From: victora <victora@linux.vnet.ibm.com>
To: alistair@popple.id.au, jk@ozlabs.org
Cc: mauricfo@linux.vnet.ibm.com, victora@br.ibm.com, linuxppc-dev@ozlabs.org
Subject: 1M hugepage size being registered on Linux
Date: Tue, 20 Jun 2017 10:47:47 -0300 [thread overview]
Message-ID: <322aa4a1a11ca79008a8c894c12a80d5@linux.vnet.ibm.com> (raw)
Hi Alistair/Jeremy,
I am working on a bug related to 1M hugepage size being registered on
Linux (Power 8 Baremetal - Garrison).
I was checking dmesg and it seems that 1M page size is coming from
firmware to Linux.
[ 0.000000] base_shift=20: shift=20, sllp=0x0130, avpnm=0x00000000,
tlbiel=0, penc=2
[ 1.528867] HugeTLB registered 1 MB page size, pre-allocated 0 pages
Should Linux support this page size? As afar as I know, this was an
unsupported page size in the past isn't it? If this should be supported
now, is there any specific reason for that?
Thanks,
Victor Aoqui
Software Engineer: Linux Kernel Backports
Linux Technology Center
IBM Systems
next reply other threads:[~2017-06-20 13:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-20 13:47 victora [this message]
2017-06-21 10:33 ` 1M hugepage size being registered on Linux Michael Ellerman
2017-06-21 15:32 ` Mauricio Faria de Oliveira
2017-06-22 8:54 ` Balbir Singh
2017-06-22 8:21 ` Benjamin Herrenschmidt
2017-06-22 3:59 ` Michael Ellerman
2017-06-22 8:09 ` Benjamin Herrenschmidt
2017-06-22 11:17 ` Michael Ellerman
2017-06-23 19:00 ` victora
2017-06-26 3:14 ` Michael Ellerman
2017-06-22 11:03 ` Michal Suchánek
2017-06-23 5:26 ` Michael Ellerman
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