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Re: [PATCH v3 1/5] x86/microcode: Allow reading microcode revision even if it can't be updated
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 19 Jun 2023 17:58:37 +0200
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Mon, 19 Jun 2023 15:58:44 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.06.2023 17:49, Andrew Cooper wrote:
> On 15/06/2023 4:48 pm, Alejandro Vallejo wrote:
>> diff --git a/xen/arch/x86/cpu/microcode/core.c
>> b/xen/arch/x86/cpu/microcode/core.c
>> index e65af4b82e..df7e1df870 100644
>> --- a/xen/arch/x86/cpu/microcode/core.c
>> +++ b/xen/arch/x86/cpu/microcode/core.c
>> @@ -750,11 +750,12 @@ __initcall(microcode_init);
>> @@ -860,6 +861,9 @@ int __init early_microcode_init(unsigned long
>> *module_map,
>> break;
>> }
>>
>> + if ( ucode_ops.collect_cpu_info )
>> + ucode_ops.collect_cpu_info();
>> +
>
> I still think this wants to be the other side of "ucode loading fully
> unavailable", just below.
>
> I'm confident it will result in easier-to-follow logic.
Yet wouldn't that be against the purpose of obtaining the ucode
revision even if loading isn't possible?
Jan
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