D25221.diff
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	Index: head/sys/x86/include/specialreg.h
	===================================================================
	--- head/sys/x86/include/specialreg.h
	+++ head/sys/x86/include/specialreg.h
	@@ -477,6 +477,7 @@
	#define CPUID_STDEXT3_AVX5124FMAPS 0x00000008
	#define CPUID_STDEXT3_FSRM 0x00000010
	#define CPUID_STDEXT3_AVX512VP2INTERSECT 0x00000100
	+#define CPUID_STDEXT3_MCUOPT 0x00000200
	#define CPUID_STDEXT3_MD_CLEAR 0x00000400
	#define CPUID_STDEXT3_TSXFA 0x00002000
	#define CPUID_STDEXT3_PCONFIG 0x00040000
	@@ -555,6 +556,7 @@
	#define MSR_BBL_CR_BUSY 0x11b
	#define MSR_BBL_CR_CTL3 0x11e
	#define MSR_IA32_TSX_CTRL 0x122
	+#define MSR_IA32_MCU_OPT_CTRL 0x123
	#define MSR_SYSENTER_CS_MSR 0x174
	#define MSR_SYSENTER_ESP_MSR 0x175
	#define MSR_SYSENTER_EIP_MSR 0x176
	@@ -796,6 +798,9 @@

	/* MSR IA32_FLUSH_CMD */
	#define IA32_FLUSH_CMD_L1D 0x00000001
	+
	+/* MSR IA32_MCU_OPT_CTRL */
	+#define IA32_RNGDS_MITG_DIS 0x00000001

	/* MSR IA32_HWP_CAPABILITIES */
	#define IA32_HWP_CAPABILITIES_HIGHEST_PERFORMANCE(x) (((x) >> 0) & 0xff)
	Index: head/sys/x86/x86/identcpu.c
	===================================================================
	--- head/sys/x86/x86/identcpu.c
	+++ head/sys/x86/x86/identcpu.c
	@@ -1028,6 +1028,7 @@
	"\004AVX512_4FMAPS"
	"\005FSRM"
	"\011AVX512VP2INTERSECT"
	+ "\012MCUOPT"
	"\013MD_CLEAR"
	"\016TSXFA"
	"\023PCONFIG"