Re: [Xen-devel] Load increase after memory upgrade (part2)

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.02.12 at 20:28, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
>@@ -1550,7 +1552,11 @@ static void *__vmalloc_area_node(struct vm_struct 
>*area, gfp_t gfp_mask,
>       struct page **pages;
>       unsigned int nr_pages, array_size, i;
>       gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
>-
>+      gfp_t dma_mask = gfp_mask & (__GFP_DMA | __GFP_DMA32);
>+      if (xen_pv_domain()) {
>+              if (dma_mask == (__GFP_DMA | __GFP_DMA32))

I didn't spot where you force this normally invalid combination, without
which the change won't affect vmalloc32() in a 32-bit kernel.

>+                      gfp_mask &= (__GFP_DMA | __GFP_DMA32);

                        gfp_mask &= ~(__GFP_DMA | __GFP_DMA32);

Jan

>+      }
>       nr_pages = (area->size - PAGE_SIZE) >> PAGE_SHIFT;
>       array_size = (nr_pages * sizeof(struct page *));
> 



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