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Re: [PATCH 05/10] x86/ucode: Fold microcode_grab_module() into its single caller
- To: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 5 Nov 2024 23:07:30 +0000
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- Cc: Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 05 Nov 2024 23:08:02 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 02/11/2024 4:33 pm, Daniel P. Smith wrote:
> On 10/28/24 05:18, Andrew Cooper wrote:
>> @@ -831,7 +818,15 @@ static int __init early_microcode_load(struct
>> boot_info *bi)
>> size_t size;
>> struct microcode_patch *patch;
>> - microcode_grab_module(bi);
>> + if ( ucode_mod_idx < 0 )
>> + ucode_mod_idx += bi->nr_modules;
>> + if ( ucode_mod_idx <= 0 || ucode_mod_idx >= bi->nr_modules ||
>> + !__test_and_clear_bit(ucode_mod_idx, bi->module_map) )
>> + goto scan;
>> + ucode_mod = *bi->mods[ucode_mod_idx].mod;
>> + scan:
>> + if ( ucode_scan )
>> + microcode_scan_module(bi);
>> if ( !ucode_mod.mod_end && !ucode_blob.size )
>> return 0;
>
> Just a suggestion, but would it be useful to add a comment to explain
> the three conditions of ucode_mod_idx that are being handled before
> scanning is attempted?
The already did that, but it's in the next patch, which also rearranges
this block massively.
~Andrew
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