Re: [Xen-devel] [PATCH v3 05/11] optee: add fast calls handling

[Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>]

Hello Julien,

Julien Grall writes:

[...]
>> Because mediator can't share one static SHM region with all guests,
>> it just disables it for all.
>
> I haven't seen an answer to my question on the previous version. For reminder:
I'm sorry, I missed this somehow.


> Would it make sense to still allow the hardware domain to access static SHM?
Not really. If linux drivers sees that OP-TEE support dynamic SHM, it
uses it by default. And all new versions of OP-TEE support dynamic SHM.

So, it will add unnecessary code to enable feature which will not be used.

But, actually, there is a caveat. Right now linux driver requires static SHM,
even if it will not use it. I have submitted patch that fixes it, but
it still not merged.

So... what do you think? Should I add piece of code which is needed
right now, but will not be used later?

--
Best regards, Volodymyr Babchuk
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel