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From: Fenghua Yu <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>, "H Peter Anvin" <hpa@zytor.com>,
	"Dave Hansen" <dave.hansen@intel.com>,
	"Ashok Raj" <ashok.raj@intel.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Michael Chan" <michael.chan@broadcom.com>,
	"Ravi V Shankar" <ravi.v.shankar@intel.com>,
	"Ricardo Neri" <ricardo.neri@intel.com>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
	"x86" <x86@kernel.org>, Fenghua Yu <fenghua.yu@intel.com>
Subject: [PATCH v3 09/10] x86/split_lock: Define #AC for split lock feature
Date: Fri,  1 Feb 2019 21:14:50 -0800	[thread overview]
Message-ID: <1549084491-57808-10-git-send-email-fenghua.yu@intel.com> (raw)
In-Reply-To: <1549084491-57808-1-git-send-email-fenghua.yu@intel.com>

The feature is Linux specific. If the feature is enumerated or
enabled by "setcpuid=ac_split_lock", the bit is set.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 6d6122524711..125a490e4182 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -221,6 +221,7 @@
 #define X86_FEATURE_ZEN			( 7*32+28) /* "" CPU is AMD family 0x17 (Zen) */
 #define X86_FEATURE_L1TF_PTEINV		( 7*32+29) /* "" L1TF workaround PTE inversion */
 #define X86_FEATURE_IBRS_ENHANCED	( 7*32+30) /* Enhanced IBRS */
+#define X86_FEATURE_AC_SPLIT_LOCK	( 7*32+31) /* #AC for split lock */
 
 /* Virtualization flags: Linux defined, word 8 */
 #define X86_FEATURE_TPR_SHADOW		( 8*32+ 0) /* Intel TPR Shadow */
-- 
2.7.4


  parent reply	other threads:[~2019-02-02  5:21 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-02  5:14 [PATCH v3 00/10] x86/split_lock: Enable #AC exception for split locked accesses Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 01/10] x86/common: Align cpu_caps_cleared and cpu_caps_set to unsigned long Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 02/10] drivers/net/b44: Align pwol_mask to unsigned long for better performance Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 03/10] wlcore: Align reg_ch_conf_pending and tmp_ch_bitmap " Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 04/10] x86/split_lock: Align x86_capability to unsigned long to avoid split locked access Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 05/10] x86/clearcpuid: Support multiple clearcpuid options Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 06/10] x86/clearcpuid: Support feature flag string in kernel option clearcpuid Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 07/10] Change document for " Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 08/10] x86/setcpuid: Add kernel option setcpuid Fenghua Yu
2019-02-04 17:49   ` Thomas Gleixner
2019-02-04 19:05     ` Dave Hansen
2019-02-04 19:57       ` Borislav Petkov
2019-02-04 20:46         ` Dave Hansen
2019-02-04 21:40           ` Borislav Petkov
2019-02-04 22:14             ` Fenghua Yu
2019-02-05  6:10               ` Borislav Petkov
2019-02-04 23:24             ` Dave Hansen
2019-02-05  6:18               ` Borislav Petkov
2019-02-05 16:46                 ` Dave Hansen
2019-02-05 17:09                   ` Peter Zijlstra
2019-02-05  8:57               ` Peter Zijlstra
2019-02-05 13:15                 ` Peter Zijlstra
2019-02-05  8:48           ` Peter Zijlstra
2019-02-05 15:19             ` Dave Hansen
2019-02-05 15:43               ` Borislav Petkov
2019-02-05 18:26                 ` Fenghua Yu
2019-02-05 17:04               ` Peter Zijlstra
2019-02-10 19:20                 ` Thomas Gleixner
2019-02-11 19:16                   ` Fenghua Yu
2019-02-12 13:37                     ` Peter Zijlstra
2019-02-12 13:51                       ` Thomas Gleixner
2019-02-12 16:48                         ` Peter Zijlstra
2019-02-12 16:50                           ` Dave Hansen
2019-02-12 17:52                           ` Yu, Fenghua
2019-02-04 21:09       ` Fenghua Yu
2019-02-05  8:51         ` Peter Zijlstra
2019-02-05 15:21           ` Dave Hansen
2019-02-05 15:34             ` Peter Zijlstra
2019-02-02  5:14 ` Fenghua Yu [this message]
2019-02-04 18:41   ` [PATCH v3 09/10] x86/split_lock: Define #AC for split lock feature Dave Hansen
2019-02-04 18:45     ` Fenghua Yu
2019-02-04 19:00       ` Dave Hansen
2019-02-04 19:03         ` Fenghua Yu
2019-02-02  5:14 ` [PATCH v3 10/10] x86/split_lock: Handle #AC exception for split lock Fenghua Yu
2019-02-04 11:00   ` kbuild test robot
2019-02-04 14:43   ` kbuild test robot
2019-02-11 10:53   ` Ingo Molnar
2019-02-11 18:10     ` Fenghua Yu
2019-02-13  8:14       ` Ingo Molnar
2019-02-13 14:37         ` Yu, Fenghua

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