Re: [PATCH v29 00/20] Intel SGX foundations

[Jarkko Sakkinen]

On Wed, Apr 22, 2020 at 09:48:58AM -0700, Connor Kuehl wrote:
> On 4/21/20 2:52 PM, Jarkko Sakkinen wrote:
> > v29:
> > * The selftest has been moved to selftests/sgx. Because SGX is an execution
> >    environment of its own, it really isn't a great fit with more "standard"
> >    x86 tests.
> > 
> >    The RSA key is now generated on fly and the whole signing process has
> >    been made as part of the enclave loader instead of signing the enclave
> >    during the compilation time.
> > 
> >    Finally, the enclave loader loads now the test enclave directly from its
> >    ELF file, which means that ELF file does not need to be coverted as raw
> >    binary during the build process.
> > * Version the mm_list instead of using on synchronize_mm() when adding new
> >    entries. We hold the write lock for the mm_struct, and dup_mm() can thus
> >    deadlock with the page reclaimer, which could hold the lock for the old
> >    mm_struct.
> > * Disallow mmap(PROT_NONE) from /dev/sgx. Any mapping (e.g. anonymous) can
> >    be used to reserve the address range. Now /dev/sgx supports only opaque
> >    mappings to the (initialized) enclave data.
> > * Make the vDSO callable directly from C by preserving RBX and taking leaf
> >    from RCX.
> 
> Hi all,
> 
> I've been producing Fedora 32 kernel builds with the SGX patches applied for
> a few of weeks and I've just produced a build with this latest revision[1].
> We've been using these kernels to enable SGX for some of our
> development/test machines.

Thanks a lot!

/Jarkko