linux-kernel - RE: cross-compiling a 64-bit kernel on a 32-bit host

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Date:   Fri, 11 May 2018 04:01:46 +0000
From:   "Li, Philip" <philip.li@...el.com>
To:     "Wu, Fengguang" <fengguang.wu@...el.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        LKP <lkp@...org>, lkp <lkp@...el.com>,
        "Du, Julie" <julie.du@...el.com>
Subject: RE: cross-compiling a 64-bit kernel on a 32-bit host


> Subject: Re: cross-compiling a 64-bit kernel on a 32-bit host
> 
> Hi Josh,
> 
> CC LKP team.
> 
> On Thu, May 10, 2018 at 05:36:19PM -0500, Josh Poimboeuf wrote:
> >Hi Fengguang,
> >
> >I occasionally get compilation bug reports from people who are
> >cross-compiling an x86-64 kernel target on an x86-32 host.
> >
> >Any chance the 0-day build bot could test that configuration?  I think
> >just building a defconfig would be sufficient.  It would help sort out
> >issues in objtool and other host-built scripts.
> 
> To do that we'll need to create a new build chroot. Julie/Philip
> should be able to evaluate the efforts and do the plan.
got it, we will consider this in future plan after some evaluation.

> 
> Thanks,
> Fengguang