5413:1-18:
> ERROR: nested lock+irqsave that reuses flags from line 5404.
>
Thanks. Please add
Fixes: 4a41c421f367 ("ibmvnic: serialize access to work queue on remove")
> Signed-off-by: Junlin Yang
Reviewed-by: Sukadev Bhattiprolu
a false positive. However, there is no reason to
> not initialize the variables unconditionally avoiding the warning.
Yeah, its a false positive, but initializing doesn't hurt.
>
> Fixes: 635e442f4a48 ("ibmvnic: merge ibmvnic_reset_init and ibmvnic_init")
> Signed-off-by: Michal Suchanek
Reviewed-by: Sukadev Bhattiprolu
Stephen Rothwell [s...@canb.auug.org.au] wrote:
> Hi all,
>
> Today's linux-next merge of the net-next tree got conflicts in:
>
> drivers/net/ethernet/ibm/ibmvnic.c
> drivers/net/ethernet/ibm/ibmvnic.h
>
> between commit:
>
> 4a41c421f367 ("ibmvnic: serialize access to work queue on remov
Andrew Donnellan [andrew.donnel...@au1.ibm.com] wrote:
> [+ Sukadev, Christophe]
>
> On 18/04/18 11:08, Alastair D'Silva wrote:
> > From: Alastair D'Silva
> >
> > The current implementation of TID allocation, using a global IDR, may
> > result in an errant process starving the system of availabl
Commit-ID: 9749adc3b2a23c91b2eda8758ff0c650d731aa2f
Gitweb: https://git.kernel.org/tip/9749adc3b2a23c91b2eda8758ff0c650d731aa2f
Author: Sukadev Bhattiprolu
AuthorDate: Tue, 13 Mar 2018 12:33:29 -0500
Committer: Arnaldo Carvalho de Melo
CommitDate: Fri, 16 Mar 2018 13:57:08 -0300
perf
esult
> in a broken pmu_events.c being generated.
I run into the problem on a 4.15-based kernel/xfs but not on a
3.10-based kernel! Have not investigated, but this fix is good.
>
> Fix this by adding the appropriate check in is_leaf_dir().
>
> Cc: Sukadev Bhattiprolu
> Signed-
://github.com/sukadev/linux/ p9-json-v5
for you to fetch changes up to 99c9dff949f2502964005f9afa8d60c89b446f2c:
perf vendor events: Update POWER9 events (2018-03-13 16:48:12 -0500)
Sukadev Bhattiprolu (1):
perf vendor events
John Garry [john.ga...@huawei.com] wrote:
> On 13/03/2018 20:10, Sukadev Bhattiprolu wrote:
>
> > Hi John,
> >
> > I have an xfs file system which seems to have d_type == DT_UNKNOWN for all
> > entries in 'tools/perf/pmu-events/arch/power8'! readdir(3) s
John Garry [john.ga...@huawei.com] wrote:
> On 13/03/2018 19:17, Sukadev Bhattiprolu wrote:
> >
> >
> > Building perf on Powerpc seems broken when using Arnaldo's perf/core branch
> > with HEAD as:
> >
> > 1b442ed ("perf test: Fix exit code
Building perf on Powerpc seems broken when using Arnaldo's perf/core branch
with HEAD as:
1b442ed ("perf test: Fix exit code for record+probe_libc_inet_pton.sh")
It maybe related to this commit:
commit d596299
Author: John Garry
Date: Thu Mar 8 18:58:29 2018 +080
From: Sukadev Bhattiprolu
Date: Fri, 9 Feb 2018 11:49:06 -0600
Subject: [PATCH 1/1] powerpc/vas: Fix cleanup when VAS is not configured
When VAS is not configured, unregister the platform driver. Also simplify
cleanup by delaying vas debugfs init until we know VAS is configured.
Signed-off-by
Michael Ellerman [m...@ellerman.id.au] wrote:
> Sukadev Bhattiprolu writes:
>
> > When VAS is not configured in the system, make sure to remove
> > the VAS debugfs directory and unregister the platform driver.
> >
> > Signed-off-by: Sukadev Bhattiprolu
>
When VAS is not configured in the system, make sure to remove
the VAS debugfs directory and unregister the platform driver.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-debug.c | 5 +
arch/powerpc/platforms/powernv/vas.c | 5 -
arch/powerpc/platforms
Add a couple of trace points in the VAS driver
Signed-off-by: Sukadev Bhattiprolu
---
Changelog [v2]
- Make TRACE_INCLUDE_PATH relative to
---
arch/powerpc/platforms/powernv/vas-trace.h | 112
arch/powerpc/platforms/powernv/vas-window.c | 9 +++
2 files
Remove a bogus line from arch/powerpc/platforms/powernv/Makefile that
was added by commit ece4e51 ("powerpc/vas: Export HVWC to debugfs").
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/powerpc
Fix the order of cleanup to ensure we free the name buffer in case
of an error creating 'hvwc' or 'info' files.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-debug.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/ar
Randy Dunlap [rdun...@infradead.org] wrote:
> > +struct ftw_setup_attr ftwattr;
> > +
> > +fd = open("/dev/ftw", O_RDWR);
> > +
> > +memset(&rxattr, 0, sizeof(rxattr));
>
> Is that supposed to be ftwattr (2x above)?
Yes. I agree with your other comments as well and will s
; + break;
> > + }
>
> return -EINVAL;
> > +}
>
> Do you expect to implement more ioctls? If not, just change the switch to
> an if ().
Maybe a couple more but changed it to an 'if' for now (and fixed an
error handling issue in ftw_file_init()
file.
Ok. Here is the updated patch.
Thanks for the review.
Sukadev
---
>From 1f347c199a0b1bbc528705c8e9ddd11c825a80fc Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu
Date: Thu, 2 Feb 2017 06:20:07 -0500
Subject: [PATCH 2/5] powerpc/ftw: Define FTW_SETUP ioctl API
Define the FTW_SETUP ioc
reference counter.
Yes the FTW driver avoids calling clear_thread_tidr() for the same reasons.
I don't have a strong case for exporting clear_thread_tidr(). Here is the
updated patch, exporting just the set_thread_tidr().
Thanks,
Sukadev
---
>From 204ee3c918f8dad46c1e40d2d3730b07c10a87a3 Mon
Remove a bogus line from arch/powerpc/platforms/powernv/Makefile that
was added by commit ece4e51 ("powerpc/vas: Export HVWC to debugfs").
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/Makefile | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/powerpc
/wake up.
PATCH 5/5 documents the API and includes an example of the usage.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v2]
- [Michael Neuling] Rename from drop "nx" from name "nx-ftw".
- [Michael Neuling] Use a single VAS_FTW_SETUP ioctl to simplify
in
Add a couple of trace points in the FTW driver
Signed-off-by: Sukadev Bhattiprolu
---
drivers/misc/ftw/ftw-trace.h | 75
drivers/misc/ftw/ftw.c | 6
2 files changed, 81 insertions(+)
create mode 100644 drivers/misc/ftw/ftw-trace.h
diff
Document the usage of the VAS Fast thread-wakeup API and add an entry in
MAINTAINERS file.
Thanks for input/comments from Benjamin Herrenschmidt, Michael Neuling,
Michael Ellerman, Robert Blackmore, Ian Munsie, Haren Myneni and Paul
Mackerras.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog
Define the FTW_SETUP ioctl interface for fast thread wakeup (FTW). A
follow-on patch will implement the FTW driver and ioctl.
Thanks to input from Ben Herrenschmidt, Michael Neuling, Michael Ellerman.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v2]
- [Michael Neuling] Use a single
https://github.com/sukadev/linux/tree/ftw-next
Thanks to input from Ben Herrenschmidt, Michael Ellerman, Michael
Neuling and Robert Blackmore.
Sukadev Bhattiprolu (5):
powerpc/vas: Remove a stray line in Makefile
powerpc/ftw: Define FTW_SETUP ioctl API
powerpc/ftw: Implement a si
Add a couple of trace points in the VAS driver.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-trace.h | 112
arch/powerpc/platforms/powernv/vas-window.c | 9 +++
2 files changed, 121 insertions(+)
create mode 100644 arch/powerpc
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/kernel/process.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index f20c1ad..d22055b 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1475,6
Export set_thread_tidr() and clear_thread_tidr() interfaces so they
can be used by external modules.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index
occur.
Signed-off-by: Michael Neuling
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v4]:
- We need to disable pagefaults after all when modifying the thread
reconfig registers. Use a mutex, rather than a spinlock around
the thread reconfig registers. Acquire the
Fix the order of cleanup to ensure we free the name buffer in case
of an error creating 'hvwc' or 'info' files.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-debug.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/ar
From: Sukadev Bhattiprolu
Date: Tue, 28 Nov 2017 13:39:43 -0600
Subject: [PATCH 1/1]: powerpc: block interrupts when updating TIDR
clear_thread_tidr() is called in interrupt context as a part of delayed
put of the task structure (i.e as a part of timer interrupt). To prevent
a deadlock, block
>From 958f8db089f4b89407fc4b89bccd3eaef585aa96 Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu
Date: Mon, 20 Nov 2017 12:53:15 -0600
Subject: [PATCH 1/1] powerpc/vas, export chip_to_vas_id()
Export the symbol chip_to_vas_id() to fix a build failure when
CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERN
Commit-ID: e795dd42b716ff36ebaa5384fd1be8458d6c9c34
Gitweb: https://git.kernel.org/tip/e795dd42b716ff36ebaa5384fd1be8458d6c9c34
Author: Sukadev Bhattiprolu
AuthorDate: Wed, 8 Nov 2017 18:42:03 -0500
Committer: Arnaldo Carvalho de Melo
CommitDate: Thu, 16 Nov 2017 14:49:54 -0300
perf
://github.com/sukadev/linux p9-json-v4
for you to fetch changes up to 4afb062d7d306bf56dbae9b5291e3515ccfede4c:
perf vendor events powerpc: Update POWER9 events (2017-11-08 18:42:03 -0500)
Sukadev Bhattiprolu (1):
perf vendor
Clean up vas.h and the debug code around ifdef vas_debug.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v3]
- Minor tweak to a debug message
---
arch/powerpc/platforms/powernv/vas-window.c | 8 +++--
arch/powerpc/platforms/powernv/vas.h| 54 ++---
2
Normally, the NX driver waits for the CRBs to be processed before closing
the window. But it is better to ensure that the credits are returned before
the window gets reassigned later.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 45
Polling for window cast out is listed in the spec, but turns out that
it is not strictly necessary and slows down window close. Making it a
stub for now.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 34 ++---
1 file changed, 17
Save the configured max window credits for a window in the vas_window
structure. We will need this when polling for return of window credits.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 --
arch/powerpc/platforms/powernv/vas.h| 1 +
2 files
Use a helper to have the hardware unpin and mark a window closed.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 22 +++---
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c
b/arch
Create a cpu to vasid mapping so callers can specify -1 instead of
trying to find a VAS id.
Changelog[v2]
[Michael Ellerman] Use per-cpu variables to simplify code.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas.c | 14 +-
1 file changed, 13
Have the COPY/PASTE instructions depend on CONFIG_BOOK3S_64 rather than
CONFIG_PPC_STD_MMU_64.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/kernel/process.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel
nly relevant to a receive window so we were
not setting it for a send window (which is is paired to a receive window
anyway). But to simplify reporting in debugfs, set the 'cop' field for the
send window also.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v3]:
- [Michael Ellerman]
A VAS window is normally in "busy" state for only a short duration.
Reduce the time we wait for the window to go to "not-busy" state to
speed-up vas_win_close() a bit.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 10 ++---
as(), that VAS can use to indicate
that the current process opened a send window. During context switch,
issue CP_ABORT only for processes that have the flag set.
Thanks for input from Nick Piggin, Michael Ellerman.
Cc: Nicholas Piggin
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v3]:
refers to this system-wide unique id as a Partition Send
Window ID which is expected to be used during fault handling. Hence the
"pswid" in the function names.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 5 +
arch/powerpc/platforms/powernv/va
useful if a thread running on one chip wants to open
a window on another chip (like the NX-842 driver does during start up).
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 9 +
arch/powerpc/platforms/powernv/vas.c | 11 +++
drivers/crypto/nx/nx-842
occur.
Cc: Aneesh Kumar K.V
Signed-off-by: Michael Neuling
Signed-off-by: Sukadev Bhattiprolu
---
Changlog[v3]:
- [Michael Ellerman] We don't need to disable/enable pagefaults
when emulating paste;
- [Michael Ellerman, Aneesh Kumar] Fix retval from emulate_paste(
: Sukadev Bhattiprolu
Signed-off-by: Philippe Bergheaud
Signed-off-by: Christophe Lombard
---
Changelog[v3]
- Merge changes with and address comments to Christophe's patch.
(i.e drop CONFIG_PPC_VAS; use CONFIG_PPC64; check CPU_ARCH_300
before setting TIDR). Defer foll
NX-842, the only user of VAS, sets the window credits to default values
but VAS should check the credits against the possible max values.
The VAS_WCREDS_MIN is not needed and can be dropped.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 ++
arch
te
address into their address space and then use copy and paste instructions
to submit the CRBs to the NX engine.
Note that kernel drivers will use vas_paste_crb() directly and don't need
this interface.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 7 +
Add support for user space receive window (for the Fast thread-wakeup
coprocessor type)
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v3]
- [Nick Piggin] Drop CP_ABORT since set_thread_uses_vas() does
that now (in earlier patch) and add a check for return value.
---
arch
Initialize a few missing window context fields from the window attributes
specified by the caller. These fields are currently set to their default
values by the caller (NX-842), but would be good to apply them anyway.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas
ng (1):
powerpc: Emulate paste instruction
Sukadev Bhattiprolu (17):
powerpc/vas: init missing fields from [rt]xattr
powerpc/vas: Validate window credits
powerpc/vas: Cleanup some debug code
powerpc/vas: Drop poll_window_cast_out().
powerpc/vas: Use helper to unpin/close window
powerpc/vas: R
NX-842, the only user of VAS, sets the window credits to default values
but VAS should check the credits against the possible max values.
The VAS_WCREDS_MIN is not needed and can be dropped.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 ++
arch
Initialize a few missing window context fields from the window attributes
specified by the caller. These fields are currently set to their default
values by the caller (NX-842), but would be good to apply them anyway.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas
Use a helper to have the hardware unpin and mark a window closed.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 22 +++---
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c
b/arch
A VAS window is normally in "busy" state for only a short duration.
Reduce the time we wait for the window to go to "not-busy" state to
speed-up vas_win_close() a bit.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 10 ++---
Save the configured max window credits for a window in the vas_window
structure. We will need this when polling for return of window credits.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 --
arch/powerpc/platforms/powernv/vas.h| 1 +
2 files
Create a cpu to vasid mapping so callers can specify -1 instead of
trying to find a VAS id.
Changelog[v2]
[Michael Ellerman] Use per-cpu variables to simplify code.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas.c | 14 +-
1 file changed, 13
nly relevant to a receive window so we were
not setting it for a send window (which is is paired to a receive window
anyway). But to simplify reporting in debugfs, set the 'cop' field for the
send window also.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/Makef
Normally, the NX driver waits for the CRBs to be processed before closing
the window. But it is better to ensure that the credits are returned before
the window gets reassigned later.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 45
Have the COPY/PASTE instructions depend on CONFIG_BOOK3S_64 rather than
CONFIG_PPC_STD_MMU_64.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/kernel/process.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel
useful if a thread running on one chip wants to open
a window on another chip (like the NX-842 driver does during start up).
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 9 +
arch/powerpc/platforms/powernv/vas.c | 11 +++
drivers/crypto/nx/nx-842
: Sukadev Bhattiprolu
Signed-off-by: Philippe Bergheaud
Signed-off-by: Christophe Lombard
---
Changelog[v3]
- Merge changes with and address comments to Christophe's patch.
(i.e drop CONFIG_PPC_VAS; use CONFIG_PPC64; check CPU_ARCH_300
before setting TIDR). Defer foll
refers to this system-wide unique id as a Partition Send
Window ID which is expected to be used during fault handling. Hence the
"pswid" in the function names.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 5 +
arch/powerpc/platforms/powernv/va
Add support for user space receive window (for the Fast thread-wakeup
coprocessor type)
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 59 +
1 file changed, 52 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms
as(), that VAS can use to indicate
that the current process opened a send window. During context switch,
issue CP_ABORT only for processes that have the flag set.
Thanks for input from Nick Piggin, Michael Ellerman.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/processor.h |
te
address into their address space and then use copy and paste instructions
to submit the CRBs to the NX engine.
Note that kernel drivers will use vas_paste_crb() directly and don't need
this interface.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 7 +
r the VAS window contexts.
Patches 11-18 add support for user space aka Fast thread-wakeup windows
in VAS. These include a patch from Michael Neuling to support emulating
the paste instruction.
Michael Neuling (1):
powerpc: Emulate paste instruction
Sukadev Bhattiprolu (17):
powerpc/vas:
occur.
Signed-off-by: Michael Neuling
Signed-off-by: Sukadev Bhattiprolu
---
Edit by Sukadev: Use PPC_PASTE() rather than the paste instruction since
in older versions the instruction required a third parameter.
---
arch/powerpc/include/asm/emulated_ops.h | 1 +
arch/powerpc/include/as
Polling for window cast out is listed in the spec, but turns out that
it is not strictly necessary and slows down window close. Making it a
stub for now.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 34 ++---
1 file changed, 17
Clean up vas.h and the debug code around ifdef vas_debug.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 8 +++--
arch/powerpc/platforms/powernv/vas.h| 56 +++--
2 files changed, 18 insertions(+), 46 deletions(-)
diff --git
A VAS window is normally in "busy" state for only a short duration.
Reduce the time we wait for the window to go to "not-busy" state to
speed-up vas_win_close() a bit.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 10 ++---
Sanitize cpu/chip id to VAS id mapping, improve vas_win_close()
performance and add a check for return of credits.
Also, fix up couple of initializations/error checks and cleanup
some comments and debug code.
Sukadev Bhattiprolu (10):
powerpc/vas: init missing fields from [rt]xattr
powerpc
NX-842, the only user of VAS, sets the window credits to default values
but VAS should check the credits against the possible max values.
The VAS_WCREDS_MIN is not needed and can be dropped.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 ++
arch
Save the configured max window credits for a window in the vas_window
structure. We will need this when polling for return of window credits.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 6 --
arch/powerpc/platforms/powernv/vas.h| 1 +
2 files
Use a helper to have the hardware unpin and mark a window closed.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 22 +++---
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c
b/arch
Cleanuup vas.h and the debug code around ifdef vas_debug.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 8 +++--
arch/powerpc/platforms/powernv/vas.h| 56 +++--
2 files changed, 18 insertions(+), 46 deletions(-)
diff --git
Create a cpu to vasid mapping so callers can specify -1 instead of
trying to find a VAS id.
Changelog[v2]
[Michael Ellerman] Use per-cpu variables to simplify code.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas.c | 14 +-
1 file changed, 13
Normally, the NX driver waits for the CRBs to be processed before closing
the window. But it is better to ensure that the credits are returned before
the window gets reassigned later.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 45
be useful if a thread running on one chip wants to open
a window on another chip (like the NX-842 driver does during start up).
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/vas.h | 9 +
arch/powerpc/platforms/powernv/vas.c | 11 +++
drivers/crypto/nx/nx
Polling for window cast out is listed in the spec, but turns out that
it is not strictly necessary and slows down window close. Making it a
stub for now.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas-window.c | 34 ++---
1 file changed, 17
Initialize a few missing window context fields from the window attributes
specified by the caller. These fields are currently set to their default
values by the caller (NX-842), but would be good to apply them anyway.
Signed-off-by: Sukadev Bhattiprolu
---
arch/powerpc/platforms/powernv/vas
: Sukadev Bhattiprolu
Signed-off-by: Philippe Bergheaud
Signed-off-by: Christophe Lombard
---
Changelog[v3]
- Merge changes with and address comments to Christophe's patch.
(i.e drop CONFIG_PPC_VAS; use CONFIG_PPC64; check CPU_ARCH_300
before setting TIDR). Defer foll
Commit-ID: 2a118e1bd22cad57318520d37e3a184b8846c6a2
Gitweb: http://git.kernel.org/tip/2a118e1bd22cad57318520d37e3a184b8846c6a2
Author: Sukadev Bhattiprolu
AuthorDate: Wed, 30 Aug 2017 21:42:23 -0400
Committer: Arnaldo Carvalho de Melo
CommitDate: Fri, 1 Sep 2017 14:46:00 -0300
perf
7; of
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
(2017-08-29 23:13:56 +0200)
are available in the git repository at:
https://github.com/sukadev/linux/ p9-json-v3
Sukadev Bhattiprolu (1):
perf vendor events powerpc: remove duplicate events
.../pmu-events/ar
Define macros for the VAS hardware registers and bit-fields as well
as couple of data structures needed by the VAS driver.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]
- Use u64/u32 instead of the uintXX versions.
Changelog[v7]
- Move the threshold control macros from
.
VAS is currently only supported with 64K page size.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]:
- [Michael Ellerman] VAS should be built-in and not a module;
drop the vas_exit() and free_vinst() code since its not
a module and might need some
Define interfaces (wrappers) to the 'copy' and 'paste' instructions
(which are new in PowerISA 3.0). These are intended to be used to
by NX driver(s) to submit Coprocessor Request Blocks (CRBs) to the
NX hardware engines.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]
Define helpers to initialize window context registers of the VAS
hardware. These will be used in follow-on patches when opening/closing
VAS windows.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]:
- Update comments (ISA references and some cleanup)
- Use 0 or 1 when setting
Define some helper functions to access the MMIO regions. We use these
in follow-on patches to read/write VAS hardware registers. They are
also used to later issue 'paste' instructions to submit requests to
the NX hardware engines.
Signed-off-by: Sukadev Bhattiprolu
---
Cha
-off-by: Sukadev Bhattiprolu
Reviewed-by: Dan Streetman
---
Changelog[v7]
[Michael Ellerman] Move the macros to rather than
to
Changelog[v3]
- Fix order of parameters in nx-842 driver.
---
arch/powerpc/include/asm/vas.h | 8
drivers/crypto/nx/nx-842
-by: Sukadev Bhattiprolu
---
Changelog[v8]
- [Michael Ellerman] Set task_state() and pass correct values to
schedule_timeout().
Changelog[v4]:
- Drop the poll for credits return (we can set the required credit,
but cannot really find the available credit at a
window and to open
a send window that kernel subsystems can use to access the NX engines.
The interface to open a receive window is expected to be invoked for each
instance of VAS in the system.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]:
- [Michael Ellerman] Drop vas_initialized
Define helpers to allocate/free VAS window objects. These will
be used in follow-on patches when opening/closing windows.
Changelog[v8]:
- [Michael Ellerman] Make some functions static; retry if
ida_get_new() fails with EAGAIN; fix a couple of leak in ids
Signed-off-by: Sukadev
- Minor reorgs and tweaks to register field settings to make it
easier to add support for user space windows.
- Skip writing to read-only registers
- Start window indexing from 0 rather than 1
Changelog[v2]
- Use vas-id, HVWC, UWC and paste address, entries from devic
be open in VAS (i.e connected to an NX engine).
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v8]:
- [Michael Ellerman] Drop vas_initialized() check; defer code
that sets pswid;
Changelog[v7]:
- Initialize txwin->user_win field for FTW windows.
Changelog
Michael Ellerman [m...@ellerman.id.au] wrote:
> Hi Suka,
>
> A few more things ...
>
> Sukadev Bhattiprolu writes:
>
> > diff --git a/arch/powerpc/platforms/powernv/copy-paste.h
> > b/arch/powerpc/platforms/powernv/copy-paste.h
> > new file mode 100644
>
Michael Ellerman [m...@ellerman.id.au] wrote:
> Hi Suka,
>
> More comments :)
Thanks!
>
> Sukadev Bhattiprolu writes:
>
> > diff --git a/arch/powerpc/platforms/powernv/vas-window.c
> > b/arch/powerpc/platforms/powernv/vas-window.c
> > index 2dd4b63..2
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