Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Friday, November 9, 2018 9:40 AM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi,
>
> On 11/8/18 3:20 PM, Liu, Yi L wrote:
> > Hi,
> &g
04/12] iommu/vt-d: Add 256-bit invalidation
descriptor support
Hi,
On 11/8/18 11:49 AM, Liu, Yi L wrote:
Hi,
From: Lu Baolu [mailto:baolu...@linux.intel.com]
Sent: Thursday, November 8, 2018 10:17 AM
Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation
descriptor support
Hi Yi
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation
> >> descriptor support
> >>
> >> Hi,
> >>
> >> On 11/8/18 11:49 AM, Liu, Yi L wrote:
> >>> Hi,
> >>>
> >>>> From: Lu Baolu [mailto:baolu.
On 11/8/18 1:48 PM, Liu, Yi L wrote:
From: Liu, Yi L
Sent: Thursday, November 8, 2018 1:45 PM
+ memcpy(desc, qi->desc + (wait_index << shift),
Would "memcpy(desc, (unsigned long long) (qi->desc + (wait_index
<< shift)," be more safe?
Can that be compiled? memcpy() re
Hi,
On 11/8/18 1:45 PM, Liu, Yi L wrote:
From: Lu Baolu [mailto:baolu...@linux.intel.com]
Sent: Thursday, November 8, 2018 1:25 PM
Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
support
Hi,
On 11/8/18 11:49 AM, Liu, Yi L wrote:
Hi,
From: Lu Baolu
> From: Liu, Yi L
> Sent: Thursday, November 8, 2018 1:45 PM
> > + memcpy(desc, qi->desc + (wait_index << shift),
> > >>>
> > >>> Would "memcpy(desc, (unsigned long long) (qi->desc + (wait_index
> > >>> << shift)," be more safe?
> > >>
> > >> Can that be compiled? memcpy(
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 1:25 PM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi,
>
> On 11/8/18 11:49 AM, Liu, Yi L wrote:
> > Hi,
> &g
Hi,
On 11/8/18 11:49 AM, Liu, Yi L wrote:
Hi,
From: Lu Baolu [mailto:baolu...@linux.intel.com]
Sent: Thursday, November 8, 2018 10:17 AM
Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
support
Hi Yi,
On 11/7/18 2:07 PM, Liu, Yi L wrote:
Hi Baolu,
From: Lu
Hi,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, November 8, 2018 10:17 AM
> Subject: Re: [PATCH v4 04/12] iommu/vt-d: Add 256-bit invalidation descriptor
> support
>
> Hi Yi,
>
> On 11/7/18 2:07 PM, Liu, Yi L wrote:
> > Hi Baolu,
> &g
Hi Yi,
On 11/7/18 2:07 PM, Liu, Yi L wrote:
Hi Baolu,
From: Lu Baolu [mailto:baolu...@linux.intel.com]
Sent: Monday, November 5, 2018 1:32 PM
[...]
---
drivers/iommu/dmar.c| 83 +++--
drivers/iommu/intel-svm.c | 76 --
Hi Baolu,
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Monday, November 5, 2018 1:32 PM
[...]
> ---
> drivers/iommu/dmar.c| 83 +++--
> drivers/iommu/intel-svm.c | 76 --
> drivers/iommu/intel_irq_remapping.
Intel vt-d spec rev3.0 requires software to use 256-bit
descriptors in invalidation queue. As the spec reads in
section 6.5.2:
Remapping hardware supporting Scalable Mode Translations
(ECAP_REG.SMTS=1) allow software to additionally program
the width of the descriptors (128-bits or 256-bits) that
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