linux-kernel - Re: 5-level pagetable patches break ppc64le

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Date:   Tue, 14 Mar 2017 07:41:42 +1100
From:   Anton Blanchard <anton@...ba.org>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     kirill.shutemov@...ux.intel.com, mhocko@...e.com,
        torvalds@...ux-foundation.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: 5-level pagetable patches break ppc64le

Hi Kirill,

> > My ppc64le boot tests stopped working as of commit c2febafc6773
> > ("mm: convert generic code to 5-level paging")
> > 
> > We hang part way during boot, just before bringing up the network. I
> > haven't had a chance to narrow it down yet.  
> 
> Please check if patch by this link helps:
> 
> http://lkml.kernel.org/r/20170313052213.11411-1-kirill.shutemov@linux.intel.com

It does fix the ppc64le boot hangs, thanks.

Tested-by: Anton Blanchard <anton@...ba.org>

Anton