linux-kernel - Subject: [PATCH 0/1] SGX self test fails

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Date:   Thu, 29 Apr 2021 12:39:51 -0600
From:   Tim Gardner <tim.gardner@...onical.com>
To:     dave.hansen@...ux.intel.com
Cc:     tim.gardner@...onical.com, jarkko@...nel.org, shuah@...nel.org,
        linux-sgx@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Subject: [PATCH 0/1] SGX self test fails

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.

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