If the PCI channel has gone down, don't attempt to poke the hardware.
We need to guard every time cxl_whatever_(read|write) is called. This
is because a call to those functions will dereference an offset into an
mmio register, and the mmio mappings get invalidated in the EEH
teardown.
Check in
Previously the SPA was allocated and freed upon entering and leaving
AFU-directed mode. This causes some issues for error recovery - contexts
hold a pointer inside the SPA, and they may persist after the AFU has
been detached.
We would ideally like to allocate the SPA when the AFU is allocated,
On 08/11/2015 12:50 PM, Ran Shalit wrote:
Hello,
I would like to ask if anyone tried remote debugging with
gdb/gdbserver on powerpc.
[snip]
^
As an alternative, Is anyone familiar with binary package with
gdb/gdbserver for powerpc used with x86 host ?
I use
Looks like the majority of uses in this file the conditional block is only
one line then it makes sense (or at least in terms of numbers of lines... fair
enough), however, if you have a conditional block spanning multiple lines, I
don't like.
Much as this is a massive nit pick, I have split
On Tue, Aug 11, 2015 at 6:47 AM, Scott Wood scottw...@freescale.com wrote:
On Tue, 2015-08-11 at 06:45 +0300, Ran Shalit wrote:
On Tue, Aug 11, 2015 at 5:29 AM, Scott Wood scottw...@freescale.com wrote:
On Mon, 2015-08-10 at 13:40 +0300, Ran Shalit wrote:
On Mon, Aug 10, 2015 at 10:48 AM,
On Tue, 28 Jul 2015 15:28:41 +1000
Daniel Axtens d...@axtens.net wrote:
Provide a kernel API and a sysfs entry which allow a user to specify
that when a card is PERSTed, it's image will stay the same, allowing
it to participate in EEH.
cxl_reset is used to reflash the card. In that case, we
Hi Michael,
Nikunj A Dadhania nik...@linux.vnet.ibm.com writes:
In some situations, a NUMA guest that supports
ibm,dynamic-memory-reconfiguration node will end up having flat NUMA
distances between nodes. This is because of two problems in the
current code.
1) Different representations of
Hi Cyril,
- PCI regions are allocated in cxl_map_adapter_regs.
Therefore they should be released in unmap, not elsewhere.
You've changed the order in which cxl_remove_adapter() does its work, which,
I'm sure you've considered and it's fine, best to check.
Yeah, I have considered
We are not interested in interrupts for partially transmitted frames.
Unlike SCC and FCC, the FEC doesn't handle the I bit in buffer
descriptors, instead it defines two interrupt bits, TXB and TXF.
We have to mask TXB in order to only get interrupts once the
frame is fully transmitted.
On Tue, 28 Jul 2015 15:28:42 +1000
Daniel Axtens d...@axtens.net wrote:
EEH (Enhanced Error Handling) allows a driver to recover from the
temporary failure of an attached PCI card. Enable basic CXL support
for EEH.
Same thoughts about the config option as in 8/10.
As I've mentioned to you
Extract a new module to share the code between other modules.
There is no functional change.
Signed-off-by: Andy Shevchenko andriy.shevche...@linux.intel.com
---
arch/powerpc/platforms/pseries/Makefile | 1 +
arch/powerpc/platforms/pseries/of_helpers.c | 38 +
In case we have node without '/' strrchr() returns NULL which might lead to
crash. Replace strrchr() by kbasename() and modify condition to avoid such
behaviour.
Suggested-by: Segher Boessenkool seg...@kernel.crashing.org
Signed-off-by: Andy Shevchenko andriy.shevche...@linux.intel.com
---
The derive_parent() has similar semantics to what we have in newly introduced
of_helpers module. The replacement reduces code base and propagates the actual
error code to the caller.
Signed-off-by: Andy Shevchenko andriy.shevche...@linux.intel.com
---
arch/powerpc/platforms/pseries/dlpar.c | 31
So I'm not super all over the putting all sorts of code inside CONFIG_CXL_EEH,
I understand that there is another driver being merged and they'll use
CONFIG_CXL_EEH so that both this driver and the other driver can go in the
same
merge window but does this mean you need to put it around
-Original Message-
From: David Miller [mailto:da...@davemloft.net]
From: Madalin Bucur madalin.bu...@freescale.com
Date: Wed, 5 Aug 2015 18:41:28 +0300
Export per CPU counters through debugfs.
Signed-off-by: Madalin Bucur madalin.bu...@freescale.com
This is absolutely
In case we have a full node name like /foo/bar and /foo is not found the
parent_path left unfreed. So, free a memory before return to a caller.
Signed-off-by: Andy Shevchenko andriy.shevche...@linux.intel.com
---
arch/powerpc/platforms/pseries/of_helpers.c | 6 ++
1 file changed, 2
The helper kstrndup() will do the same in one line.
Signed-off-by: Andy Shevchenko andriy.shevche...@linux.intel.com
---
arch/powerpc/platforms/pseries/of_helpers.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/of_helpers.c
Hi Scott,
Could you please take some times help to review this patch?
Thanks.
Best Regards,
Yuan Yao
-Original Message-
From: Linuxppc-dev [mailto:linuxppc-dev-
bounces+yao.yuan=freescale@lists.ozlabs.org] On Behalf Of Yuan Yao
Sent: Thursday, July 23, 2015 11:01 AM
To:
We are not interested in interrupts for partially transmitted frames,
we have to clear BD_ENET_TX_INTR explicitly otherwise it may remain
from a previously used descriptor.
Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
---
drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c | 3 ++-
On 08/06/2015 02:11 PM, Gavin Shan wrote:
This adds the refcount to PE, which represents number of PCI
devices contained in the PE. When last device leaves from the
PE, the PE together with its consumed resources (IO, DMA, PELTM,
PELTV) are released, to support PCI hotplug.
Signed-off-by: Gavin
Here is a short description of the SDK/ethernet repository branches used for
the DPAA
drivers and Gianfar Ethernet driver.
:: DPAA Upstreaming branches:
:. ldup
- development branch for the DPAA upstreamable drivers (QBMan, FMan, dpaa_eth)
- changes are staged here for submission to the
Hello,
I would like to ask if anyone tried remote debugging with
gdb/gdbserver on powerpc.
I've tried to cross-compile gdb for powerpc, but I get into troubles.
I am using the following compiler:
powerpc-buildroot-linux-gnu-gcc (Buildroot 2014.11) 4.8.3
I've downloaded several version, gdb
On Tue, 2015-08-11 at 05:35 -0500, Yuan Yao-B46683 wrote:
Hi Scott,
Could you please take some times help to review this patch?
Thanks.
Best Regards,
Yuan Yao
I've already pushed it to my next branch.
-Scott
___
Linuxppc-dev mailing list
On 07/08/15 17:34, Julien Grall wrote:
Hi all,
This patch series aims to use the memory terminologies described in
include/xen/mm.h [1] for Linux xen code.
Applied to for-linus-4.3, thanks.
David
___
Linuxppc-dev mailing list
Hi Scott,
Quoting Scott Wood (2015-06-18 19:49:10)
The existing device tree bindings are error-prone and inflexible.
Correct the mistake by moving the knowledge into the driver, which
has more flexibility in describing the quirks of each chip. This leaves
the device tree to its proper role
From: Christophe Leroy christophe.le...@c-s.fr
Date: Tue, 11 Aug 2015 12:11:00 +0200 (CEST)
We are not interested in interrupts for partially transmitted frames,
we have to clear BD_ENET_TX_INTR explicitly otherwise it may remain
from a previously used descriptor.
Signed-off-by: Christophe
From: Christophe Leroy christophe.le...@c-s.fr
Date: Tue, 11 Aug 2015 12:11:03 +0200 (CEST)
We are not interested in interrupts for partially transmitted frames.
Unlike SCC and FCC, the FEC doesn't handle the I bit in buffer
descriptors, instead it defines two interrupt bits, TXB and TXF.
On Mon, Aug 10, 2015 at 02:52:28PM +1000, Anton Blanchard wrote:
Hi Bill, Segher,
I agree with Segher. We already know we have opportunities to do a
better job with shrink-wrapping (pushing this kind of useless
activity down past early exits), so having examples of code to look
at to
Sukadev Bhattiprolu [suka...@linux.vnet.ibm.com] wrote:
| CPUs support a large number of performance monitoring events (PMU events)
| and often these events are very specific to an architecture/model of the
| CPU. To use most of these PMU events with perf, we currently have to identify
| them by
On Tue, 28 Jul 2015 15:28:38 +1000
Daniel Axtens d...@axtens.net wrote:
Some aspects of initialisation are done only once in the lifetime of
an adapter: for example, allocating memory for the adapter,
allocating the adapter number, or setting up sysfs/debugfs files.
However, we may want to
On Tue, Aug 11, 2015 at 03:08:29PM -0500, Segher Boessenkool wrote:
[snip code]
After the prologue there are 46 insns executed before the epilogue.
Many of those are conditional branches (that are not executed); it is
all fall-through until it jumps to the tail (the few insns before
the
CXL accelerators are unfortunately not immune from failure. This patch
set enables them to particpate in the Extended Error Handling process.
This series starts with a number of preparatory patches:
- Patch 1 is cleanup: converting macros to static inlines.
- Patch 2 makes sure we don't touch
- MMIO pointer unmapping is guarded by a null pointer check.
However, iounmap doesn't null the pointer, just invalidate it.
Therefore, explicitly null the pointer after unmapping.
- afu_desc_mmio also needs to be unmapped.
- PCI regions are allocated in cxl_map_adapter_regs.
EEH (Enhanced Error Handling) allows a driver to recover from the
temporary failure of an attached PCI card. Enable basic CXL support
for EEH.
Signed-off-by: Daniel Axtens d...@axtens.net
---
drivers/misc/cxl/cxl.h | 1 +
drivers/misc/cxl/pci.c | 252
CONFIG_CXL_EEH is for CXL's EEH related code.
Other drivers can depend on or #ifdef on this symbol to access the API
for configuring PERST behaviour, allowing CXL to participate in the
EEH process.
Reviewed-by: Cyril Bur cyril...@gmail.com
Signed-off-by: Daniel Axtens d...@axtens.net
---
Provide a kernel API and a sysfs entry which allow a user to specify
that when a card is PERSTed, it's image will stay the same, allowing
it to participate in EEH.
cxl_reset is used to reflash the card. In that case, we cannot safely
assert that the image will not change. Therefore, disallow
Peter Zijlstra [pet...@infradead.org] wrote:
| On Sun, Jul 26, 2015 at 10:40:37PM -0700, Sukadev Bhattiprolu wrote:
| @@ -3743,7 +3762,13 @@ static u64 perf_event_aggregate(struct perf_event
*event, u64 *enabled,
| lockdep_assert_held(event-child_mutex);
|
|
On Wed, 2015-29-07 at 07:10:02 UTC, Anshuman Khandual wrote:
This patch adds some documentation to 'patch_slb_encoding' function
explaining about how it clears the existing immediate value in the
given instruction and inserts a new one there.
Signed-off-by: Anshuman Khandual
On 08/11/2015 05:50 PM, Ran Shalit wrote:
Hello,
I would like to ask if anyone tried remote debugging with
gdb/gdbserver on powerpc.
I've tried to cross-compile gdb for powerpc, but I get into troubles.
I am using the following compiler:
powerpc-buildroot-linux-gnu-gcc (Buildroot 2014.11)
We're about to make these more complex, so make them functions
first.
Signed-off-by: Daniel Axtens d...@axtens.net
---
drivers/misc/cxl/cxl.h | 51 ++
1 file changed, 35 insertions(+), 16 deletions(-)
diff --git a/drivers/misc/cxl/cxl.h
Some aspects of initialisation are done only once in the lifetime of
an adapter: for example, allocating memory for the adapter,
allocating the adapter number, or setting up sysfs/debugfs files.
However, we may want to be able to do some parts of the
initialisation multiple times: for example, in
On Fri, 2015-07-08 at 03:18:19 UTC, Daniel Axtens wrote:
Sparse identifies the following address space issues:
/scratch/dja/linux-capi/drivers/misc/cxl/vphb.c:125:17: warning: incorrect
type in assignment (different address spaces)
/scratch/dja/linux-capi/drivers/misc/cxl/vphb.c:125:17:
So after further offline conversations,
Yes, Cyril, you are right, I don't need the ifdef in my code. I just
need the symbol. I will amend my patches appropriately.
On Tue, 2015-08-11 at 21:22 +1000, Daniel Axtens wrote:
So I'm not super all over the putting all sorts of code inside
As with an adapter, some aspects of initialisation are done only once
in the lifetime of an AFU: for example, allocating memory, or setting
up sysfs/debugfs files.
However, we may want to be able to do some parts of the initialisation
multiple times: for example, in error recovery we want to be
Check if an IRQ is mapped before releasing it.
This will simplify future EEH code by allowing unconditional unmapping
of IRQs.
Acked-by: Cyril Bur cyril...@gmail.com
Signed-off-by: Daniel Axtens d...@axtens.net
---
drivers/misc/cxl/irq.c | 9 +
1 file changed, 9 insertions(+)
diff
On Wed, 2015-29-07 at 07:10:01 UTC, Anshuman Khandual wrote:
This patch adds the following six helper functions to help improve
modularization and readability of the code.
(1) slb_invalidate_all: Invalidates the entire SLB
(2) slb_invalidate: Invalidates SLB entries
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