From: Dave Hansen <dave@sr71.net>
To: bp@alien8.de
Cc: x86@kernel.org, hpa@zytor.com, qiaowei.ren@intel.com,
linux-kernel@vger.kernel.org, Dave Hansen <dave@sr71.net>
Subject: [PATCH 4/4] x86: add MPX to disaabled features
Date: Wed, 02 Jul 2014 09:29:30 -0700 [thread overview]
Message-ID: <20140702162930.6209A1AA@viggo.jf.intel.com> (raw)
In-Reply-To: <20140702162925.B07A3AB9@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
This will go in to the MPX patch set, but I'm posting it here so
folk can see how it will work since it was the original
motivation for this work.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
---
b/arch/x86/include/asm/disabled-features.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff -puN arch/x86/include/asm/disabled-features.h~x86-diabled-features-mpx arch/x86/include/asm/disabled-features.h
--- a/arch/x86/include/asm/disabled-features.h~x86-diabled-features-mpx 2014-07-02 09:16:34.368863016 -0700
+++ b/arch/x86/include/asm/disabled-features.h 2014-07-02 09:16:34.371863152 -0700
@@ -10,6 +10,12 @@
* cpu_feature_enabled().
*/
+#ifdef CONFIG_X86_INTEL_MPX
+# define DISABLE_MPX 0
+#else
+# define DISABLE_MPX (1<<(X86_FEATURE_MPX & 31))
+#endif
+
#ifdef CONFIG_X86_64
# define DISABLE_VME (1<<(X86_FEATURE_VME & 31))
# define DISABLE_K6_MTRR (1<<(X86_FEATURE_K6_MTRR & 31))
@@ -34,6 +40,6 @@
#define DISABLED_MASK6 0
#define DISABLED_MASK7 0
#define DISABLED_MASK8 0
-#define DISABLED_MASK9 0
+#define DISABLED_MASK9 (DISABLE_MPX)
#endif /* _ASM_X86_DISABLED_FEATURES_H */
_
next prev parent reply other threads:[~2014-07-02 16:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-02 16:29 [PATCH 0/4] [v3] x86 disabled features macros Dave Hansen
2014-07-02 16:29 ` [PATCH 1/4] x86: axe the lightly-used cpu_has_pae Dave Hansen
2014-07-02 19:19 ` Borislav Petkov
2014-07-02 16:29 ` [PATCH 2/4] x86: introduce disabled-features Dave Hansen
2014-07-02 19:27 ` Borislav Petkov
2014-07-02 16:29 ` [PATCH 3/4] x86: add more disabled features Dave Hansen
2014-07-02 19:34 ` Borislav Petkov
2014-07-02 16:29 ` Dave Hansen [this message]
2014-07-02 19:43 ` [PATCH 4/4] x86: add MPX to disaabled features Borislav Petkov
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