linux-kernel - Re: [PATCH 1/2] x86/sgx: Replace section->init_laundry_list with sgx_dirty_page

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Date:   Thu, 18 Mar 2021 11:34:10 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Borislav Petkov <bp@...en8.de>,
        Jarkko Sakkinen <jarkko.sakkinen@...el.com>
Cc:     linux-sgx@...r.kernel.org, Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] x86/sgx: Replace section->init_laundry_list with
 sgx_dirty_page_list

On 3/18/21 10:40 AM, Borislav Petkov wrote:
> So both patches look ok to me but the sgx test case fails on -rc3 with and
> without those patches on my box:
> 
> ./test_sgx 
> 0x0000000000000000 0x0000000000002000 0x03
> 0x0000000000002000 0x0000000000001000 0x05
> 0x0000000000003000 0x0000000000003000 0x03
> mmap() failed, errno=1.

I usually get that after I reboot.  I have to do this:

	chmod 755 /dev/sgx_enclave
	mount -o remount,exec /dev

BTW, that *IS* going to get tripped over all the time.  The selftest
needs a better error message.  I'll send a patch.