arm: xen: mm: use __GPF_DMA32 for arm64

arm64 shares some code under arch/arm/xen, including mm.c. However ZONE_DMA is removed by commit ad67f5a("arm64: replace ZONE_DMA with ZONE_DMA32"). So add a check if CONFIG_ZONE_DMA32 is enabled use __GFP_DMA32. Signed-off-by: Peng Fan <[email protected]> Acked-by: Stefano Stabellini <[email protected]> Signed-off-by: Stefano Stabellini <[email protected]>
ambv · Oct 2, 2019 · ec066de · ec066de
1 parent 04ccbdc
commit ec066de
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
@@ -28,7 +28,10 @@ unsigned long xen_get_swiotlb_free_pages(unsigned int order)
 
 	for_each_memblock(memory, reg) {
 		if (reg->base < (phys_addr_t)0xffffffff) {
-			flags |= __GFP_DMA;
+			if (IS_ENABLED(CONFIG_ZONE_DMA32))
+				flags |= __GFP_DMA32;
+			else
+				flags |= __GFP_DMA;
 			break;
 		}
 	}