Messages in this thread | | | Date | Tue, 27 Oct 2020 11:05:15 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v33 11/21] x86/sgx: Linux Enclave Driver |
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On Mon, Oct 26, 2020 at 02:26:13PM -0700, Dave Hansen wrote: > What were you concerned about here? Was it how long the syscall could > take, or that one user could exhaust all the enclave memory in one call?
More the latter. And generally, to have a sanity-check on all requests coming from luserspace.
> Some later versions of this patch have a 1MB limit per to reduce how > long each SGX_IOC_ENCLAVE_ADD_PAGES call spends in the kernel. But, I'm > not _sure_ that's what you were intending.
Yeah, that was not my main goal - rather to sanity-check user input and impose a sane limit.
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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