diff options
| author | Takashi Iwai <[email protected]> | 2018-01-19 13:57:33 +0100 |
|---|---|---|
| committer | Takashi Iwai <[email protected]> | 2018-01-19 13:57:33 +0100 |
| commit | c86d95cb6b7ecda7b7d56e40c24b7d8b9bf9159a (patch) | |
| tree | 3d868496a15be09dfb3a471e7b9dce24c0216d89 /arch/x86/kernel/cpu/microcode/intel.c | |
| parent | 388fdb8f882af67ff8394d9420c1e0e42ba35619 (diff) | |
| parent | 8f05b9c65d817dd288da5f1c6ecc134b66f8a190 (diff) | |
Merge tag 'asoc-v4.16-3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v4.16
Some final updates for the merge window, this brings in some
improvements to the ACPI GPIO handling for Intel and a bunch of fixes.
Diffstat (limited to 'arch/x86/kernel/cpu/microcode/intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/intel.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c index 8ccdca6d3f9e..d9e460fc7a3b 100644 --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -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; } |