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

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Message-ID: <YFOp0dl0ybo6vODz@kernel.org>
Date:   Thu, 18 Mar 2021 21:28:17 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Dave Hansen <dave.hansen@...el.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...el.com>,
        linux-sgx@...r.kernel.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 Thu, Mar 18, 2021 at 08:01:38PM +0100, Borislav Petkov wrote:
> On Thu, Mar 18, 2021 at 11:34:10AM -0700, Dave Hansen wrote:
> > I usually get that after I reboot.  I have to do this:
> > 
> > 	chmod 755 /dev/sgx_enclave
> > 	mount -o remount,exec /dev
> 
> Yap, that did it:
> 
> 0x0000000000000000 0x0000000000002000 0x03
> 0x0000000000002000 0x0000000000001000 0x05
> 0x0000000000003000 0x0000000000003000 0x03
> SUCCESS
> 
> > BTW, that *IS* going to get tripped over all the time.
> 
> Yap, and I saw it last time and we talked about it and I forgot again.
> Conveniently.
> 
> > The selftest needs a better error message.  I'll send a patch.
> 
> Please do.

Yeah, would make sense. Not longer than two or three weeks ago
I wondered what is wrong with my system, up until I realized that
I forgot to remount :-)

Thanks for taking the patches.

> Thx.

 /Jarkko