Re: [PATCH 1/3] hw/cxl: Get rid of unused cfmw_list

[Zhao Liu]

On Fri, Jul 05, 2024 at 01:04:51AM +0000, Zhijian Li (Fujitsu) wrote:
> Date: Fri, 5 Jul 2024 01:04:51 +0000
> From: "Zhijian Li (Fujitsu)" <lizhijian@fujitsu.com>
> Subject: Re: [PATCH 1/3] hw/cxl: Get rid of unused cfmw_list
> 
> Jonathan,
> 
> 
> There is a new user for cfmw_list now
> 20240704093404.1848132-1-zhao1.liu@linux.intel.com/">https://lore.kernel.org/qemu-devel/20240704093404.1848132-1-zhao1.liu@linux.intel.com/
> 
> So I think we should drop this patch.

Hi Zhijian,

I'm not a "real" user and that bug was originally found by code reading.

So that fix won't block your drop. :-)

And I think the fix is worth being laned before cfmw_list gets dropped,
for being able to port backwards to stable QEMU.
 
> On 02/07/2024 22:34, Jonathan Cameron wrote:
> > From: Li Zhijian <lizhijian@fujitsu.com>
> > 
> > There is no user for this member. All '-M cxl-fmw.N' options have
> > been parsed and saved to CXLState.fixed_windows.
> > 
> > Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
> > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> > ---
> >   include/hw/cxl/cxl.h | 1 -
> >   hw/cxl/cxl-host.c    | 1 -
> >   2 files changed, 2 deletions(-)
> > 
> > diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h
> > index 75e47b6864..e3ecbef038 100644
> > --- a/include/hw/cxl/cxl.h
> > +++ b/include/hw/cxl/cxl.h
> > @@ -43,7 +43,6 @@ typedef struct CXLState {
> >       MemoryRegion host_mr;
> >       unsigned int next_mr_idx;
> >       GList *fixed_windows;
> > -    CXLFixedMemoryWindowOptionsList *cfmw_list;
> >   } CXLState;
> >   
> >   struct CXLHost {
> > diff --git a/hw/cxl/cxl-host.c b/hw/cxl/cxl-host.c
> > index c5f5fcfd64..926d3d3da7 100644
> > --- a/hw/cxl/cxl-host.c
> > +++ b/hw/cxl/cxl-host.c
> > @@ -335,7 +335,6 @@ static void machine_set_cfmw(Object *obj, Visitor *v, 
> > const char *name,
> >       for (it = cfmw_list; it; it = it->next) {
> >           cxl_fixed_memory_window_config(state, it->value, errp);
> >       }
> > -    state->cfmw_list = cfmw_list;
> >   }
> >   
> >   void cxl_machine_init(Object *obj, CXLState *state)