rtl8211F_led_control

hc

2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc

 kernel/arch/x86/kernel/cpu/tsx.c
..
..
@@ -14,6 +14,9 @@
14
14
 
15
15
 #include "cpu.h"
16
16
 
17
+#undef pr_fmt
18
+#define pr_fmt(fmt) "tsx: " fmt
19
+
17
20
 enum tsx_ctrl_states tsx_ctrl_state __ro_after_init = TSX_CTRL_NOT_SUPPORTED;
18
21
 
19
22
 void tsx_disable(void)
..
..
@@ -55,24 +58,6 @@
55
58
 	wrmsrl(MSR_IA32_TSX_CTRL, tsx);
56
59
 }
57
60
 
58
-static bool __init tsx_ctrl_is_supported(void)
59
-{
60
-	u64 ia32_cap = x86_read_arch_cap_msr();
61
-
62
-	/*
63
-	 * TSX is controlled via MSR_IA32_TSX_CTRL.  However, support for this
64
-	 * MSR is enumerated by ARCH_CAP_TSX_MSR bit in MSR_IA32_ARCH_CAPABILITIES.
65
-	 *
66
-	 * TSX control (aka MSR_IA32_TSX_CTRL) is only available after a
67
-	 * microcode update on CPUs that have their MSR_IA32_ARCH_CAPABILITIES
68
-	 * bit MDS_NO=1. CPUs with MDS_NO=0 are not planned to get
69
-	 * MSR_IA32_TSX_CTRL support even after a microcode update. Thus,
70
-	 * tsx= cmdline requests will do nothing on CPUs without
71
-	 * MSR_IA32_TSX_CTRL support.
72
-	 */
73
-	return !!(ia32_cap & ARCH_CAP_TSX_CTRL_MSR);
74
-}
75
-
76
61
 static enum tsx_ctrl_states x86_get_tsx_auto_mode(void)
77
62
 {
78
63
 	if (boot_cpu_has_bug(X86_BUG_TAA))
..
..
@@ -86,8 +71,21 @@
86
71
 	char arg[5] = {};
87
72
 	int ret;
88
73
 
89
-	if (!tsx_ctrl_is_supported())
74
+	/*
75
+	 * TSX is controlled via MSR_IA32_TSX_CTRL.  However, support for this
76
+	 * MSR is enumerated by ARCH_CAP_TSX_MSR bit in MSR_IA32_ARCH_CAPABILITIES.
77
+	 *
78
+	 * TSX control (aka MSR_IA32_TSX_CTRL) is only available after a
79
+	 * microcode update on CPUs that have their MSR_IA32_ARCH_CAPABILITIES
80
+	 * bit MDS_NO=1. CPUs with MDS_NO=0 are not planned to get
81
+	 * MSR_IA32_TSX_CTRL support even after a microcode update. Thus,
82
+	 * tsx= cmdline requests will do nothing on CPUs without
83
+	 * MSR_IA32_TSX_CTRL support.
84
+	 */
85
+	if (!(x86_read_arch_cap_msr() & ARCH_CAP_TSX_CTRL_MSR))
90
86
 		return;
87
+
88
+	setup_force_cpu_cap(X86_FEATURE_MSR_TSX_CTRL);
91
89
 
92
90
 	ret = cmdline_find_option(boot_command_line, "tsx", arg, sizeof(arg));
93
91
 	if (ret >= 0) {
..
..
@@ -99,7 +97,7 @@
99
97
 			tsx_ctrl_state = x86_get_tsx_auto_mode();
100
98
 		} else {
101
99
 			tsx_ctrl_state = TSX_CTRL_DISABLE;
102
-			pr_err("tsx: invalid option, defaulting to off\n");
100
+			pr_err("invalid option, defaulting to off\n");
103
101
 		}
104
102
 	} else {
105
103
 		/* tsx= not provided */