Re: Kernel Dump

From: David O'Brien (obrien_at_freebsd.org)
Date: 06/23/05

  • Next message: Marcel Moolenaar: "Re: How to get stack from every thread when doing crash dump?" 
    Date: Thu, 23 Jun 2005 06:53:37 -0700
To: Peter Wemm <peter@wemm.org>

    On Wed, Jun 22, 2005 at 11:23:25PM -0700, Peter Wemm wrote:
    > IA64 and Sparc systems usually had sparse memory configurations and the
    > old raw format didn't have any facility to avoid storing holes.
    ..
    > I've just rewritten the AMD64 crashdump support to use ELF like ia64.
    > In fact, I reused most of the ia64 code. We ran into serious problems
    > at work, first on the amd64 platform and now also the i386 platform.
    > The problem is that x86 machines are increasinly having memory holes.
    > The simplistic dump code has no way to skip the memory hole and tries
    > to dump things like the AGP frame buffer, pci card MMIO space,
    > PCI-Express configuration space (this means accessing hardware!!) and
    > so on.

    Hi Peter,

    This is great news! I'm really happy to see this work. Will we be able
    to switch to this for 6.0R? 

    -- 
-- David  (obrien@FreeBSD.org)
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