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Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, microcode, AMD: Add microcode revision to /proc/cpuinfo
  x86, microcode: Correct microcode revision format
  coretemp: Get microcode revision from cpu_data
  x86, intel: Use c->microcode for Atom errata check
  x86, intel: Output microcode revision in /proc/cpuinfo
  x86, microcode: Don't request microcode from userspace unnecessarily

Fix up trivial conflicts in arch/x86/kernel/cpu/amd.c (conflict between
moving AMD BSP code to cpu_dev helper function and adding AMD microcode
revision to /proc/cpuinfo code)
This commit is contained in:
Linus Torvalds 2011-10-28 05:14:48 -07:00
commit 8237eb946a
9 changed files with 48 additions and 50 deletions
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28
drivers/hwmon/coretemp.c
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@ -325,15 +325,6 @@ static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
return adjust_tjmax(c, id, dev);
}
static void __devinit get_ucode_rev_on_cpu(void *edx)
{
u32 eax;
wrmsr(MSR_IA32_UCODE_REV, 0, 0);
sync_core();
rdmsr(MSR_IA32_UCODE_REV, eax, *(u32 *)edx);
}
static int create_name_attr(struct platform_data *pdata, struct device *dev)
{
sysfs_attr_init(&pdata->name_attr.attr);
@ -380,27 +371,16 @@ exit_free:
static int __cpuinit chk_ucode_version(unsigned int cpu)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
int err;
u32 edx;
/*
* Check if we have problem with errata AE18 of Core processors:
* Readings might stop update when processor visited too deep sleep,
* fixed for stepping D0 (6EC).
*/
if (c->x86_model == 0xe && c->x86_mask < 0xc) {
/* check for microcode update */
err = smp_call_function_single(cpu, get_ucode_rev_on_cpu,
&edx, 1);
if (err) {
pr_err("Cannot determine microcode revision of "
"CPU#%u (%d)!\n", cpu, err);
return -ENODEV;
} else if (edx < 0x39) {
pr_err("Errata AE18 not fixed, update BIOS or "
"microcode of the CPU!\n");
return -ENODEV;
}
if (c->x86_model == 0xe && c->x86_mask < 0xc && c->microcode < 0x39) {
pr_err("Errata AE18 not fixed, update BIOS or "
"microcode of the CPU!\n");
return -ENODEV;
}
return 0;
}