Re: [PATCH v6 18/18] x86/kasan: Make software tag-based kasan available

[Maciej Wieczor-Retman]

On 2025-11-11 at 10:00:59 +0100, Alexander Potapenko wrote:
>On Wed, Oct 29, 2025 at 9:11 PM Maciej Wieczor-Retman
><m.wieczorretman@xxxxx> wrote:
>>
>> From: Maciej Wieczor-Retman <maciej.wieczor-retman@xxxxxxxxx>
>>
>
>> -   ffffec0000000000 |  -20    TB | fffffbffffffffff |   16 TB | KASAN shadow memory
>> +   ffffec0000000000 |  -20    TB | fffffbffffffffff |   16 TB | KASAN shadow memory (generic mode)
>> +   fffff40000000000 |   -8    TB | fffffbffffffffff |    8 TB | KASAN shadow memory (software tag-based mode)
>>    __________________|____________|__________________|_________|____________________________________________________________
>
>
>> +   ffdf000000000000 |   -8.25 PB | fffffbffffffffff |   ~8 PB | KASAN shadow memory (generic mode)
>> +   ffeffc0000000000 |   -6    PB | fffffbffffffffff |    4 PB | KASAN shadow memory (software tag-based mode)
>>    __________________|____________|__________________|_________|____________________________________________________________
>
>> +       default 0xeffffc0000000000 if KASAN_SW_TAGS
>>         default 0xdffffc0000000000
>
>Please elaborate in the patch description how these values were picked.

Sure, will do :)