Re: SMMU 2-stage support

2015-04-15 Thread Will Deacon
On Tue, Apr 14, 2015 at 02:32:26PM +0100, Varun Sethi wrote: Hi Will, Hey Varun, -Original Message- From: iommu-boun...@lists.linux-foundation.org [mailto:iommu- boun...@lists.linux-foundation.org] On Behalf Of Will Deacon Sent: Monday, April 13, 2015 4:11 PM To: Baptiste

Re: [PATCH 2/5] iommu/mediatek: Add mt8173 IOMMU driver

2015-04-15 Thread Yong Wu
On Wed, 2015-04-15 at 11:20 +0900, Tomasz Figa wrote: On Tue, Apr 14, 2015 at 3:31 PM, Yong Wu yong...@mediatek.com wrote: + + piommu-protect_va = devm_kmalloc(piommu-dev, MTK_PROTECT_PA_ALIGN*2, style: Operators like * should have space on both sides. +

Re: [PATCH v10 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

2015-04-15 Thread Dave Young
On 04/15/15 at 01:47pm, Li, ZhenHua wrote: On 04/15/2015 08:57 AM, Dave Young wrote: Again, I think it is bad to use old page table, below issues need consider: 1) make sure old page table are reliable across crash 2) do not allow writing oldmem after crash Please correct me if I'm wrong,

Re: [PATCH 2/5] iommu/mediatek: Add mt8173 IOMMU driver

2015-04-15 Thread Tomasz Figa
On Wed, Apr 15, 2015 at 4:06 PM, Yong Wu yong...@mediatek.com wrote: On Wed, 2015-04-15 at 11:20 +0900, Tomasz Figa wrote: On Tue, Apr 14, 2015 at 3:31 PM, Yong Wu yong...@mediatek.com wrote: + + piommu-protect_va = devm_kmalloc(piommu-dev, MTK_PROTECT_PA_ALIGN*2,