On Tue, Jul 31, 2018 at 11:41:23PM -0700, ok...@codeaurora.org wrote:
> I asked this question to Tony Luck before. If I remember right,
> his answer was:
>
> CPU guarantees outstanding writes to be flushed when a register write
> instruction is executed and an additional barrier instruction is not
On 8/1/2018 12:29 AM, Christoph Hellwig wrote:
I asked this question to Tony Luck before. If I remember right,
his answer was:
CPU guarantees outstanding writes to be flushed when a register write
instruction is executed and an additional barrier instruction is not
needed.
That would be great.
From: Kenneth Lee
WarpDrive is an accelerator framework to expose the hardware capabilities
directly to the user space. It makes use of the exist vfio and vfio-mdev
facilities. So the user application can send request and DMA to the
hardware without interaction with the kernel. This remove the la
From: Kenneth Lee
WarpDrive is a common user space accelerator framework. Its main component
in Kernel is called spimdev, Share Parent IOMMU Mediated Device. It exposes
the hardware capabilities to the user space via vfio-mdev. So processes in
user land can obtain a "queue" by open the device an
From: Kenneth Lee
This patch add sharing interface for a iommu_group. The new interface:
iommu_group_share_domain()
iommu_group_unshare_domain()
can be used by some virtual iommu_group (such as iommu_group for spimdev)
to share their parent's iommu_group.
When the domain of the
From: Kenneth Lee
SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ from
the general vfio-mdev:
1. It shares its parent's IOMMU.
2. There is no hardware resource attached to the mdev is created. The
hardware resource (A `queue') is allocated only when the mdev is
opened.
Curre
From: Kenneth Lee
Hisilicon QM is a general IP used by some Hisilicon accelerators. It
provides a general PCIE interface for the CPU and the accelerator to share
a group of queues.
This commit includes a library used by the accelerator driver to access
the QM hardware.
Signed-off-by: Kenneth Le
From: Kenneth Lee
The Hisilicon ZIP accelerator implements zlib and gzip algorithm support
for the software. It uses Hisilicon QM as the interface to the CPU, so it
is shown up as a PCIE device to the CPU with a group of queues.
This commit provides PCIE driver to the accelerator and register it
From: Kenneth Lee
The commit add spimdev support to the Hislicon QM driver, any
accelerator that use QM can share its queues to the user space.
Signed-off-by: Kenneth Lee
Signed-off-by: Zhou Wang
Signed-off-by: Hao Fang
Signed-off-by: Zaibo Xu
---
drivers/crypto/hisilicon/qm.c | 150 +++
From: Kenneth Lee
This is the sample code to demostrate how WrapDrive user application
should be.
It contains:
1. wd.[ch], the common library to provide WrapDrive interface.
2. drv/*, the user driver to access the hardware upon spimdev
3. test/*, the test application to use WrapDrive interface
Hi all,
this is a resend of the last two series plus additional cleanups. The
driver of it were the odd dma barriers in the ia64 sync_single_* methods,
but once I started to look into that area the fallback got bigger and
bigger..
___
iommu mailing list
No actually used anywhere.
Signed-off-by: Christoph Hellwig
---
arch/ia64/kernel/efi.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 9c09bf390cce..f77d80edddfe 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -842,7 +8
Looks like copy and paste from x86 that never actually got used.
Signed-off-by: Christoph Hellwig
---
arch/ia64/kernel/pci-dma.c | 19 ---
1 file changed, 19 deletions(-)
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index b5df084c0af4..50b6ad282a90 100644
The generic dma_direct_supported helper already used by intel-iommu on
x86 does a better job than the ia64 reimplementation.
Signed-off-by: Christoph Hellwig
---
arch/ia64/kernel/pci-dma.c | 13 -
drivers/iommu/intel-iommu.c | 2 --
2 files changed, 15 deletions(-)
diff --git a/ar
Signed-off-by: Christoph Hellwig
---
arch/ia64/kernel/pci-dma.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index 3c2884bef3d4..924966e5aa25 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -15,9 +15,6 @@
Signed-off-by: Christoph Hellwig
---
arch/ia64/include/asm/iommu.h | 1 -
arch/ia64/kernel/pci-dma.c| 5 -
2 files changed, 6 deletions(-)
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
index 156b9d8e1932..5397e5aa3704 100644
--- a/arch/ia64/include/asm/iommu.
These do nothing but duplicating an assert that would have triggered
earlier on setting the dma mask, so remove them.
Signed-off-by: Christoph Hellwig
---
arch/ia64/sn/pci/pci_dma.c | 29 -
1 file changed, 29 deletions(-)
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arc
Signed-off-by: Christoph Hellwig
---
arch/ia64/include/asm/iommu.h | 1 -
arch/ia64/kernel/pci-dma.c| 6 --
2 files changed, 7 deletions(-)
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
index 5397e5aa3704..7429a72f3f92 100644
--- a/arch/ia64/include/asm/iommu
ia64 currently explicitly assigns it to dma_ops, but that same work is
already done by intel_iommu_init a little later, so we can remove the
duplicate assignment and mark the variable static.
Signed-off-by: Christoph Hellwig
---
arch/ia64/kernel/pci-dma.c | 4
drivers/iommu/intel-iommu.c |
The original form of these was added (to the HP zx1 platform only) by
the following bitkeeper commit (by the way of the historic.git tree):
commit 66b99421d118a5ddd98a72913670b0fcf0a38d45
Author: Andrew Morton
Date: Sat Mar 13 17:05:37 2004 -0800
[PATCH] DMA: Fill gaping hole in DMA API in
On 08/01/2018 03:22 AM, Kenneth Lee wrote:
> From: Kenneth Lee
>
> SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ from
> the general vfio-mdev:
>
> 1. It shares its parent's IOMMU.
> 2. There is no hardware resource attached to the mdev is created. The
> hardware resource (A
On Wed, Aug 01, 2018 at 06:22:14PM +0800, Kenneth Lee wrote:
> From: Kenneth Lee
>
> WarpDrive is an accelerator framework to expose the hardware capabilities
> directly to the user space. It makes use of the exist vfio and vfio-mdev
> facilities. So the user application can send request and DMA
On Tue, Jul 31, 2018 at 09:24:13AM +0200, Christoph Hellwig wrote:
> On Tue, Jul 31, 2018 at 03:06:13PM +0900, Yoshinori Sato wrote:
> > On Wed, 25 Jul 2018 18:40:38 +0900,
> > Christoph Hellwig wrote:
> > >
> > > Hi all,
> > >
> > > can you review these patches to switch sh to use the generic
>
From: Kuninori Morimoto
Signed-off-by: Kuninori Morimoto
---
drivers/iommu/ipmmu-vmsa.c | 5 +
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index ee30be1..85447ec 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/
> From: Jerome Glisse
> Sent: Thursday, August 2, 2018 12:57 AM
>
> On Wed, Aug 01, 2018 at 06:22:14PM +0800, Kenneth Lee wrote:
> > From: Kenneth Lee
> >
> > WarpDrive is an accelerator framework to expose the hardware
> capabilities
> > directly to the user space. It makes use of the exist vfio
> From: Kenneth Lee
> Sent: Wednesday, August 1, 2018 6:22 PM
>
> From: Kenneth Lee
>
> WarpDrive is an accelerator framework to expose the hardware capabilities
> directly to the user space. It makes use of the exist vfio and vfio-mdev
> facilities. So the user application can send request and
On Wed, Aug 01, 2018 at 09:23:52AM -0700, Randy Dunlap wrote:
> Date: Wed, 1 Aug 2018 09:23:52 -0700
> From: Randy Dunlap
> To: Kenneth Lee , Jonathan Corbet ,
> Herbert Xu , "David S . Miller"
> , Joerg Roedel , Alex Williamson
> , Kenneth Lee , Hao
> Fang , Zhou Wang , Zaibo Xu
> , Philippe
> From: Kenneth Lee
> Sent: Wednesday, August 1, 2018 6:22 PM
>
> From: Kenneth Lee
>
> WarpDrive is a common user space accelerator framework. Its main
> component
> in Kernel is called spimdev, Share Parent IOMMU Mediated Device. It
Not sure whether "share parent IOMMU" is a good term here.
> From: Kenneth Lee
> Sent: Wednesday, August 1, 2018 6:22 PM
>
> From: Kenneth Lee
>
> This patch add sharing interface for a iommu_group. The new interface:
>
> iommu_group_share_domain()
> iommu_group_unshare_domain()
>
> can be used by some virtual iommu_group (such as iommu_gr
> From: Kenneth Lee
> Sent: Wednesday, August 1, 2018 6:22 PM
>
> From: Kenneth Lee
>
> SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ from
> the general vfio-mdev:
>
> 1. It shares its parent's IOMMU.
> 2. There is no hardware resource attached to the mdev is created. The
On Thu, Aug 02, 2018 at 02:59:33AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 02:59:33 +
> From: "Tian, Kevin"
> To: Kenneth Lee , Jonathan Corbet ,
> Herbert Xu , "David S . Miller"
> , Joerg Roedel , Alex Williamson
> , Kenneth Lee , Hao
> Fang , Zhou Wang , Zaibo Xu
> , Philippe
On Thu, Aug 02, 2018 at 03:21:25AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 03:21:25 +
> From: "Tian, Kevin"
> To: Kenneth Lee , Jonathan Corbet ,
> Herbert Xu , "David S . Miller"
> , Joerg Roedel , Alex Williamson
> , Kenneth Lee , Hao
> Fang , Zhou Wang , Zaibo Xu
> , Philippe
On Thu, Aug 02, 2018 at 02:33:12AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 02:33:12 +
> From: "Tian, Kevin"
> To: Jerome Glisse , Kenneth Lee
> CC: Hao Fang , Herbert Xu
> , "k...@vger.kernel.org"
> , Jonathan Corbet , Greg
> Kroah-Hartman , "linux-...@vger.kernel.org"
> , "Kuma
On Thu, Aug 02, 2018 at 03:17:03AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 03:17:03 +
> From: "Tian, Kevin"
> To: Kenneth Lee , Jonathan Corbet ,
> Herbert Xu , "David S . Miller"
> , Joerg Roedel , Alex Williamson
> , Kenneth Lee , Hao
> Fang , Zhou Wang , Zaibo Xu
> , Philippe
On Thu, Aug 02, 2018 at 03:14:38AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 03:14:38 +
> From: "Tian, Kevin"
> To: Kenneth Lee , Jonathan Corbet ,
> Herbert Xu , "David S . Miller"
> , Joerg Roedel , Alex Williamson
> , Kenneth Lee , Hao
> Fang , Zhou Wang , Zaibo Xu
> , Philippe
> From: Kenneth Lee [mailto:liguo...@hisilicon.com]
> Sent: Thursday, August 2, 2018 11:47 AM
>
> >
> > > From: Kenneth Lee
> > > Sent: Wednesday, August 1, 2018 6:22 PM
> > >
> > > From: Kenneth Lee
> > >
> > > SPIMDEV is "Share Parent IOMMU Mdev". It is a vfio-mdev. But differ
> from
> > > the
> From: Kenneth Lee
> Sent: Thursday, August 2, 2018 11:40 AM
>
> On Thu, Aug 02, 2018 at 02:59:33AM +, Tian, Kevin wrote:
> > > From: Kenneth Lee
> > > Sent: Wednesday, August 1, 2018 6:22 PM
> > >
> > > From: Kenneth Lee
> > >
> > > WarpDrive is an accelerator framework to expose the hardwa
> From: Kenneth Lee
> Sent: Thursday, August 2, 2018 12:16 PM
>
> On Thu, Aug 02, 2018 at 03:17:03AM +, Tian, Kevin wrote:
> > > From: Kenneth Lee
> > > Sent: Wednesday, August 1, 2018 6:22 PM
> > >
> > > From: Kenneth Lee
> > >
> > > This patch add sharing interface for a iommu_group. The ne
> From: Kenneth Lee
> Sent: Thursday, August 2, 2018 12:23 PM
>
> On Thu, Aug 02, 2018 at 03:14:38AM +, Tian, Kevin wrote:
> >
> > > From: Kenneth Lee
> > > Sent: Wednesday, August 1, 2018 6:22 PM
> > >
> > > From: Kenneth Lee
> > >
> > > WarpDrive is a common user space accelerator framework
On Thu, Aug 02, 2018 at 04:36:52AM +, Tian, Kevin wrote:
> Date: Thu, 2 Aug 2018 04:36:52 +
> From: "Tian, Kevin"
> To: Kenneth Lee
> CC: Kenneth Lee , Herbert Xu
> , "k...@vger.kernel.org"
> , Jonathan Corbet , Greg
> Kroah-Hartman , "linux-...@vger.kernel.org"
> , "Kumar, Sanjay K"
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