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xen-devel
Re: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfa
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To: |
"Luck, Tony" <tony.luck@xxxxxxxxx> |
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Subject: |
Re: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths" |
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From: |
Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
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Date: |
Wed, 23 Nov 2005 15:37:07 +0000 |
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Cc: |
"Tian, Kevin" <kevin.tian@xxxxxxxxx>, Xen Mailing List <xen-devel@xxxxxxxxxxxxxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Tony Breeds <tony@xxxxxxxxxxxxxxxxxx>, djm@xxxxxxxxxxxxxxx, David Mosberger-Tang <David.Mosberger@xxxxxxx> |
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Wed, 23 Nov 2005 15:31:59 +0000 |
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On 23 Nov 2005, at 15:07, Luck, Tony wrote:
It's not hard to support arbitrary alignment, at the cost of burning
some space. We should probably do that.
The "we" in that last sentence is the Xen team ... referring
to making fixes to xmalloc?
Correct. But I've thought more on it and I guess that actually the
number of cases where we have structures with alignment requirements
stricter than SMP_CACHE_BYTES will be very small. In fact I can't think
of any in Xen right now. :-)
So it makes most sense for ia64 Xen to define SMP_CACHE_BYTES to a
sensible largeish number irrespective of CONFIG_SMP (after all, how
many uniproc ia64 systems are there), and solve the general alignment
problem in xmalloc only if we really need to.
-- Keir
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- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Tian, Kevin
- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Tian, Kevin
- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Tian, Kevin
- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Magenheimer, Dan (HP Labs Fort Collins)
- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Luck, Tony
- Re: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths",
Keir Fraser <=
- RE: [Xen-devel] __ia64__ ifdef in xmalloc.c: "Fix ar.unat handling forfast paths", Luck, Tony
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