linux-kernel - [PATCH] arm: xen: mm: use __GPF

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Date:   Tue, 9 Jul 2019 08:22:30 +0000
From:   Peng Fan <peng.fan@....com>
To:     "sstabellini@...nel.org" <sstabellini@...nel.org>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>
CC:     dl-linux-imx <linux-imx@....com>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Peng Fan <peng.fan@....com>,
        "van.freenix@...il.com" <van.freenix@...il.com>
Subject: [PATCH] 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
ad67f5a6545("arm64: replace ZONE_DMA with ZONE_DMA32").
So to ARM64, need use __GFP_DMA32.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm/xen/mm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index e1d44b903dfc..a95e76d18bf9 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c
@@ -27,7 +27,7 @@ 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;
+			flags |= __GFP_DMA | __GFP_DMA32;
 			break;
 		}
 	}
-- 
2.16.4