Re: [Xen-devel] [PATCH for-4.5] xl: correct test condition on libxl_domain_info

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Nov 12, 2014 at 11:10:52AM +0000, Ian Campbell wrote:
> CCing the folks who signed-of-by is on the original patch
> 
> On Wed, 2014-11-12 at 11:05 +0000, Wei Liu wrote:
> > The `if' statement considered return value 0 from libxl_domain_info an
> > error, while 0 actually means success.
> > 
> > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> 
> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> 
> > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> > ---
> > This is a bug fix for PSR feature. This feature was added recently and it's
> > not an regression. However, it would be good to have it working correctly
> > since the beginning, and the fix is straightforward, which should be of
> > very low risk.
> 
> Ack.

I concur and I think it should go in Xen 4.5, but I would like their
input first.

> 
> > ---
> >  tools/libxl/xl_cmdimpl.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
> > index 3c9f146..9afef3f 100644
> > --- a/tools/libxl/xl_cmdimpl.c
> > +++ b/tools/libxl/xl_cmdimpl.c
> > @@ -7908,7 +7908,7 @@ static int psr_cmt_show_cache_occupancy(uint32_t 
> > domid)
> >      /* Each domain */
> >      if (domid != INVALID_DOMID) {
> >          libxl_dominfo dominfo;
> > -        if (!libxl_domain_info(ctx, &dominfo, domid)) {
> > +        if (libxl_domain_info(ctx, &dominfo, domid)) {
> >              fprintf(stderr, "Failed to get domain info for %d\n", domid);
> >              return -1;
> >          }
> 
> 
> 
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