From: Wyes Karny <wyes.karny@amd.com>
To: <linux-kernel@vger.kernel.org>
Cc: <Lewis.Carroll@amd.com>, <Mario.Limonciello@amd.com>,
<gautham.shenoy@amd.com>, <Ananth.Narayan@amd.com>,
<bharata@amd.com>, <len.brown@intel.com>, <x86@kernel.org>,
<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<dave.hansen@linux.intel.com>, <hpa@zytor.com>,
<peterz@infradead.org>, <chang.seok.bae@intel.com>,
<keescook@chromium.org>, <metze@samba.org>,
<zhengqi.arch@bytedance.com>, <mark.rutland@arm.com>,
<puwen@hygon.cn>, <rafael.j.wysocki@intel.com>,
<andrew.cooper3@citrix.com>, <jing2.liu@intel.com>,
<jmattson@google.com>, <pawan.kumar.gupta@linux.intel.com>
Subject: [PATCH v2 3/3] x86: Fix comment for X86_FEATURE_ZEN
Date: Thu, 5 May 2022 16:34:29 +0530 [thread overview]
Message-ID: <20220505110429.453279-1-wyes.karny@amd.com> (raw)
In-Reply-To: <20220505104856.452311-1-wyes.karny@amd.com>
The feature X86_FEATURE_ZEN implies that the CPU supports Zen
microarchitecture. Call this out explicitly in the comment.
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
---
arch/x86/include/asm/cpufeatures.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 73e643ae94b6..c851ab4e45b9 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -219,7 +219,7 @@
#define X86_FEATURE_IBRS ( 7*32+25) /* Indirect Branch Restricted Speculation */
#define X86_FEATURE_IBPB ( 7*32+26) /* Indirect Branch Prediction Barrier */
#define X86_FEATURE_STIBP ( 7*32+27) /* Single Thread Indirect Branch Predictors */
-#define X86_FEATURE_ZEN ( 7*32+28) /* "" CPU is AMD family 0x17 or above (Zen) */
+#define X86_FEATURE_ZEN (7*32+28) /* "" CPU supports Zen microarchitecture */
#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_MSR_IA32_FEAT_CTL ( 7*32+31) /* "" MSR IA32_FEAT_CTL configured */
--
2.27.0
next prev parent reply other threads:[~2022-05-05 11:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-05 10:48 [PATCH v2 0/3] x86: Prefer MWAIT over HALT on AMD processors Wyes Karny
2022-05-05 10:48 ` [PATCH v2 1/3] x86: Use HALT in default_idle when idle=nomwait cmdline arg is passed Wyes Karny
2022-05-05 17:13 ` Dave Hansen
2022-05-06 11:23 ` Wyes Karny
2022-05-05 11:01 ` [PATCH v2 2/3] x86: Remove vendor checks from prefer_mwait_c1_over_halt Wyes Karny
2022-05-05 17:04 ` Dave Hansen
2022-05-06 9:42 ` Wyes Karny
2022-05-06 15:52 ` Dave Hansen
2022-05-06 18:19 ` Wyes Karny
2022-05-05 11:04 ` Wyes Karny [this message]
2022-05-05 17:10 ` [PATCH v2 3/3] x86: Fix comment for X86_FEATURE_ZEN Dave Hansen
2022-05-05 18:55 ` Wyes Karny
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