Re: [PATCH v6 4/4] x86/ucode: Utilize ucode_force and remove opt_ucode_allow_same

[Jan Beulich <jbeulich@suse.com>]

On 19.08.2024 10:57, Fouad Hilly wrote:
> On Mon, Jul 29, 2024 at 12:30 PM Jan Beulich <jbeulich@suse.com> wrote:
>> On 25.07.2024 10:27, Fouad Hilly wrote:
>>> --- a/xen/arch/x86/cpu/microcode/core.c
>>> +++ b/xen/arch/x86/cpu/microcode/core.c
>>> @@ -90,6 +90,11 @@ struct ucode_mod_blob {
>>>      size_t size;
>>>  };
>>>
>>> +struct patch_with_flags {
>>> +    unsigned int flags;
>>> +    struct microcode_patch *patch;
>>
>> Pointer-to-const? If the const was omitted here just because of
>> microcode_free_patch(), then I think the issue should be taken care
>> of there.
> 
> This struct is required as is, I initially added a similar struct with
> const (which was removed in v6).
> updated control_thread_fn()
> -static int control_thread_fn(const struct microcode_patch *patch)
> +static int control_thread_fn(struct microcode_patch *patch,
> +                             unsigned int flags)

And why's that change necessary, other than to cater for the omitted const
in the struct?

Jan