On Wed, 2016-07-13 at 15:47 +1000, alast...@au1.ibm.com wrote:
> From: Alastair D'Silva <alast...@d-silva.org>
> > This series allows the vmx_crypto module to be detected and
> automatically
> loaded via UDEV if the CPU supports the vector crypto feature.
> > Alastair D'
From: Alastair D'Silva <alast...@d-silva.org>
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it
From: Alastair D'Silva <alast...@d-silva.org>
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thre
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/oc
From: Alastair D'Silva <alast...@d-silva.org>
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
drivers/misc/ocxl
From: Alastair D'Silva <alast...@d-silva.org>
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva <alast...@d-
From: Alastair D'Silva <alast...@d-silva.org>
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+),
On Mon, 2018-05-07 at 19:37 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva <alast...@d-silva.org>
> >
> > The current implementation of TID allocation, using a global IDR,
> > may
> > resul
On Mon, 2018-05-07 at 20:14 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva <alast...@d-silva.org>
> >
> > In order for a userspace AFU driver to call the Power9 specific
> > OCXL_IOCTL_ENABLE_P9_
On Mon, 2018-05-07 at 19:17 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva <alast...@d-silva.org>
> >
> > This patch adds a CPU feature bit to show whether the CPU has
> > the TIDR registe
On Tue, 2018-05-08 at 13:50 +1000, Nicholas Piggin wrote:
> On Tue, 08 May 2018 10:41:55 +1000
> "Alastair D'Silva" <alast...@au1.ibm.com> wrote:
>
> > On Mon, 2018-05-07 at 20:14 +0200, Frederic Barrat wrote:
> > >
> > > Le 18/04/2018 à 03:08, Al
From: Alastair D'Silva <alast...@d-silva.org>
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva <alast...@d-
From: Alastair D'Silva <alast...@d-silva.org>
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/cputable.h | 3 ++-
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/oc
From: Alastair D'Silva <alast...@d-silva.org>
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc
From: Alastair D'Silva <alast...@d-silva.org>
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thre
From: Alastair D'Silva <alast...@d-silva.org>
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/cputable.h | 3 ++-
From: Alastair D'Silva <alast...@d-silva.org>
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc
From: Alastair D'Silva <alast...@d-silva.org>
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
drivers/misc/ocxl
From: Alastair D'Silva <alast...@d-silva.org>
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it
From: Alastair D'Silva <alast...@d-silva.org>
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+),
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/oc
From: Alastair D'Silva <alast...@d-silva.org>
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
drivers/misc/ocxl
From: Alastair D'Silva <alast...@d-silva.org>
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva <alast...@d-
From: Alastair D'Silva <alast...@d-silva.org>
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/cputable.h | 3 ++-
From: Alastair D'Silva <alast...@d-silva.org>
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+),
From: Alastair D'Silva <alast...@d-silva.org>
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it
From: Alastair D'Silva <alast...@d-silva.org>
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thre
From: Alastair D'Silva <alast...@d-silva.org>
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc
> -Original Message-
> From: Frederic Barrat <fbar...@linux.ibm.com>
> Sent: Friday, 11 May 2018 7:25 PM
> To: Alastair D'Silva <alast...@au1.ibm.com>; linuxppc-...@lists.ozlabs.org
> Cc: linux-kernel@vger.kernel.org; linux-...@vger.kernel.org
From: Alastair D'Silva <alast...@d-silva.org>
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Al
On Wed, 2018-02-21 at 12:25 +0100, Frederic Barrat wrote:
>
> Le 21/02/2018 à 07:43, Balbir Singh a écrit :
> > On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva <alast...@au1.ibm
> > .com> wrote:
> > > From: Alastair D'Silva <alast...@d-silva.org>
From: Alastair D'Silva <alast...@d-silva.org>
This series adds a new IOCTL for OpenCAPI, which exposes adapter
metadata to userspace.
---
v1->v2:
- Document the new IOCTL
Alastair D'Silva (2):
ocxl: Add get_metadata IOCTL to share OCXL information to userspace
ocxl:
From: Alastair D'Silva <alast...@d-silva.org>
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Al
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 5 +
1 file changed, 5 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index
On Wed, 2018-02-21 at 17:43 +1100, Balbir Singh wrote:
> On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva <alast...@au1.ibm.c
> om> wrote:
> > From: Alastair D'Silva <alast...@d-silva.org>
> >
> > Some required information is not exposed to userspace cur
On Thu, 2018-02-22 at 14:41 +1100, Balbir Singh wrote:
> On Thu, Feb 22, 2018 at 10:32 AM, Alastair D'Silva <alast...@au1.ibm.
> com> wrote:
> >
> > On Wed, 2018-02-21 at 17:43 +1100, Balbir Singh wrote:
> > > On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva &l
t; there are a few ways around it, if we care about this combination.
>
> Balbir Singh.
>
We have a number of reserved members at the end of the struct which can
be re-purposed for future information (with a corresponding bump of the
version number).
--
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819
From: Alastair D'Silva <alast...@d-silva.org>
This series adds a new IOCTL for OpenCAPI, which exposes adapter
metadata to userspace.
---
v1->v2:
- Document the new IOCTL
v2->v3:
- Rename metadata struct
- Document a couple of struct members that are not immediately obvio
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 5 +
1 file changed, 5 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index
From: Alastair D'Silva <alast...@d-silva.org>
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Al
On Tue, 2018-04-17 at 14:21 +1000, Andrew Donnellan wrote:
> On 17/04/18 12:09, Alastair D'Silva wrote:
> > From: Alastair D'Silva <alast...@d-silva.org>
> >
> > Switch the use of TIDR on it's CPU feature, rather than assuming it
> > is available based on
From: Alastair D'Silva <alast...@d-silva.org>
In order for a userspace AFU driver to call the Power9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
drivers/misc/ocxl
From: Alastair D'Silva <alast...@d-silva.org>
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/cputable.h | 3 ++-
From: Alastair D'Silva <alast...@d-silva.org>
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/kernel/process.c | 4 ++--
1 file changed, 2 insertions(+),
From: Alastair D'Silva <alast...@d-silva.org>
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 10 ++
1 file changed, 10 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/oc
From: Alastair D'Silva <alast...@d-silva.org>
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva <alast...@d-
From: Alastair D'Silva <alast...@d-silva.org>
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thre
From: Alastair D'Silva <alast...@d-silva.org>
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc
From: Alastair D'Silva <alast...@d-silva.org>
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it
From: Alastair D'Silva <alast...@d-silva.org>
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva <alast...@d-
From: Alastair D'Silva <alast...@d-silva.org>
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+),
From: Alastair D'Silva <alast...@d-silva.org>
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/oc
From: Alastair D'Silva <alast...@d-silva.org>
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thre
From: Alastair D'Silva <alast...@d-silva.org>
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc
From: Alastair D'Silva <alast...@d-silva.org>
In order for a userspace AFU driver to call the Power9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
Documentation/accelerators/o
From: Alastair D'Silva <alast...@d-silva.org>
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva <alast...@d-silva.org>
---
arch/powerpc/include/asm/cputable.h | 3 ++-
From: Alastair D'Silva
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Alastair D'Silva
---
drivers
On Wed, 2018-02-21 at 17:43 +1100, Balbir Singh wrote:
> On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva om> wrote:
> > From: Alastair D'Silva
> >
> > Some required information is not exposed to userspace currently
> > (eg. the
> > PASID), pass thi
On Wed, 2018-02-21 at 12:25 +0100, Frederic Barrat wrote:
>
> Le 21/02/2018 à 07:43, Balbir Singh a écrit :
> > On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva > .com> wrote:
> > > From: Alastair D'Silva
> > >
> > > Some required information is
From: Alastair D'Silva
This series adds a new IOCTL for OpenCAPI, which exposes adapter
metadata to userspace.
---
v1->v2:
- Document the new IOCTL
Alastair D'Silva (2):
ocxl: Add get_metadata IOCTL to share OCXL information to userspace
ocxl: Document the OCXL_IOCTL_GET_METADATA IO
From: Alastair D'Silva
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Alastair D'Silva
---
drivers
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 5 +
1 file changed, 5 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index 4f7af841d935..ddcc58d01cfb 100644
--- a/Documentation
On Thu, 2018-02-22 at 14:41 +1100, Balbir Singh wrote:
> On Thu, Feb 22, 2018 at 10:32 AM, Alastair D'Silva com> wrote:
> >
> > On Wed, 2018-02-21 at 17:43 +1100, Balbir Singh wrote:
> > > On Wed, Feb 21, 2018 at 3:57 PM, Alastair D'Silva > > bm.c
> > >
t; there are a few ways around it, if we care about this combination.
>
> Balbir Singh.
>
We have a number of reserved members at the end of the struct which can
be re-purposed for future information (with a corresponding bump of the
version number).
--
Alastair D'Silva
Open Source Developer
Linux Technology Centre, IBM Australia
mob: 0423 762 819
From: Alastair D'Silva
Some required information is not exposed to userspace currently (eg. the
PASID), pass this information back, along with other information which
is currently communicated via sysfs, which saves some parsing effort in
userspace.
Signed-off-by: Alastair D'Silva
---
drivers
From: Alastair D'Silva
This series adds a new IOCTL for OpenCAPI, which exposes adapter
metadata to userspace.
---
v1->v2:
- Document the new IOCTL
v2->v3:
- Rename metadata struct
- Document a couple of struct members that are not immediately obvious
Alastair D'Silva (2):
ocx
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 5 +
1 file changed, 5 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index 4f7af841d935..ddcc58d01cfb 100644
--- a/Documentation
On Mon, 2018-05-07 at 19:37 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva
> >
> > The current implementation of TID allocation, using a global IDR,
> > may
> > result in an errant process s
On Mon, 2018-05-07 at 20:14 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva
> >
> > In order for a userspace AFU driver to call the Power9 specific
> > OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify
On Mon, 2018-05-07 at 19:17 +0200, Frederic Barrat wrote:
>
> Le 18/04/2018 à 03:08, Alastair D'Silva a écrit :
> > From: Alastair D'Silva
> >
> > This patch adds a CPU feature bit to show whether the CPU has
> > the TIDR register available, enabling as_notify/wait
On Tue, 2018-05-08 at 13:50 +1000, Nicholas Piggin wrote:
> On Tue, 08 May 2018 10:41:55 +1000
> "Alastair D'Silva" wrote:
>
> > On Mon, 2018-05-07 at 20:14 +0200, Frederic Barrat wrote:
> > >
> > > Le 18/04/2018 à 03:08, Alastair D'Silva
From: Alastair D'Silva
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it's use is not applicable
From: Alastair D'Silva
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thread IDs.
Changelog:
v5
From: Alastair D'Silva
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc/ocxl/link.c | 2 +-
3 files changed, 4 insertions(+), 4
From: Alastair D'Silva
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index ddcc58d01cfb..14cefc020e2d 100644
--- a/Documentation
From: Alastair D'Silva
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/file.c | 25 +
include/uapi/misc/ocxl.h | 6
From: Alastair D'Silva
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/context.c | 5
From: Alastair D'Silva
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/cputable.h | 3 ++-
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
2 files changed
> -Original Message-
> From: Frederic Barrat
> Sent: Friday, 11 May 2018 7:25 PM
> To: Alastair D'Silva ; linuxppc-...@lists.ozlabs.org
> Cc: linux-kernel@vger.kernel.org; linux-...@vger.kernel.org;
> mi...@neuling.org; vaib...@linux.vnet.ibm.com;
> aneesh.ku...@l
From: Alastair D'Silva
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/file.c | 25 +
include/uapi/misc/ocxl.h | 4
From: Alastair D'Silva
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/context.c | 5
From: Alastair D'Silva
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel
From: Alastair D'Silva
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it's use is not applicable
From: Alastair D'Silva
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thread IDs.
Changelog:
v3
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index ddcc58d01cfb..14cefc020e2d 100644
--- a/Documentation
From: Alastair D'Silva
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc/ocxl/link.c | 2 +-
3 files changed, 4 insertions(+), 4
From: Alastair D'Silva
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/cputable.h | 3 ++-
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
2 files changed
From: Alastair D'Silva
In order for a userspace AFU driver to call the POWER9 specific
OCXL_IOCTL_ENABLE_P9_WAIT, it needs to verify that it can actually
make that call.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/file.c | 25 +
include/uapi/misc/ocxl.h | 4
From: Alastair D'Silva
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it's use is not applicable
From: Alastair D'Silva
Switch the use of TIDR on it's CPU feature, rather than assuming it
is available based on architecture.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/kernel/process.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel
From: Alastair D'Silva
The function removes the process element from NPU cache.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/pnv-ocxl.h | 2 +-
arch/powerpc/platforms/powernv/ocxl.c | 4 ++--
drivers/misc/ocxl/link.c | 2 +-
3 files changed, 4 insertions(+), 4
From: Alastair D'Silva
The Power 9 as_notify/wait feature provides a lower latency way to
signal a thread that work is complete. This series enables the use of
this feature from OpenCAPI adapters, as well as addressing a potential
starvation issue when allocating thread IDs.
Changelog:
v4
From: Alastair D'Silva
In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.
Signed-off-by: Alastair D'Silva
---
drivers/misc/ocxl/context.c | 5
From: Alastair D'Silva
This patch adds a CPU feature bit to show whether the CPU has
the TIDR register available, enabling as_notify/wait in userspace.
Signed-off-by: Alastair D'Silva
---
arch/powerpc/include/asm/cputable.h | 3 ++-
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
2 files changed
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 11 +++
1 file changed, 11 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index ddcc58d01cfb..14cefc020e2d 100644
--- a/Documentation
From: Alastair D'Silva
Signed-off-by: Alastair D'Silva
---
Documentation/accelerators/ocxl.rst | 10 ++
1 file changed, 10 insertions(+)
diff --git a/Documentation/accelerators/ocxl.rst
b/Documentation/accelerators/ocxl.rst
index ddcc58d01cfb..144595a80a1c 100644
--- a/Documentation
From: Alastair D'Silva
The current implementation of TID allocation, using a global IDR, may
result in an errant process starving the system of available TIDs.
Instead, use task_pid_nr(), as mentioned by the original author. The
scenario described which prevented it's use is not applicable
1 - 100 of 254 matches
Mail list logo
