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Re: [Qemu-ppc] [PATCH] target-ppc: fix hugepage support when using memor
Re: [Qemu-ppc] [PATCH] target-ppc: fix hugepage support when using memory-backend-file
Mon, 6 Jul 2015 21:09:31 +1000
On Mon, Jul 06, 2015 at 10:53:47AM +0200, Alexander Graf wrote:
> On 07/03/15 09:18, David Gibson wrote:
> >On Thu, Jul 02, 2015 at 03:46:14PM -0500, Michael Roth wrote:
> >>Current PPC code relies on -mem-path being used in order for
> >>hugepage support to be detected. With the introduction of
> >>MemoryBackendFile we can now handle this via:
> >> -object memory-file-backend,mem-path=...,id=hugemem0 \
> >> -numa node,id=mem0,memdev=hugemem0
> >>Management tools like libvirt treat the 2 approaches as
> >>interchangeable in some cases, which can lead to user-visible
> >>regressions even for previously supported guest configurations.
> >>Fix these by also iterating through any configured memory
> >>backends that may be backed by hugepages.
> >>Since the old code assumed hugepages always backed the entirety
> >>of guest memory, play it safe an pick the minimum across the
> >>max pages sizes for all backends, even ones that aren't backed
> >>by hugepages.
> >>Cc: address@hidden
> >>Signed-off-by: Michael Roth <address@hidden>
> >Reviewed-by: David Gibson <address@hidden>
> Thanks, applied to ppc-next.
Hrm.. I see that you've pushed out ppc-next with this patch, but looks
like it hasn't been rebased on latest master.
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
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