linux-kernel - Re: [PATCH 1/3] powerpc: Emulation support for load/store instructions on LE

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Message-ID: <8737j8opwb.fsf@concordia.ellerman.id.au>
Date:   Thu, 03 Nov 2016 20:48:20 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>,
        Anton Blanchard <anton@...ba.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        duwe@....de, ast@...nel.org, viro@...iv.linux.org.uk,
        chris@...troguy.com, oss@...error.net,
        paul.gortmaker@...driver.com, oohall@...il.com,
        aneesh.kumar@...ux.vnet.ibm.com, lsorense@...lub.uwaterloo.ca,
        bauerman@...ux.vnet.ibm.com, paulus@...ba.org,
        naveen.n.rao@...ux.vnet.ibm.com,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH 1/3] powerpc: Emulation support for load/store instructions on LE

Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com> writes:

> On Thursday 03 November 2016 02:34 AM, Anton Blanchard wrote:
>> Hi Ravi,
>>
>>> emulate_step() uses a number of underlying kernel functions that were
>>> initially not enabled for LE. This has been rectified since. So, fix
>>> emulate_step() for LE for the corresponding instructions.
>> Thanks. Should this be queued up for stable?
>
> Thanks Anton. Yes, this should go in stable.

It's fairly big for stable. Does it fix an actual bug? If so what, and
how bad is it, what's the user impact.

Can you also pinpoint which commit it "fixes"?

cheers