier */
 cond_syscall(sys_membarrier);
+
+/* memory protection keys */
+cond_syscall(sys_pkey_mprotect);
+cond_syscall(sys_pkey_alloc);
+cond_syscall(sys_pkey_free);
_