[Fwd: Re: Virtual memory leaking through IA32 emulation layer for

[Fwd: Re: Virtual memory leaking through IA32 emulation layer for

[Arun Sharma]

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[ I mistyped the email address for linux-ia64 ]

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From: David Mosberger <davidm@napali.hpl.hp.com>
To: Arun Sharma <arun.sharma@intel.com>
Cc: davidm@hpl.hp.com, linux-ia64@vger.intel.com
Subject: Re: Virtual memory leaking through IA32 emulation layer for mmap and munmap
Date: Wed, 10 Mar 2004 11:44:52 -0800
Message-ID: <16463.28724.277502.132751@napali.hpl.hp.com>

>>>>> On Wed, 10 Mar 2004 11:31:50 -0800, Arun Sharma <arun.sharma@intel.com> said:

  Arun> Yes, I'd really like to see this problem fixed. I think, the
  Arun> patch needs to be as memory efficient as possible - we're
  Arun> using non-pageable kernel memory. So some numbers on the two
  Arun> level bitmap scheme vs keeping lists of head/tail pages for
  Arun> common ia32 workloads would be good.

Agreed.  The good news is that the track is only needed for parially
allocated pages, so the overhead should, in the worst-case, be
proportional to the number of vmareas, not to the amount of memory
mapped.

	--david