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Re: [Qemu-devel] Tracing guest memory accesses

From: maestro
Subject: Re: [Qemu-devel] Tracing guest memory accesses
Date: Sun, 17 Dec 2006 12:52:55 +0100

Am Samstag, den 16.12.2006, 23:19 -0800 schrieb Diwaker Gupta:
> On 12/16/06, Daniel Jacobowitz <address@hidden> wrote:
> > On Sat, Dec 16, 2006 at 07:42:46PM -0800, Diwaker Gupta wrote:
> > > o do these changes seem correct? As in, do they actually track the
> > > read/write memory accesses done by the guest? I was concerned because
> > > when I start a guest, I see a whole lot of writes and not as many
> > > reads, which seems a little counter intuitive.
> >
> > No.  Those are I/O device accesses, not memory accesses.  Look at the
> > softmmu code instead.
> Like I said, I did add some debugging code to softmmu_template.h. The
> read/writes I'm seeing are being generated by that softmmu debugging
> code, not the iommu code. Sorry if I wasn't clear. Is there some other
> softmmu code I should be looking at?

as far as i remember i had to put the same code into softmmu_header.h to
get "correct" results.
i found it easiest to do this in the ld/st macros in these files (~6
places in code)

hope this helps

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