Re: [Qemu-devel] [PATCH 1/2] memory: Fix the memory region type assignment order

[Alex Williamson <alex.williamson@redhat.com>]

On Thu, 17 Jan 2019 21:53:16 +0000
"Singh, Brijesh" <brijesh.singh@amd.com> wrote:

> Currently, a callback registered through the RAMBlock notifier
> is not able to get the memory region type (i.e callback is not
> able to use memory_region_is_ram_device function). This is
> because mr->ram assignment happens _after_ the memory is allocated
> whereas the callback is executed during allocation.
> 
> Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1667249
> Sugegsted-by: Alex Williamson <alex.williamson@redhat.com>

s/Sugegsted/Suggested/

> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
> ---
>  memory.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/memory.c b/memory.c
> index 61d66e4441..9ec15349dd 100644
> --- a/memory.c
> +++ b/memory.c
> @@ -1652,10 +1652,17 @@ void memory_region_init_ram_device_ptr(MemoryRegion *mr,
>                                         uint64_t size,
>                                         void *ptr)
>  {
> -    memory_region_init_ram_ptr(mr, owner, name, size, ptr);
> +    memory_region_init(mr, owner, name, size);
> +    mr->ram = true;
> +    mr->terminates = true;
>      mr->ram_device = true;
>      mr->ops = &ram_device_mem_ops;
>      mr->opaque = mr;
> +    mr->destructor = memory_region_destructor_ram;
> +    mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
> +    /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL.  */
> +    assert(ptr != NULL);
> +    mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
>  }
>  
>  void memory_region_init_alias(MemoryRegion *mr,

Reviewed-by: Alex Williamson <alex.williamson@redhat.com>