> From: Tian, Kevin
> Sent: Wednesday, April 1, 2020 2:24 PM
> To: Jacob Pan
> Subject: RE: [PATCH V10 08/11] iommu/vt-d: Add svm/sva invalidate function
>
> > From: Jacob Pan
> > Sent: Wednesday, April 1, 2020 2:14 AM
> >
> > On Sat, 28 Mar 2020 10:01:42 +
> > "Tian, Kevin" wrote:
> >
> >
> From: Jacob Pan
> Sent: Wednesday, April 1, 2020 5:08 AM
>
> On Tue, 31 Mar 2020 03:34:22 +
> "Tian, Kevin" wrote:
>
> > > From: Auger Eric
> > > Sent: Monday, March 30, 2020 12:05 AM
> > >
> > > On 3/28/20 11:01 AM, Tian, Kevin wrote:
> > > >> From: Jacob Pan
> > > >> Sent: Saturday, M
> From: Jacob Pan
> Sent: Wednesday, April 1, 2020 4:58 AM
>
> On Tue, 31 Mar 2020 02:49:21 +
> "Tian, Kevin" wrote:
>
> > > From: Auger Eric
> > > Sent: Sunday, March 29, 2020 11:34 PM
> > >
> > > Hi,
> > >
> > > On 3/28/20 11:01 AM, Tian, Kevin wrote:
> > > >> From: Jacob Pan
> > > >> S
> From: Jacob Pan
> Sent: Wednesday, April 1, 2020 2:14 AM
>
> On Sat, 28 Mar 2020 10:01:42 +
> "Tian, Kevin" wrote:
>
> > > From: Jacob Pan
> > > Sent: Saturday, March 21, 2020 7:28 AM
> > >
> > > When Shared Virtual Address (SVA) is enabled for a guest OS via
> > > vIOMMU, we need to pro
> From: Tian, Kevin
> Sent: Wednesday, April 1, 2020 1:43 PM
> To: Liu, Yi L ; alex.william...@redhat.com;
> Subject: RE: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> > From: Liu, Yi L
> > Sent: Tuesday, March 31, 2020 9:22 PM
> >
> > > From: Tian, Kevin
> > > Sent: Tuesday
> From: Liu, Yi L
> Sent: Tuesday, March 31, 2020 9:22 PM
>
> > From: Tian, Kevin
> > Sent: Tuesday, March 31, 2020 1:41 PM
> > To: Liu, Yi L ; alex.william...@redhat.com;
> > eric.au...@redhat.com
> > Subject: RE: [PATCH v1 1/8] vfio: Add
> VFIO_IOMMU_PASID_REQUEST(alloc/free)
> >
> > > From: L
> From: Jacob Pan
> Sent: Tuesday, March 31, 2020 11:55 PM
>
> On Tue, 31 Mar 2020 06:06:38 +
> "Tian, Kevin" wrote:
>
> > > From: Jacob Pan
> > > Sent: Tuesday, March 31, 2020 12:08 AM
> > >
> > > On Mon, 30 Mar 2020 05:40:40 +
> > > "Tian, Kevin" wrote:
> > >
> > > > > From: Jacob P
On Sat, 28 Mar 2020 10:08:52 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Saturday, March 21, 2020 7:28 AM
> >
> > From: Lu Baolu
> >
> > Enabling IOMMU in a guest requires communication with the host
> > driver for certain aspects. Use of PASID ID to enable Shared Virtual
> > Add
On Sat, 28 Mar 2020 10:04:38 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Saturday, March 21, 2020 7:28 AM
> >
> > Virtual command registers are used in the guest only, to prevent
> > vmexit cost, we cache the capability and store it during
> > initialization.
> >
> > Signed-off-by
On Sun, 29 Mar 2020 18:05:47 +0200
Auger Eric wrote:
> Hi Jacob,
>
> On 3/21/20 12:27 AM, Jacob Pan wrote:
> > When Shared Virtual Address (SVA) is enabled for a guest OS via
> > vIOMMU, we need to provide invalidation support at IOMMU API and
> > driver level. This patch adds Intel VT-d specifi
On Tue, 31 Mar 2020 03:34:22 +
"Tian, Kevin" wrote:
> > From: Auger Eric
> > Sent: Monday, March 30, 2020 12:05 AM
> >
> > On 3/28/20 11:01 AM, Tian, Kevin wrote:
> > >> From: Jacob Pan
> > >> Sent: Saturday, March 21, 2020 7:28 AM
> > >>
> > >> When Shared Virtual Address (SVA) is enabl
On Tue, 31 Mar 2020 02:49:21 +
"Tian, Kevin" wrote:
> > From: Auger Eric
> > Sent: Sunday, March 29, 2020 11:34 PM
> >
> > Hi,
> >
> > On 3/28/20 11:01 AM, Tian, Kevin wrote:
> > >> From: Jacob Pan
> > >> Sent: Saturday, March 21, 2020 7:28 AM
> > >>
> > >> When Shared Virtual Address (
On Sat, 28 Mar 2020 10:01:42 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Saturday, March 21, 2020 7:28 AM
> >
> > When Shared Virtual Address (SVA) is enabled for a guest OS via
> > vIOMMU, we need to provide invalidation support at IOMMU API and
> > driver level. This patch adds I
Hi Jacob,
On 3/31/20 6:08 PM, Jacob Pan wrote:
> Actually, this is not a bug. The current code has:
> #define QI_PC_PASID_SEL (QI_PC_TYPE | QI_PC_GRAN(1))
>
> Which already has the type and shift.
>
> In my vSVA series, I redefined granu such that I can use them in the 2D
> table loo
Hi Jacob,
On 3/31/20 6:13 PM, Jacob Pan wrote:
> On Mon, 30 Mar 2020 16:28:34 -0700
> Jacob Pan wrote:
>
>> On Fri, 27 Mar 2020 15:46:23 +0100
>> Auger Eric wrote:
>>
>>> Hi Jacob,
>>>
>>> On 3/21/20 12:27 AM, Jacob Pan wrote:
When Shared Virtual Memory is exposed to a guest via vIOMMU,
On Mon, 30 Mar 2020 16:28:34 -0700
Jacob Pan wrote:
> On Fri, 27 Mar 2020 15:46:23 +0100
> Auger Eric wrote:
>
> > Hi Jacob,
> >
> > On 3/21/20 12:27 AM, Jacob Pan wrote:
> > > When Shared Virtual Memory is exposed to a guest via vIOMMU,
> > > scalable IOTLB invalidation may be passed down f
Actually, this is not a bug. The current code has:
#define QI_PC_PASID_SEL (QI_PC_TYPE | QI_PC_GRAN(1))
Which already has the type and shift.
In my vSVA series, I redefined granu such that I can use them in the 2D
table lookup.
-#define QI_PC_ALL_PASIDS (QI_PC_TYPE | QI_PC_GRAN
On Tue, 31 Mar 2020 06:06:38 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Tuesday, March 31, 2020 12:08 AM
> >
> > On Mon, 30 Mar 2020 05:40:40 +
> > "Tian, Kevin" wrote:
> >
> > > > From: Jacob Pan
> > > > Sent: Saturday, March 28, 2020 7:54 AM
> > > >
> > > > On Fri, 27 M
On Sat, 28 Mar 2020 06:43:37 +
"Tian, Kevin" wrote:
> > From: Jacob Pan
> > Sent: Saturday, March 28, 2020 2:37 AM
> >
> > On Fri, 27 Mar 2020 10:03:26 +
> > "Tian, Kevin" wrote:
> >
> > > > From: Jacob Pan
> > > > Sent: Thursday, March 26, 2020 1:55 AM
> > > >
> > > > IOASID users
On 2020-03-31 2:59 pm, luanshi wrote:
Move error checking into common path to be consistent with
drivers/iommu/arm-smmu.c.
Signed-off-by: Liguang Zhang
---
drivers/iommu/arm-smmu-v3.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b
Move error checking into common path to be consistent with
drivers/iommu/arm-smmu.c.
Signed-off-by: Liguang Zhang
---
drivers/iommu/arm-smmu-v3.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index aa3ac2a
Hi Andre,
On 3/12/20 7:19 PM, Andre Przywara wrote:
> When we try to get an MSI cookie for a VFIO device, that can fail if
> CONFIG_IOMMU_DMA is not set. In this case iommu_get_msi_cookie() returns
> -ENODEV, and that should not be fatal.
>
> Ignore that case and proceed with the initialisation.
> From: Tian, Kevin
> Sent: Tuesday, March 31, 2020 1:41 PM
> To: Liu, Yi L ; alex.william...@redhat.com;
> eric.au...@redhat.com
> Subject: RE: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> > From: Liu, Yi L
> > Sent: Monday, March 30, 2020 10:37 PM
> >
> > > From: Tian, Kev
Hi Hellwig,
Thanks for your review, Hellwig. :-) inline reply.
> From: Christoph Hellwig
> Sent: Tuesday, March 31, 2020 3:56 PM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 7/8] vfio/type1: Add VFIO_IOMMU_CACHE_INVALIDATE
>
> > @@ -2629,6 +2638,46 @@ static long vfio_iommu_type1_ioctl(void
> *iom
Hi Jacob,
On 3/31/20 1:25 AM, Jacob Pan wrote:
> PASID cache type and shift of granularity bits are missing in
> the current code.
>
> Fixes: 6f7db75e1c46 ("iommu/vt-d: Add second level page table
> interface")
>
> Cc: Eric Auger
> Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
Thanks
Eri
On Tue, Mar 31, 2020 at 08:36:32AM +, Liu, Yi L wrote:
> > From: Liu, Yi L
> > Sent: Tuesday, March 31, 2020 4:33 PM
> > To: 'Christoph Hellwig'
> > Subject: RE: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
> >
> > > From: Christoph Hellwig
> > > Sent: Tuesday, March 31, 202
> From: Liu, Yi L
> Sent: Tuesday, March 31, 2020 4:33 PM
> To: 'Christoph Hellwig'
> Subject: RE: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> > From: Christoph Hellwig
> > Sent: Tuesday, March 31, 2020 3:54 PM
> > To: Liu, Yi L
> > Subject: Re: [PATCH v1 1/8] vfio: Add
>
> From: Christoph Hellwig
> Sent: Tuesday, March 31, 2020 3:54 PM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> Who is going to use thse exports? Please submit them together with
> a driver actually using them.
Hi Hellwig,
Sorry, maybe I misu
> From: Christoph Hellwig
> Sent: Tuesday, March 31, 2020 3:54 PM
> To: Liu, Yi L
> Subject: Re: [PATCH v1 1/8] vfio: Add VFIO_IOMMU_PASID_REQUEST(alloc/free)
>
> Who is going to use thse exports? Please submit them together with
> a driver actually using them.
Hi Hellwig,
These are exposed f
> @@ -2629,6 +2638,46 @@ static long vfio_iommu_type1_ioctl(void *iommu_data,
> }
> kfree(gbind_data);
> return ret;
> + } else if (cmd == VFIO_IOMMU_CACHE_INVALIDATE) {
Please refactor the spaghetti in this ioctl handler to use a switch
statement and
Who is going to use thse exports? Please submit them together with
a driver actually using them.
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Hi Will,
On 2020-03-31 13:14, Will Deacon wrote:
On Tue, Mar 31, 2020 at 01:06:11PM +0530, Sai Prakash Ranjan wrote:
On 2020-03-30 23:54, Doug Anderson wrote:
> On Sat, Mar 28, 2020 at 12:35 AM Sai Prakash Ranjan
> wrote:
> >
> > > Of course the fact that in practice we'll *always* see the war
On Tue, Mar 31, 2020 at 01:06:11PM +0530, Sai Prakash Ranjan wrote:
> On 2020-03-30 23:54, Doug Anderson wrote:
> > On Sat, Mar 28, 2020 at 12:35 AM Sai Prakash Ranjan
> > wrote:
> > >
> > > > Of course the fact that in practice we'll *always* see the warning
> > > > because there's no way to tea
Hi,
On 2020-03-30 23:54, Doug Anderson wrote:
Hi,
On Sat, Mar 28, 2020 at 12:35 AM Sai Prakash Ranjan
wrote:
> Of course the fact that in practice we'll *always* see the warning
> because there's no way to tear down the default DMA domains, and even
> if all devices *have* been nicely quiesc
On 2020/3/31 14:35, Tian, Kevin wrote:
From: Liu, Yi L
Sent: Sunday, March 22, 2020 8:33 PM
From: Liu Yi L
Shared Virtual Addressing (SVA), a.k.a, Shared Virtual Memory (SVM) on
Intel platforms allows address space sharing between device DMA and
applications. SVA can reduce programming complexi
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