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Date: Thu, 24 Oct 2024 02:41:47 GMT
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To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org,
dev-commits-src-main@FreeBSD.org
From: Konstantin Belousov <kib@FreeBSD.org>
Subject: git: 9f718b57b846 - main - x86 specialreg: add bit masks
definitions for LASS and LAM features
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The branch main has been updated by kib:
URL: https://cgit.FreeBSD.org/src/commit/?id=9f718b57b846b8e1fa562584747fdae42ffed8f4
commit 9f718b57b846b8e1fa562584747fdae42ffed8f4
Author: Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2024-10-23 23:40:01 +0000
Commit: Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2024-10-24 02:41:11 +0000
x86 specialreg: add bit masks definitions for LASS and LAM features
in CPUID Structured Extended Features %eax 0x7 leaf 1 %eax, from
Intel SDM vol. 2 rev. 085.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
---
sys/x86/include/specialreg.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sys/x86/include/specialreg.h b/sys/x86/include/specialreg.h
index ab172ec54ff6..51c513b6a5ab 100644
--- a/sys/x86/include/specialreg.h
+++ b/sys/x86/include/specialreg.h
@@ -534,6 +534,12 @@
#define CPUID_STDEXT3_CORE_CAP 0x40000000
#define CPUID_STDEXT3_SSBD 0x80000000
+/*
+ * CPUID instruction 7 Structured Extended Features, leaf 1 eax info
+ */
+#define CPUID_STDEXT4_LASS 0x00000040
+#define CPUID_STDEXT4_LAM 0x04000000
+
/* CPUID_HYBRID_ID leaf 0x1a */
#define CPUID_HYBRID_CORE_MASK 0xff000000
#define CPUID_HYBRID_SMALL_CORE 0x20000000