Re: [Qemu-devel] [PATCH bugfix v1 1/3] xen: hvm: Abstract away memory region name ref (fix broken build)

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

On Wed, 20 Aug 2014, Peter Maydell wrote:
> On 20 August 2014 09:53, Stefan Weil <sw@weilnetz.de> wrote:
> > Am 20.08.2014 um 07:07 schrieb Peter Crosthwaite:
> >> The mr->name field is removed. This slipped through compile testing.
> >> Fix.
> >>
> >> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
> >> ---
> >>
> >>  xen-hvm.c | 9 ++++++---
> >>  1 file changed, 6 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/xen-hvm.c b/xen-hvm.c
> >> index 91de2e2..9fd9d6e 100644
> >> --- a/xen-hvm.c
> >> +++ b/xen-hvm.c
> >> @@ -291,6 +291,7 @@ static int xen_add_to_physmap(XenIOState *state,
> >>      hwaddr pfn, start_gpfn;
> >>      hwaddr phys_offset = memory_region_get_ram_addr(mr);
> >>      char path[80], value[17];
> >> +    const char *mr_name;
> >>
> >>      if (get_physmapping(state, start_addr, size)) {
> >>          return 0;
> >> @@ -326,11 +327,13 @@ go_physmap:
> >>          }
> >>      }
> >>
> >> +    mr_name = memory_region_name(mr);
> >> +
> >>      physmap = g_malloc(sizeof (XenPhysmap));
> >>
> >>      physmap->start_addr = start_addr;
> >>      physmap->size = size;
> >> -    physmap->name = (char *)mr->name;
> >> +    physmap->name = (char *)mr_name;
> >
> > This type cast can be removed. Just add the const in XenPhysmap's name
> > declaration.
> 
> Yes, I noticed that dodgy cast too. Stefano, is there
> a reason why the XenPhysmap field isn't just a
> const pointer?
 
No reason, we could just switch to const char*. I would be happy to take
a patch for that.

Sorry for the late reply, I am attending XenSummit/LinuxCon.