[PATCH 04/25] x86, pku: define new CR4 bit

From: Dave Hansen
Date: Mon Sep 28 2015 - 15:26:08 EST



From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

There is a new bit in CR4 for enabling protection keys. We
will actually enable it later in the series.

Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
---

b/arch/x86/include/uapi/asm/processor-flags.h | 2 ++
1 file changed, 2 insertions(+)

diff -puN arch/x86/include/uapi/asm/processor-flags.h~pkeys-02-cr4 arch/x86/include/uapi/asm/processor-flags.h
--- a/arch/x86/include/uapi/asm/processor-flags.h~pkeys-02-cr4 2015-09-28 11:39:42.787039064 -0700
+++ b/arch/x86/include/uapi/asm/processor-flags.h 2015-09-28 11:39:42.790039200 -0700
@@ -118,6 +118,8 @@
#define X86_CR4_SMEP _BITUL(X86_CR4_SMEP_BIT)
#define X86_CR4_SMAP_BIT 21 /* enable SMAP support */
#define X86_CR4_SMAP _BITUL(X86_CR4_SMAP_BIT)
+#define X86_CR4_PKE_BIT 22 /* enable Protection Keys support */
+#define X86_CR4_PKE _BITUL(X86_CR4_PKE_BIT)

/*
* x86-64 Task Priority Register, CR8
_
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/