RE: [PATCH 0/2][RFC] exclude ivshmem mr from vhost sections

["Wangxin (Alexander)" <wangxinxin.wang@huawei.com>]

Ping. 

> 
> The ivshmem me now mapped to vhost memory regions, and it reduces
> the number of available memslots of vhost backend, which may
> causes vhost backend memory slots limit check failure in
> vhost dev init.
> 
> Since ivshmem_bar2 not normal RAM in Guest, and it shouldn't
> have vhost DMAing into them, exclude it from the vhost sections.
> 
> The 1st patch re-spin Dave's patch, see link
>   https://lists.nongnu.org/archive/html/qemu-devel/2020-01/msg02370.html
> 
> However, I'm not sure is there any side effects, or maybe it's
> better to add a new device property like 'novhost/nodma'?
> 
> Thanks,
> Xin
> 
> Wang Xin (2):
>   memory: Allow a MemoryRegion to be marked no_vhost
>   misc/ivshmem: Mark shared memory regions as no vhost
> 
>  hw/misc/ivshmem.c     |  2 ++
>  hw/virtio/vhost.c     |  5 ++++-
>  include/exec/memory.h | 21 +++++++++++++++++++++
>  softmmu/memory.c      | 15 +++++++++++++++
>  4 files changed, 42 insertions(+), 1 deletion(-)
> 
> --
> 2.26.0.windows.1
>