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|
--- usr.sbin/cpucontrol/cpucontrol.8.orig
+++ usr.sbin/cpucontrol/cpucontrol.8
@@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd June 30, 2009
+.Dd January 5, 2018
.Dt CPUCONTROL 8
.Os
.Sh NAME
@@ -36,44 +36,48 @@
.Nm
.Op Fl vh
.Fl m Ar msr
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Fl m Ar msr Ns = Ns Ar value
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Fl m Ar msr Ns &= Ns Ar mask
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Fl m Ar msr Ns |= Ns Ar mask
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Fl i Ar level
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Fl i Ar level,level_type
-.Bk
.Ar device
.Ek
+.Bk
.Nm
.Op Fl vh
.Op Fl d Ar datadir
.Fl u
+.Ar device
+.Ek
.Bk
+.Nm
+.Fl e
.Ar device
.Ek
.Sh DESCRIPTION
@@ -129,6 +133,20 @@
.Nm
utility will walk through the configured data directories
and apply all firmware updates available for this CPU.
+.It Fl e
+Re-evaluate the kernel flags indicating the present CPU features.
+This command is typically executed after a firmware update was applied
+which changes information reported by the
+.Dv CPUID
+instruction.
+.Pp
+.Bf -symbolic
+Only execute the
+.Fl e
+command after the microcode update was applied to all CPUs in the system.
+The kernel does not operate correctly if the features of processors are
+not identical.
+.Ef
.It Fl v
Increase the verbosity level.
.It Fl h
--- usr.sbin/cpucontrol/cpucontrol.c.orig
+++ usr.sbin/cpucontrol/cpucontrol.c
@@ -60,6 +60,7 @@
#define FLAG_I 0x01
#define FLAG_M 0x02
#define FLAG_U 0x04
+#define FLAG_E 0x10
#define OP_INVAL 0x00
#define OP_READ 0x01
@@ -114,7 +115,7 @@
if (name == NULL)
name = "cpuctl";
fprintf(stderr, "Usage: %s [-vh] [-d datadir] [-m msr[=value] | "
- "-i level | -i level,level_type | -u] device\n", name);
+ "-i level | -i level,level_type | -e | -u] device\n", name);
exit(EX_USAGE);
}
@@ -338,6 +339,25 @@
}
static int
+do_eval_cpu_features(const char *dev)
+{
+ int fd, error;
+
+ assert(dev != NULL);
+
+ fd = open(dev, O_RDWR);
+ if (fd < 0) {
+ WARN(0, "error opening %s for writing", dev);
+ return (1);
+ }
+ error = ioctl(fd, CPUCTL_EVAL_CPU_FEATURES, NULL);
+ if (error < 0)
+ WARN(0, "ioctl(%s, CPUCTL_EVAL_CPU_FEATURES)", dev);
+ close(fd);
+ return (error);
+}
+
+static int
do_update(const char *dev)
{
int fd;
@@ -431,11 +451,14 @@
* Add all default data dirs to the list first.
*/
datadir_add(DEFAULT_DATADIR);
- while ((c = getopt(argc, argv, "d:hi:m:uv")) != -1) {
+ while ((c = getopt(argc, argv, "d:ehi:m:uv")) != -1) {
switch (c) {
case 'd':
datadir_add(optarg);
break;
+ case 'e':
+ flags |= FLAG_E;
+ break;
case 'i':
flags |= FLAG_I;
cmdarg = optarg;
@@ -464,22 +487,25 @@
/* NOTREACHED */
}
dev = argv[0];
- c = flags & (FLAG_I | FLAG_M | FLAG_U);
+ c = flags & (FLAG_E | FLAG_I | FLAG_M | FLAG_U);
switch (c) {
- case FLAG_I:
- if (strstr(cmdarg, ",") != NULL)
- error = do_cpuid_count(cmdarg, dev);
- else
- error = do_cpuid(cmdarg, dev);
- break;
- case FLAG_M:
- error = do_msr(cmdarg, dev);
- break;
- case FLAG_U:
- error = do_update(dev);
- break;
- default:
- usage(); /* Only one command can be selected. */
+ case FLAG_I:
+ if (strstr(cmdarg, ",") != NULL)
+ error = do_cpuid_count(cmdarg, dev);
+ else
+ error = do_cpuid(cmdarg, dev);
+ break;
+ case FLAG_M:
+ error = do_msr(cmdarg, dev);
+ break;
+ case FLAG_U:
+ error = do_update(dev);
+ break;
+ case FLAG_E:
+ error = do_eval_cpu_features(dev);
+ break;
+ default:
+ usage(); /* Only one command can be selected. */
}
SLIST_FREE(&datadirs, next, free);
return (error == 0 ? 0 : 1);
|
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