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

[Jonathan Cameron <Jonathan.Cameron@Huawei.com>]

On Fri, 5 Jul 2024 02:29:34 +0000
"Zhijian Li (Fujitsu)" <lizhijian@fujitsu.com> wrote:

> On 05/07/2024 10:15, Zhao Liu wrote:
> >> There is a new user for cfmw_list now
> >> 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. 🙂  
> 
> 
> "hw/cxl: Get rid of unused cfmw_list" is no longer needed.
> 
> 
> 
> > 
> > And I think the fix is worth being laned before cfmw_list gets dropped,
> > for being able to port backwards to stable QEMU.  
> 
> Your fix[0] requires CXLState.cfmw_list, and I think CXLState.cfmw_list was designed for *get* purpose
> but got mistake at that time.
> 
> [0] https://lore.kernel.org/qemu-devel/20240704093404.1848132-1-zhao1.liu@linux.intel.com/
Ok.  Michael, please ignore this one as the lack of use is result of another bug. 
I hadn't gotten to that fix yet, so missed the connection.

The rest of this series is unrelated.

Jonathan

> 
> 
> >     
> >> 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;
> >>>