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

Pull x86 fixes from Ingo Molnar:
 "Two pending (non-PTI) x86 fixes:

   - an Intel-MID crash fix

   - and an Intel microcode loader blacklist quirk to avoid a
     problematic revision"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/intel-mid: Revert "Make 'bt_sfi_data' const"
  x86/microcode/intel: Extend BDW late-loading with a revision check
This commit is contained in:
Linus Torvalds 2018-01-12 10:32:11 -08:00
parent 67549d46d4 9d0513d82f
commit c92a9a461d
2 changed files with 12 additions and 3 deletions
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13
arch/x86/kernel/cpu/microcode/intel.c
View File

@ -910,8 +910,17 @@ static bool is_blacklisted(unsigned int cpu)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
if (c->x86 == 6 && c->x86_model == INTEL_FAM6_BROADWELL_X) {
pr_err_once("late loading on model 79 is disabled.\n");
/*
* Late loading on model 79 with microcode revision less than 0x0b000021
* may result in a system hang. This behavior is documented in item
* BDF90, #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family).
*/
if (c->x86 == 6 &&
c->x86_model == INTEL_FAM6_BROADWELL_X &&
c->x86_mask == 0x01 &&
c->microcode < 0x0b000021) {
pr_err_once("Erratum BDF90: late loading with revision < 0x0b000021 (0x%x) disabled.\n", c->microcode);
pr_err_once("Please consider either early loading through initrd/built-in or a potential BIOS update.\n");
return true;
}

2
arch/x86/platform/intel-mid/device_libs/platform_bt.c
View File

@ -60,7 +60,7 @@ static int __init tng_bt_sfi_setup(struct bt_sfi_data *ddata)
return 0;
}
static const struct bt_sfi_data tng_bt_sfi_data __initdata = {
static struct bt_sfi_data tng_bt_sfi_data __initdata = {
.setup = tng_bt_sfi_setup,
};