Re: [Qemu-devel] [PATCH v2 2/2] intel-iommu: start to use error_report_once

[Peter Xu <peterx@redhat.com>]

On Tue, May 22, 2018 at 06:09:46PM -0300, Philippe Mathieu-Daudé wrote:
> Hi Peter,
> 
> On 05/22/2018 12:56 AM, Peter Xu wrote:
> > Replace existing trace_vtd_err() with error_report_once() then stderr
> > will capture something if any of the error happens, meanwhile we don't
> > suffer from any DDOS.  Then remove the trace point.
> > 
> > Signed-off-by: Peter Xu <peterx@redhat.com>
> > ---
> >  hw/i386/intel_iommu.c | 34 +++++++++++++++++-----------------
> >  hw/i386/trace-events  |  1 -
> >  2 files changed, 17 insertions(+), 18 deletions(-)
> > 
> > diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> > index fb31de9416..cf655fb9f6 100644
> > --- a/hw/i386/intel_iommu.c
> > +++ b/hw/i386/intel_iommu.c
> > @@ -285,14 +285,14 @@ static void vtd_generate_fault_event(IntelIOMMUState *s, uint32_t pre_fsts)
> >  {
> >      if (pre_fsts & VTD_FSTS_PPF || pre_fsts & VTD_FSTS_PFO ||
> >          pre_fsts & VTD_FSTS_IQE) {
> > -        trace_vtd_err("There are previous interrupt conditions "
> > +        error_report_once("There are previous interrupt conditions "
> >                        "to be serviced by software, fault event "
> >                        "is not generated.");
> 
> Can you keep alignment consistent please?

That was actually intended so reviewers don't need to skim those lines
only caused by indents.  If I'm going to touch those lines, then maybe
I can make them even look better by dumping more valid information.

I'll repost.  Thanks,

-- 
Peter Xu