Re: [PATCH 1/1] x86/mm: fix incomplete page-table invalidation with TCE

[Lance Yang <lance.yang@linux.dev>]

On 2026/10/5 22:53, Borislav Petkov wrote:
> On Mon, Oct 05, 2026 at 10:36:26PM +0800, Lance Yang wrote:
>> I don't have an AMD machine to test this on. I spotted something
>> that looked wrong in the code and sent it out to see what others
>> think.
> 
> You send a normal mail - not a patch.
>   
>> Maybe I'm reading the manual wrong, but is raising a concern
>> based on the code and the manual really just "a wild hunch"?
> 
> If it is formulated like a patch which is supposed to be even urgent, then
> you're reading our process wrong.
> 
> https://docs.kernel.org/process/development-process.html
> 
> And since you have not tested it to actually fix anything, then this patch is
> nothing but a wild hunch.
> 
> And to answer your question, no, it is not needed. Definitely not the TCE
> angle.
> 
> Now, the speculative thing is another story but that whole story you're
> referring to needs a lot more debugging.
> 
> But we do not apply patches on a wild hunch, without any definitive data that
> they fix an issue and, if very much possible, with a clear explanation why
> they fix it.

OK, let's drop the patch.