From: Dave Hansen <dave@sr71.net>
To: dave@sr71.net
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [PATCH 02/12] x86, pku: define new CR4 bit
Date: Thu, 07 May 2015 10:41:33 -0700 [thread overview]
Message-ID: <20150507174133.F07CBF8C@viggo.jf.intel.com> (raw)
In-Reply-To: <20150507174132.34AF8FAF@viggo.jf.intel.com>
There is a new bit in CR4 for enabling protection keys.
---
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-1-cr4, arch/x86/include/uapi/asm/processor-flags.h
--- a/arch/x86/include/uapi/asm/processor-flags.h~pkeys-1-cr4, 2015-05-07 10:31:41.384187278 -0700
+++ b/arch/x86/include/uapi/asm/processor-flags.h 2015-05-07 10:31:41.387187413 -0700
@@ -120,6 +120,8 @@
#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
_
next prev parent reply other threads:[~2015-05-07 17:43 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-07 17:41 [PATCH 00/12] [RFC] x86: Memory Protection Keys Dave Hansen
2015-05-07 17:41 ` [PATCH 01/12] x86, pkeys: cpuid bit definition Dave Hansen
2015-05-07 17:41 ` Dave Hansen [this message]
2015-05-07 17:41 ` [PATCH 03/12] x86, pkey: pkru xsave fields and data structure Dave Hansen
2015-05-07 17:41 ` [PATCH 06/12] x86, pkeys: store protection in high VMA flags Dave Hansen
2015-05-15 21:10 ` Thomas Gleixner
2015-05-15 21:13 ` Dave Hansen
2015-05-07 17:41 ` [PATCH 04/12] x86, pkeys: PTE bits Dave Hansen
2015-05-07 17:41 ` [PATCH 05/12] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2015-05-07 17:41 ` [PATCH 08/12] x86, pkeys: arch-specific protection bits Dave Hansen
2015-05-07 17:41 ` [PATCH 07/12] mm: Pass the 4-bit protection key in via PROT_ bits to syscalls Dave Hansen
2015-05-07 19:11 ` One Thousand Gnomes
2015-05-07 19:19 ` Dave Hansen
2015-09-04 20:13 ` Florian Weimer
2015-09-04 20:18 ` Dave Hansen
2015-09-04 20:34 ` Florian Weimer
2015-09-04 20:41 ` Dave Hansen
2015-05-07 17:41 ` [PATCH 10/12] x86, pkeys: differentiate Protection Key faults from normal Dave Hansen
2015-05-07 17:41 ` [PATCH 11/12] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2015-05-07 17:41 ` [PATCH 09/12] x86, pkeys: notify userspace about protection key faults Dave Hansen
2015-05-07 17:41 ` [PATCH 12/12] x86, pkeys: Documentation Dave Hansen
2015-05-07 17:57 ` [PATCH 00/12] [RFC] x86: Memory Protection Keys Ingo Molnar
2015-05-07 18:09 ` Dave Hansen
2015-05-07 18:48 ` Vlastimil Babka
2015-05-07 21:45 ` Dave Hansen
2015-05-09 19:09 ` Dr. David Alan Gilbert
2015-05-07 19:18 ` One Thousand Gnomes
2015-05-07 19:26 ` Ingo Molnar
2015-05-07 19:40 ` Dave Hansen
2015-05-07 20:11 ` One Thousand Gnomes
2015-05-08 4:51 ` Ingo Molnar
2015-05-08 6:09 ` Kevin Easton
2015-05-07 19:22 ` Christian Borntraeger
2015-05-07 19:29 ` Dave Hansen
2015-05-07 19:45 ` Christian Borntraeger
2015-05-07 19:49 ` Dave Hansen
2015-05-07 19:57 ` Christian Borntraeger
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