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From: Peng Fan <peng.fan@nxp.com>
To: "sstabellini@kernel.org" <sstabellini@kernel.org>,
	"linux@armlinux.org.uk" <linux@armlinux.org.uk>,
	"julien.grall@arm.com" <julien.grall@arm.com>
Cc: dl-linux-imx <linux-imx@nxp.com>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"van.freenix@gmail.com" <van.freenix@gmail.com>
Subject: RE: [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64
Date: Tue, 27 Aug 2019 09:27:53 +0000	[thread overview]
Message-ID: <AM0PR04MB44818BB69CAD35DC989A416988A00@AM0PR04MB4481.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <AM0PR04MB448135E1B2C85F0B6029F7B788C70@AM0PR04MB4481.eurprd04.prod.outlook.com>

Ping again..

+Julien

> Subject: RE: [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64
> 
> Hi Russell, Stefano
> 
> > Subject: [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64
> 
> Any comments?
> 
> >
> > 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@nxp.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;
> >  		}
> >  	}
> 
> Thanks,
> Peng.

Thanks,
Peng.

> 
> > --
> > 2.16.4


  reply	other threads:[~2019-08-27  9:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-09  8:22 [PATCH] arm: xen: mm: use __GPF_DMA32 for arm64 Peng Fan
2019-07-23  3:21 ` Peng Fan
2019-08-27  9:27   ` Peng Fan [this message]
2019-08-27  9:45     ` Russell King - ARM Linux admin
2019-08-27 12:23 ` Robin Murphy
2019-08-28  1:48   ` Peng Fan
2019-08-28 18:09     ` Stefano Stabellini
2019-08-29  2:46       ` Peng Fan

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