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Re: [Xen-devel] Memory Allocation Problem

To: Jeff Clark <jclark@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Memory Allocation Problem
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 01 Apr 2004 10:35:06 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxxx
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> Using the latest cvs tarball I am able to create and start domains, but 
> when I stop and/or destroy the domain the memory is never freed.  After 
> stopping and starting my "test" domain a few times, I get an "Operation 
> not permitted" message.  After running xc_physinfo.py I see that my 
> available memory is exhausted (even though I only have dom0 running with 
> 256mb allocated and there is 512mb in the machine).

Hmmm... yes I see this too. Any idea when it broke? Would it have been
one of yesterday's checkins?

> Also, any pointers for porting the gdth (raid) scsi driver?  I've 
> figured out the obvious (rip out all the proc related stuff), but I'm a 
> bit lost when it comes to the wait stuff.

We've tended to replace wait/completion stuff with spinning on a
flag. There are a few examples dotted around the SCSI code in Xen. If
you can wait a few weeks then the new IO world will be complete enough
for general use -- then you can use Linux drivers directly.

 -- Keir

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