Re: [PATCH] x86/sgx: Fix deadloop in __sgx_alloc_epc_page()

Dave Hansen
2024-08-30T14:03:48Z

On 8/29/24 23:02, Aaron Lu wrote:
>> Also, I do think we should probably add some kind of sanity warning to
>> the SGX code in another patch. If a node on an SGX system has CPUs and
>> memory, it's very likely it will also have some EPC. It can be
>> something soft like a pr_info(), but I think it would be nice to have.
> I think there are systems with valid reason to not setup an EPC section
> per node, e.g. a 8 sockets system with SNC=2, there would be a total of
> 16 nodes and it's not possible to have one EPC section per node because
> the upper limit of EPC sections is 8. I'm not sure a warning is
> appropriate here, what do you think?

While possible, those systems are pretty rare. I don't think a
softly-worded pr_info() will scare anyone too much.