Yeah, rate-limiting makes sense. Maybe we could take it one step further
and only print the warning the first time a particular unemulated DCR is
accessed.
I also agree about the captalization. :)
--
Hollis Blanchard
IBM Linux Technology Center
On Wed, 2008-02-06 at 12:25 +0100, Christian Ehrhardt wrote:
> hi Jerone,
> I think this is good for debugging to find unsupported hardware, but it
> should not be enabled by default (you could get a printf storm if a guest
> workload does stupid things). Maybe qemu has some debug/verbose options you
> can use.
> And additionally it would be useful for the dcr_write patch to print the
> value it tried to write.
> I also don't know if we really need that caps-locked in the output.
>
> Jerone Young wrote:
> > # HG changeset patch
> > # User Jerone Young <[EMAIL PROTECTED]>
> > # Date 1202249136 21600
> > # Node ID 4bbbf98ebf05ef77dbb68e2131b3bc0764767c99
> > # Parent f8cab6a29bf3f34f1cbf4d1e6d7bd21809fd4184
> > Add print for PowerPC qemu for failed DCR read/writes
> >
> > This patch adds a print to notify of failed reads and rights. Currently
> > we will still ignore them (until development is fully done). But this makes
> > them easier to spot.
> >
> > Signed-off-by: Jerone Young <[EMAIL PROTECTED]>
> >
> > diff --git a/qemu/qemu-kvm-powerpc.c b/qemu/qemu-kvm-powerpc.c
> > --- a/qemu/qemu-kvm-powerpc.c
> > +++ b/qemu/qemu-kvm-powerpc.c
> > @@ -178,13 +178,17 @@ int handle_powerpc_dcr_read(int vcpu, ui
> > int handle_powerpc_dcr_read(int vcpu, uint32_t dcrn, uint32_t *data)
> > {
> > CPUState *env = cpu_single_env;
> > - ppc_dcr_read(env->dcr_env, dcrn, data);
> > + if (ppc_dcr_read(env->dcr_env, dcrn, data) < 0)
> > + printf("DCR FAILED on READ at 0x%x\n", dcrn);
> > +
> > return 0; /* XXX ignore failed DCR ops */
> > }
> >
> > int handle_powerpc_dcr_write(int vcpu, uint32_t dcrn, uint32_t data)
> > {
> > CPUState *env = cpu_single_env;
> > - ppc_dcr_write(env->dcr_env, dcrn, data);
> > + if (ppc_dcr_write(env->dcr_env, dcrn, data) < 0)
> > + printf("DCR FAILED on WRITE at 0x%x\n", dcrn);
> just a suggestion
>
> printf("%s - failed writing 0x%x @ 0x%x\n", dcrn, data);
>
> > +
> > return 0; /* XXX ignore failed DCR ops */
> > }
> >
> > -------------------------------------------------------------------------
> > This SF.net email is sponsored by: Microsoft
> > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > _______________________________________________
> > kvm-ppc-devel mailing list
> > [EMAIL PROTECTED]
> > https://lists.sourceforge.net/lists/listinfo/kvm-ppc-devel
>
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
kvm-devel mailing list
kvm-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/kvm-devel
