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Date:   Thu, 31 Jan 2019 18:13:15 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Mike Rapoport <rppt@linux.ibm.com>
Cc:     Christophe Leroy <christophe.leroy@c-s.fr>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        PowerPC <linuxppc-dev@lists.ozlabs.org>
Subject: Re: linux-next: powerpc le qemu boot failure after merge of the
 akpm tree
Message-ID: <20190131181315.7075054c@canb.auug.org.au>
In-Reply-To: <20190131063930.GA28876@rapoport-lnx>
References: <20190131163854.307e17ab@canb.auug.org.au>
        <20190131170629.2cc20600@canb.auug.org.au>
        <962e7dd7-779b-2c32-59db-9ced6751dede@c-s.fr>
        <20190131063930.GA28876@rapoport-lnx>
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Hi Mike,

On Thu, 31 Jan 2019 08:39:30 +0200 Mike Rapoport <rppt@linux.ibm.com> wrote:
>
> On Thu, Jan 31, 2019 at 07:15:26AM +0100, Christophe Leroy wrote:
> >=20
> > Le 31/01/2019 =C3=A0 07:06, Stephen Rothwell a =C3=A9crit=C2=A0: =20
> > >>My qemu boot of the powerpc pseries_le_defconfig config failed like t=
his:
> > >>
> > >>htab_hash_mask    =3D 0x1ffff
> > >>-----------------------------------------------------
> > >>numa:   NODE_DATA [mem 0x7ffe7000-0x7ffebfff]
> > >>Kernel panic - not syncing: sparse_buffer_init: Failed to allocate 21=
47483648 bytes align=3D0x10000 nid=3D0 from=3Dfffffffffffffff =20
>=20
> This means that sparse_buffer_init tries to allocate 2G for the sparsemap=
_buf...
>=20
> Stephen, how many memory do you give to your VM?

Exactly 2G.

     qemu-system-ppc64 -M pseries -m 2G ....

The boot normally continue like this:

    rfi-flush: fallback displacement flush available
    count-cache-flush: software flush disabled.
    stf-barrier: hwsync barrier available
    PCI host bridge /pci@800000020000000  ranges:
      IO 0x0000200000000000..0x000020000000ffff -> 0x0000000000000000
     MEM 0x0000200080000000..0x00002000ffffffff -> 0x0000000080000000
     MEM 0x0000210000000000..0x000021ffffffffff -> 0x0000210000000000
    PPC64 nvram contains 65536 bytes
    barrier-nospec: using ORI speculation barrier
    Zone ranges:
      Normal   [mem 0x0000000000000000-0x000000007fffffff]
    Movable zone start for each node
    Early memory node ranges
      node   0: [mem 0x0000000000000000-0x000000007fffffff]
    Initmem setup node 0 [mem 0x0000000000000000-0x000000007fffffff]

--=20
Cheers,
Stephen Rothwell

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