[Intel-xe] [PATCH v6 00/11] Try to handle TLB invalidations from CT fast-path

Souza, Jose jose.souza at intel.com
Mon Jul 10 14:41:25 UTC 2023


On Mon, 2023-07-10 at 10:40 +0100, Matthew Auld wrote:
> In various test cases and workloads that put the system under a heavy load, we
> can sometimes see errors with missed TLB invalidations. If we handle the TLB
> completions directly from IRQ we can see a big improvement.
> 
> v4:
>   - Various tweaks. Big thing is to make sure we grab the fast_lock for the g2h
>     reservation when doing the CT send, which closes one big race with the CT
>     fast-path.
> v5:
>   - Various improvements. Fix the race with adding a fence after its seqno has
>     already been signalled. (Matt Brost)
> v6:
>   - One small fix to patch 8 to make sure we write the correct seqno on reset.
> 

Tested-by: José Roberto de Souza <jose.souza at intel.com>


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