On Wed, May 05, 2021 at 07:21:20PM -0300, Jason Gunthorpe wrote:
> On Wed, May 05, 2021 at 01:04:46PM -0700, Jacob Pan wrote:
> > Hi Jason,
> >
> > On Wed, 5 May 2021 15:00:23 -0300, Jason Gunthorpe wrote:
> >
> > > On Wed, May 05, 2021 at 10:22:59AM -0700, Jacob Pan wrote:
> > >
> > > > Global
On Wed, May 05, 2021 at 01:04:46PM -0700, Jacob Pan wrote:
> Hi Jason,
>
> On Wed, 5 May 2021 15:00:23 -0300, Jason Gunthorpe wrote:
>
> > On Wed, May 05, 2021 at 10:22:59AM -0700, Jacob Pan wrote:
> >
> > > Global and pluggable are for slightly separate reasons.
> > > - We need global PASID on
Hi Jason,
On Wed, 5 May 2021 15:00:23 -0300, Jason Gunthorpe wrote:
> On Wed, May 05, 2021 at 10:22:59AM -0700, Jacob Pan wrote:
>
> > Global and pluggable are for slightly separate reasons.
> > - We need global PASID on VT-d in that we need to support shared
> > workqueues (SWQ). E.g. One SWQ
On Wed, May 05, 2021 at 10:22:59AM -0700, Jacob Pan wrote:
> Global and pluggable are for slightly separate reasons.
> - We need global PASID on VT-d in that we need to support shared
> workqueues (SWQ). E.g. One SWQ can be wrapped into two mdevs then assigned
> to two VMs. Each VM uses its privat
Hi Jason,
On Tue, 4 May 2021 20:15:30 -0300, Jason Gunthorpe wrote:
> On Tue, May 04, 2021 at 03:11:54PM -0700, Jacob Pan wrote:
>
> > > It is a weird way to use xarray to have a structure which
> > > itself is just a wrapper around another RCU protected structure.
> > >
> > > Make the caller
From: Suravee Suthikulpanit
[ Upstream commit 994d6608efe4a4c8834bdc5014c86f4bc6aceea6 ]
In early AMD desktop/mobile platforms (during 2013), when the IOMMU
Performance Counter (PMC) support was first introduced in
commit 30861ddc9cca ("perf/x86/amd: Add IOMMU Performance Counter
resource manage
From: Paul Menzel
[ Upstream commit 715601e4e36903a653cd4294dfd3ed0019101991 ]
This reverts commit 6778ff5b21bd8e78c8bd547fd66437cf2657fd9b.
The original commit tries to address an issue, where PMC power-gating
causing the IOMMU PMC pre-init test to fail on certain desktop/mobile
platforms wher
On Wed, May 05, 2021 at 02:28:53PM +1000, Alexey Kardashevskiy wrote:
> This is a good feature in general when let's say there is a linux supported
> device which has a proprietary device firmware update tool which only exists
> as an x86 binary and your hardware is not x86 - running qemu + vfio i
From: Suravee Suthikulpanit
[ Upstream commit 994d6608efe4a4c8834bdc5014c86f4bc6aceea6 ]
In early AMD desktop/mobile platforms (during 2013), when the IOMMU
Performance Counter (PMC) support was first introduced in
commit 30861ddc9cca ("perf/x86/amd: Add IOMMU Performance Counter
resource manage
From: Paul Menzel
[ Upstream commit 715601e4e36903a653cd4294dfd3ed0019101991 ]
This reverts commit 6778ff5b21bd8e78c8bd547fd66437cf2657fd9b.
The original commit tries to address an issue, where PMC power-gating
causing the IOMMU PMC pre-init test to fail on certain desktop/mobile
platforms wher
From: Suravee Suthikulpanit
[ Upstream commit 994d6608efe4a4c8834bdc5014c86f4bc6aceea6 ]
In early AMD desktop/mobile platforms (during 2013), when the IOMMU
Performance Counter (PMC) support was first introduced in
commit 30861ddc9cca ("perf/x86/amd: Add IOMMU Performance Counter
resource manage
From: Paul Menzel
[ Upstream commit 715601e4e36903a653cd4294dfd3ed0019101991 ]
This reverts commit 6778ff5b21bd8e78c8bd547fd66437cf2657fd9b.
The original commit tries to address an issue, where PMC power-gating
causing the IOMMU PMC pre-init test to fail on certain desktop/mobile
platforms wher
From: Suravee Suthikulpanit
[ Upstream commit 994d6608efe4a4c8834bdc5014c86f4bc6aceea6 ]
In early AMD desktop/mobile platforms (during 2013), when the IOMMU
Performance Counter (PMC) support was first introduced in
commit 30861ddc9cca ("perf/x86/amd: Add IOMMU Performance Counter
resource manage
From: Paul Menzel
[ Upstream commit 715601e4e36903a653cd4294dfd3ed0019101991 ]
This reverts commit 6778ff5b21bd8e78c8bd547fd66437cf2657fd9b.
The original commit tries to address an issue, where PMC power-gating
causing the IOMMU PMC pre-init test to fail on certain desktop/mobile
platforms wher
From: Xiang Chen
[ Upstream commit 6cc7e5a9c6b02507b9be5a99b51e970afa91c85f ]
It may send a invalid tlb sync for smmuv3 if iotlb_gather is not valid
(iotlb_gather->pgsize = 0). So add a check to avoid invalid iotlb sync
for it.
Signed-off-by: Xiang Chen
Link:
https://lore.kernel.org/r/1617109
On Wed, May 05, 2021 at 07:39:14PM +0700, Suthikulpanit, Suravee wrote:
> Peter,
>
> On 5/4/2021 7:13 PM, Peter Zijlstra wrote:
> > On Tue, May 04, 2021 at 06:58:29PM +0700, Suthikulpanit, Suravee wrote:
> > > Peter,
> > >
> > > On 5/4/2021 4:39 PM, Peter Zijlstra wrote:
> > > > On Tue, May 04, 2
Peter,
On 5/4/2021 7:13 PM, Peter Zijlstra wrote:
On Tue, May 04, 2021 at 06:58:29PM +0700, Suthikulpanit, Suravee wrote:
Peter,
On 5/4/2021 4:39 PM, Peter Zijlstra wrote:
On Tue, May 04, 2021 at 01:52:36AM -0500, Suravee Suthikulpanit wrote:
2. Since AMD IOMMU PMU does not support interrup
Hi, once more!
On 04/05/2021 07:52, Suravee Suthikulpanit wrote:
On certain AMD platforms, when the IOMMU performance counter source
(csource) field is zero, power-gating for the counter is enabled, which
prevents write access and returns zero for read access.
This can cause invalid perf result
Hi Jason,
On 4/29/21 10:04 PM, Jason Gunthorpe wrote:
> On Thu, Apr 29, 2021 at 03:26:55PM +0200, Auger Eric wrote:
>> From the pseudo code,
>>
>> gpa_ioasid_id = ioctl(ioasid_fd, CREATE_IOASID, ..)
>> ioctl(ioasid_fd, SET_IOASID_PAGE_TABLES, ..)
>>
>> I fail to understand whether the SET_IOAS
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