Re: [PATCH 2/2] x86, mem-hotplug: update all PGDs for direct mappingand vmemmap mapping changes on 64bit.

[Haicheng Li]

Wu Fengguang wrote:
> > @@ -1033,6 +1038,7 @@ vmemmap_populate(struct page *start_page, unsigned long size, int node)
> >   		}
> >
> >   	}
> > +	sync_global_pgds((unsigned long)start_page, end);
>
> Here you removed the tlb flush in the original patch. Is it safe to do so?

Yes, I think so. Before this populate, such vmemmap mapping should be always zero, so it's optional 
to do tlb flush here.

-haicheng
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/