Messages in this thread | | | Date | Mon, 3 May 2021 18:38:07 +0300 | From | Jarkko Sakkinen <> | Subject | Re: Subject: [PATCH 0/1] SGX self test fails |
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On Thu, Apr 29, 2021 at 12:39:51PM -0600, Tim Gardner wrote: > I'm just starting my learning curve on SGX, so I don't know if I've missed > some setup for the SGX device entries. After looking at arch/x86/kernel/cpu/sgx/driver.c > I see that there is no mode value for either sgx_dev_enclave or sgx_dev_provision.
Take a look at
https://github.com/systemd/systemd/pull/18944
> With this patch I can get the SGX self test to complete: > > sudo ./test_sgx > Warning: no execute permissions on device file /dev/sgx_enclave > 0x0000000000000000 0x0000000000002000 0x03 > 0x0000000000002000 0x0000000000001000 0x05 > 0x0000000000003000 0x0000000000003000 0x03 > SUCCESS > > Is the warning even necessary ? > > Tim
With a quick look, I think that check is too strict. AFAIK, mmap(PROT_EXEC) can be done, as long as the file is not in a noexec FS.
Dave?
For reference:
https://lore.kernel.org/linux-sgx/20210318194301.11D9A984@viggo.jf.intel.com/
/Jarkko
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