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* [PATCH 0/3] tip-queue 2015-10-30
@ 2015-10-30 12:11 Borislav Petkov
  2015-10-30 12:11 ` [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit Borislav Petkov
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Borislav Petkov @ 2015-10-30 12:11 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: LKML

From: Borislav Petkov <bp@suse.de>

Hi Ingo,

please queue those non-critical platform enablement patches.

Thanks.

Aravind Gopalakrishnan (1):
  x86/mce: Add a Scalable MCA vendor flags bit

Borislav Petkov (1):
  x86/mce: Add a default case to the switch in
    __mcheck_cpu_ancient_init()

Wan Zongshun (1):
  x86/cpu: Add CLZERO detection

 arch/x86/include/asm/cpufeature.h |  5 ++++-
 arch/x86/include/asm/mce.h        | 34 +++++++++++++++++++++-------------
 arch/x86/kernel/cpu/common.c      |  1 +
 arch/x86/kernel/cpu/mcheck/mce.c  |  4 ++++
 4 files changed, 30 insertions(+), 14 deletions(-)

-- 
2.3.5


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit
  2015-10-30 12:11 [PATCH 0/3] tip-queue 2015-10-30 Borislav Petkov
@ 2015-10-30 12:11 ` Borislav Petkov
  2015-11-01 10:27   ` [tip:ras/core] " tip-bot for Aravind Gopalakrishnan
  2015-10-30 12:11 ` [PATCH 2/3] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init() Borislav Petkov
  2015-10-30 12:11 ` [PATCH 3/3] x86/cpu: Add CLZERO detection Borislav Petkov
  2 siblings, 1 reply; 7+ messages in thread
From: Borislav Petkov @ 2015-10-30 12:11 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: LKML

From: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>

Scalable MCA (SMCA) is a new feature in AMD Fam17h processors which
indicates presence of MCA extensions.

MCA extensions expands existing register space for the MCE banks and
also introduces a new MSR range to accommodate new banks.

Add the detection bit.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/1446059010-28010-2-git-send-email-Aravind.Gopalakrishnan@amd.com
[ Reformat mce_vendor_flags definitions and save indentation levels. Improve
  comments. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/include/asm/mce.h       | 34 +++++++++++++++++++++-------------
 arch/x86/kernel/cpu/mcheck/mce.c |  2 ++
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 2dbc0bf2b9f3..2ea4527e462f 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -123,19 +123,27 @@ struct mca_config {
 };
 
 struct mce_vendor_flags {
-			/*
-			 * overflow recovery cpuid bit indicates that overflow
-			 * conditions are not fatal
-			 */
-	__u64		overflow_recov	: 1,
-
-			/*
-			 * SUCCOR stands for S/W UnCorrectable error COntainment
-			 * and Recovery. It indicates support for data poisoning
-			 * in HW and deferred error interrupts.
-			 */
-			succor		: 1,
-			__reserved_0	: 62;
+	/*
+	 * Indicates that overflow conditions are not fatal, when set.
+	 */
+	__u64 overflow_recov	: 1,
+
+	/*
+	 * (AMD) SUCCOR stands for S/W UnCorrectable error COntainment and
+	 * Recovery. It indicates support for data poisoning in HW and deferred
+	 * error interrupts.
+	 */
+	      succor		: 1,
+
+	/*
+	 * (AMD) SMCA: This bit indicates support for Scalable MCA which expands
+	 * the register space for each MCA bank and also increases number of
+	 * banks. Also, to accommodate the new banks and registers, the MCA
+	 * register space is moved to a new MSR range.
+	 */
+	      smca		: 1,
+
+	      __reserved_0	: 61;
 };
 extern struct mce_vendor_flags mce_flags;
 
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 9d014b82a124..c7c59d13e3f4 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1605,6 +1605,8 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
 		mce_amd_feature_init(c);
 		mce_flags.overflow_recov = !!(ebx & BIT(0));
 		mce_flags.succor	 = !!(ebx & BIT(1));
+		mce_flags.smca		 = !!(ebx & BIT(3));
+
 		break;
 		}
 
-- 
2.3.5


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH 2/3] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init()
  2015-10-30 12:11 [PATCH 0/3] tip-queue 2015-10-30 Borislav Petkov
  2015-10-30 12:11 ` [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit Borislav Petkov
@ 2015-10-30 12:11 ` Borislav Petkov
  2015-11-01 10:28   ` [tip:ras/core] " tip-bot for Borislav Petkov
  2015-10-30 12:11 ` [PATCH 3/3] x86/cpu: Add CLZERO detection Borislav Petkov
  2 siblings, 1 reply; 7+ messages in thread
From: Borislav Petkov @ 2015-10-30 12:11 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: LKML

From: Borislav Petkov <bp@suse.de>

Caught by building with W= which enable -Wswitch-default also.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/kernel/cpu/mcheck/mce.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c7c59d13e3f4..78c6f8d65d58 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1586,6 +1586,8 @@ static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
 		winchip_mcheck_init(c);
 		return 1;
 		break;
+	default:
+		return 0;
 	}
 
 	return 0;
-- 
2.3.5


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH 3/3] x86/cpu: Add CLZERO detection
  2015-10-30 12:11 [PATCH 0/3] tip-queue 2015-10-30 Borislav Petkov
  2015-10-30 12:11 ` [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit Borislav Petkov
  2015-10-30 12:11 ` [PATCH 2/3] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init() Borislav Petkov
@ 2015-10-30 12:11 ` Borislav Petkov
  2015-11-01 10:28   ` [tip:x86/cpu] " tip-bot for Wan Zongshun
  2 siblings, 1 reply; 7+ messages in thread
From: Borislav Petkov @ 2015-10-30 12:11 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: LKML

From: Wan Zongshun <Vincent.Wan@amd.com>

AMD Fam17h processors introduce support for the CLZERO instruction. It
zeroes out the 64 byte cache line specified in RAX.

Add the bit here to allow /proc/cpuinfo to list the feature.

Boris: we're adding this as a separate ->x86_capability leaf because
CPUID_80000008_EBX is going to contain more feature bits and it will
fill out with time.

Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/1446059010-28010-3-git-send-email-Aravind.Gopalakrishnan@amd.com
[Wrap code in patch form, fix comments. ]
Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/include/asm/cpufeature.h | 5 ++++-
 arch/x86/kernel/cpu/common.c      | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 9727b3b48bd1..e4f8010f22e0 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -12,7 +12,7 @@
 #include <asm/disabled-features.h>
 #endif
 
-#define NCAPINTS	13	/* N 32-bit words worth of info */
+#define NCAPINTS	14	/* N 32-bit words worth of info */
 #define NBUGINTS	1	/* N 32-bit bug flags */
 
 /*
@@ -255,6 +255,9 @@
 /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */
 #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */
 
+/* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */
+#define X86_FEATURE_CLZERO	(13*32+0) /* CLZERO instruction */
+
 /*
  * BUG word(s)
  */
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index de22ea7ff82f..4ddd780aeac9 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -670,6 +670,7 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
 
 		c->x86_virt_bits = (eax >> 8) & 0xff;
 		c->x86_phys_bits = eax & 0xff;
+		c->x86_capability[13] = cpuid_ebx(0x80000008);
 	}
 #ifdef CONFIG_X86_32
 	else if (cpu_has(c, X86_FEATURE_PAE) || cpu_has(c, X86_FEATURE_PSE36))
-- 
2.3.5


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [tip:ras/core] x86/mce: Add a Scalable MCA vendor flags bit
  2015-10-30 12:11 ` [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit Borislav Petkov
@ 2015-11-01 10:27   ` tip-bot for Aravind Gopalakrishnan
  0 siblings, 0 replies; 7+ messages in thread
From: tip-bot for Aravind Gopalakrishnan @ 2015-11-01 10:27 UTC (permalink / raw)
  To: linux-tip-commits
  Cc: ashok.raj, bp, peterz, Aravind.Gopalakrishnan, linux-kernel,
	tony.luck, torvalds, linux-edac, hpa, tglx, mingo, bp

Commit-ID:  c7f54d21fb02e90042e6233b46716dcb244e70e6
Gitweb:     http://git.kernel.org/tip/c7f54d21fb02e90042e6233b46716dcb244e70e6
Author:     Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
AuthorDate: Fri, 30 Oct 2015 13:11:37 +0100
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 1 Nov 2015 11:26:13 +0100

x86/mce: Add a Scalable MCA vendor flags bit

Scalable MCA (SMCA) is a new feature in AMD Fam17h processors
which indicates presence of MCA extensions.

MCA extensions expands existing register space for the MCE banks
and also introduces a new MSR range to accommodate new banks.

Add the detection bit.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Reformat mce_vendor_flags definitions and save indentation levels. Improve comments. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1446207099-24948-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/include/asm/mce.h       | 34 +++++++++++++++++++++-------------
 arch/x86/kernel/cpu/mcheck/mce.c |  2 ++
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 2dbc0bf..2ea4527 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -123,19 +123,27 @@ struct mca_config {
 };
 
 struct mce_vendor_flags {
-			/*
-			 * overflow recovery cpuid bit indicates that overflow
-			 * conditions are not fatal
-			 */
-	__u64		overflow_recov	: 1,
-
-			/*
-			 * SUCCOR stands for S/W UnCorrectable error COntainment
-			 * and Recovery. It indicates support for data poisoning
-			 * in HW and deferred error interrupts.
-			 */
-			succor		: 1,
-			__reserved_0	: 62;
+	/*
+	 * Indicates that overflow conditions are not fatal, when set.
+	 */
+	__u64 overflow_recov	: 1,
+
+	/*
+	 * (AMD) SUCCOR stands for S/W UnCorrectable error COntainment and
+	 * Recovery. It indicates support for data poisoning in HW and deferred
+	 * error interrupts.
+	 */
+	      succor		: 1,
+
+	/*
+	 * (AMD) SMCA: This bit indicates support for Scalable MCA which expands
+	 * the register space for each MCA bank and also increases number of
+	 * banks. Also, to accommodate the new banks and registers, the MCA
+	 * register space is moved to a new MSR range.
+	 */
+	      smca		: 1,
+
+	      __reserved_0	: 61;
 };
 extern struct mce_vendor_flags mce_flags;
 
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 17b5ec6..3d631c4 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1605,6 +1605,8 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
 		mce_amd_feature_init(c);
 		mce_flags.overflow_recov = !!(ebx & BIT(0));
 		mce_flags.succor	 = !!(ebx & BIT(1));
+		mce_flags.smca		 = !!(ebx & BIT(3));
+
 		break;
 		}
 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* [tip:ras/core] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init()
  2015-10-30 12:11 ` [PATCH 2/3] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init() Borislav Petkov
@ 2015-11-01 10:28   ` tip-bot for Borislav Petkov
  0 siblings, 0 replies; 7+ messages in thread
From: tip-bot for Borislav Petkov @ 2015-11-01 10:28 UTC (permalink / raw)
  To: linux-tip-commits
  Cc: mingo, linux-kernel, torvalds, tony.luck, bp, hpa, bp, peterz, tglx

Commit-ID:  dc34bdd2367fd31744ee3ba1de1b1cc0fa2ce193
Gitweb:     http://git.kernel.org/tip/dc34bdd2367fd31744ee3ba1de1b1cc0fa2ce193
Author:     Borislav Petkov <bp@suse.de>
AuthorDate: Fri, 30 Oct 2015 13:11:38 +0100
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 1 Nov 2015 11:26:14 +0100

x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init()

Caught by building with W= which enable -Wswitch-default also.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1446207099-24948-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/kernel/cpu/mcheck/mce.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 3d631c4..c5b0d56 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1586,6 +1586,8 @@ static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
 		winchip_mcheck_init(c);
 		return 1;
 		break;
+	default:
+		return 0;
 	}
 
 	return 0;

^ permalink raw reply	[flat|nested] 7+ messages in thread

* [tip:x86/cpu] x86/cpu: Add CLZERO detection
  2015-10-30 12:11 ` [PATCH 3/3] x86/cpu: Add CLZERO detection Borislav Petkov
@ 2015-11-01 10:28   ` tip-bot for Wan Zongshun
  0 siblings, 0 replies; 7+ messages in thread
From: tip-bot for Wan Zongshun @ 2015-11-01 10:28 UTC (permalink / raw)
  To: linux-tip-commits
  Cc: hpa, mingo, tony.luck, bp, Vincent.Wan, ray.huang, dvlasenk, bp,
	tglx, aravind.gopalakrishnan, peterz, linux-kernel, torvalds,
	luto

Commit-ID:  2167ceabf34163727ca4e283c0f030e3960932e5
Gitweb:     http://git.kernel.org/tip/2167ceabf34163727ca4e283c0f030e3960932e5
Author:     Wan Zongshun <Vincent.Wan@amd.com>
AuthorDate: Fri, 30 Oct 2015 13:11:39 +0100
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 1 Nov 2015 11:26:23 +0100

x86/cpu: Add CLZERO detection

AMD Fam17h processors introduce support for the CLZERO
instruction. It zeroes out the 64 byte cache line specified in
RAX.

Add the bit here to allow /proc/cpuinfo to list the feature.

Boris: we're adding this as a separate ->x86_capability leaf
because CPUID_80000008_EBX is going to contain more feature bits
and it will fill out with time.

Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com>
Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
[ Wrap code in patch form, fix comments. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1446207099-24948-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/include/asm/cpufeature.h | 5 ++++-
 arch/x86/kernel/cpu/common.c      | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 9727b3b..e4f8010 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -12,7 +12,7 @@
 #include <asm/disabled-features.h>
 #endif
 
-#define NCAPINTS	13	/* N 32-bit words worth of info */
+#define NCAPINTS	14	/* N 32-bit words worth of info */
 #define NBUGINTS	1	/* N 32-bit bug flags */
 
 /*
@@ -255,6 +255,9 @@
 /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */
 #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */
 
+/* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */
+#define X86_FEATURE_CLZERO	(13*32+0) /* CLZERO instruction */
+
 /*
  * BUG word(s)
  */
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index de22ea7..4ddd780 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -670,6 +670,7 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
 
 		c->x86_virt_bits = (eax >> 8) & 0xff;
 		c->x86_phys_bits = eax & 0xff;
+		c->x86_capability[13] = cpuid_ebx(0x80000008);
 	}
 #ifdef CONFIG_X86_32
 	else if (cpu_has(c, X86_FEATURE_PAE) || cpu_has(c, X86_FEATURE_PSE36))

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2015-11-01 10:29 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-10-30 12:11 [PATCH 0/3] tip-queue 2015-10-30 Borislav Petkov
2015-10-30 12:11 ` [PATCH 1/3] x86/mce: Add a Scalable MCA vendor flags bit Borislav Petkov
2015-11-01 10:27   ` [tip:ras/core] " tip-bot for Aravind Gopalakrishnan
2015-10-30 12:11 ` [PATCH 2/3] x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init() Borislav Petkov
2015-11-01 10:28   ` [tip:ras/core] " tip-bot for Borislav Petkov
2015-10-30 12:11 ` [PATCH 3/3] x86/cpu: Add CLZERO detection Borislav Petkov
2015-11-01 10:28   ` [tip:x86/cpu] " tip-bot for Wan Zongshun

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