On 17.09.2019 11:01, Chao Gao wrote:
> On Fri, Sep 13, 2019 at 11:22:59AM +0200, Jan Beulich wrote:
>> On 12.09.2019 09:22, Chao Gao wrote:
>>> --- a/xen/include/asm-x86/microcode.h
>>> +++ b/xen/include/asm-x86/microcode.h
>>> @@ -30,6 +30,7 @@ struct microcode_ops {
>>> bool (*match_cpu)(con
On Fri, Sep 13, 2019 at 11:22:59AM +0200, Jan Beulich wrote:
>On 12.09.2019 09:22, Chao Gao wrote:
>> @@ -283,6 +284,27 @@ static enum microcode_match_result compare_patch(
>> : OLD_UCODE;
>> }
>>
>> +static bool is_blacklisted(void)
On 12/09/2019 08:22, Chao Gao wrote:
> It ports the implementation of is_blacklisted() in linux kernel
> to Xen.
>
> Late loading may cause system hang if CPUs are affected by BDF90.
> Check against BDF90 before performing a late loading.
>
> Signed-off-by: Chao Gao
There is an Intel-blessed work
On 12.09.2019 09:22, Chao Gao wrote:
> @@ -283,6 +284,27 @@ static enum microcode_match_result compare_patch(
> : OLD_UCODE;
> }
>
> +static bool is_blacklisted(void)
> +{
> +struct cpuinfo_x86 *c = ¤t_cpu_data;
> +uint64_t ll
It ports the implementation of is_blacklisted() in linux kernel
to Xen.
Late loading may cause system hang if CPUs are affected by BDF90.
Check against BDF90 before performing a late loading.
Signed-off-by: Chao Gao
---
xen/arch/x86/microcode.c| 6 ++
xen/arch/x86/microcode_intel.c
