linux-kernel - Re: [PATCH v3 1/2] powerpc: Emulation support for load/store instructions on LE

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Message-ID: <87d1elm5uu.fsf@concordia.ellerman.id.au>
Date:   Tue, 14 Feb 2017 21:20:09 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     benh@...nel.crashing.org, paulus@...ba.org,
        lsorense@...lub.uwaterloo.ca, oohall@...il.com,
        naveen.n.rao@...ux.vnet.ibm.com, ast@...nel.org,
        chris@...troguy.com, aneesh.kumar@...ux.vnet.ibm.com,
        bsingharora@...il.com, anton@...ba.org,
        paul.gortmaker@...driver.com, bauerman@...ux.vnet.ibm.com,
        viro@...iv.linux.org.uk, christophe.leroy@....fr, duwe@....de,
        oss@...error.net, Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH v3 1/2] powerpc: Emulation support for load/store instructions on LE

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

> emulate_step() uses a number of underlying kernel functions that were
> initially not enabled for LE. This has been rectified since.

When exactly? ie. which commit.

Should we backport this? ie. is it actually a bug people are hitting in
the real world much?

cheers