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Re: x86 release builds are slow
On May 3, 2008, at 20:30 , Manuel Bouyer wrote:
On Sat, May 03, 2008 at 07:13:26PM +0100, Andrew Doran wrote:
DOMU kernels don't need any physical device drivers (and because
DOMU kernels build much faster than dom0 kernels). There's an issue
with XPMAP_OFFSET being different in some cases.
It should be possible to have a kernel that can work both dom0
for Xen >= 3.1
I will try a few experiments but it will be a while before I have
I'm also interested in the possibility of using multiboot to pass
disk image or module to the DOMU kernels for installs.
I'm not sure how Xen actually deal with that for domUs. I don't
multiboot (but it may be close to multiboot).
but that would make a heavily-bloated domU kernel.
I'd prefer to keep separate domU kernels, with only the needed
domU operations (A Xen3 dom0 kernel is 9.5MiB, a domU kernel is less
I think that's simply fallacious. Yes, our kernels are too fat and
working on that, but you would be hard pushed today to buy a new
PC off the
shelf with less than 512MB of RAM. We're speaking of
embedded systems or constrained systems that can just about
support one OS.
please stop assuming we can always throw more hardware to fix
It's just not true.
I haven't used Xen intensively, but one would expect to have multiple
(= many) domU's in a single machine, right? Then, the overhead for
each kernel can be noticeable, can't it?
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