From: "Fenghua Yu" <fenghua.yu@intel.com>
To: "Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>,
"H Peter Anvin" <hpa@zytor.com>,
"Asit K Mallick" <asit.k.mallick@intel.com>,
"Bruce Schlobohm" <bruce.schlobohm@intel.com>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
"Fenghua Yu" <fenghua.yu@intel.com>
Subject: [PATCH 2/3] x86, cpu: Add SMEP CPU feature in CR4
Date: Wed, 11 May 2011 12:17:59 -0700 [thread overview]
Message-ID: <1305141480-843-3-git-send-email-fenghua.yu@intel.com> (raw)
In-Reply-To: <1305141480-843-1-git-send-email-fenghua.yu@intel.com>
From: Fenghua Yu <fenghua.yu@intel.com>
Add support for newly documented SMEP (Supervisor Mode Execution Protection)
CPU feature in CR4.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
arch/x86/include/asm/processor-flags.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h
index a898a2b..59ab4df 100644
--- a/arch/x86/include/asm/processor-flags.h
+++ b/arch/x86/include/asm/processor-flags.h
@@ -60,6 +60,7 @@
#define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */
#define X86_CR4_VMXE 0x00002000 /* enable VMX virtualization */
#define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */
+#define X86_CR4_SMEP 0x00100000 /* enable SMEP support */
/*
* x86-64 Task Priority Register, CR8
--
1.7.2
next prev parent reply other threads:[~2011-05-11 19:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-11 19:17 [PATCH 0/3] Enable SMEP CPU Feature Fenghua Yu
2011-05-11 19:17 ` [PATCH 1/3] x86, cpu: Add CPU flags for SMEP Fenghua Yu
2011-05-11 19:17 ` Fenghua Yu [this message]
2011-05-11 19:18 ` [PATCH 3/3] x86, cpu: Enable/disable SMEP Fenghua Yu
2011-05-11 22:36 ` Andi Kleen
2011-05-12 6:06 ` H. Peter Anvin
2011-05-12 6:59 ` Ingo Molnar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1305141480-843-3-git-send-email-fenghua.yu@intel.com \
--to=fenghua.yu@intel.com \
--cc=asit.k.mallick@intel.com \
--cc=bruce.schlobohm@intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome