Re: [Xen-devel] [For Xen-4.10 PATCH] memory: Re-introduce an erroneously dropped line

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.06.17 at 14:04, <punit.agrawal@xxxxxxx> wrote:
> Commit 726b737574 makes an unrelated change deleting a line setting the
> page from mfn. Although the page variable is not used, it is an
> unrelated change. The setting of the page variable was introduced to
> match the else part of is_domain_direct_mapped() in populate_physmap().
> 
> Re-introduce the missing hunk.
> 
> Fixes: 726b737574 ("Avoid excess icache flushes in populate_physmap() before 
> domain has been created")
> Signed-off-by: Punit Agrawal <punit.agrawal@xxxxxxx>
> ---
>  xen/common/memory.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/xen/common/memory.c b/xen/common/memory.c
> index 34d2dda8b4..a3cb572530 100644
> --- a/xen/common/memory.c
> +++ b/xen/common/memory.c
> @@ -221,6 +221,7 @@ static void populate_physmap(struct memop_args *a)
>                  }
>  
>                  mfn = gpfn;
> +                page = mfn_to_page(mfn);
>              }
>              else
>              {

While I certainly don't mind this being re-added, I'm also not sure
it's worthwhile now that the line is gone, and it's not needed for
anything. I'll let other REST maintainers give their opinions ...

Jan


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