We need to check whether pte is present in follow_huge_addr and
properly return NULL if mapping is not present. Also use READ_ONCE
when dereferencing pte_t address.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hugetlbpage.c | 25 -
1 file changed, 16 insertions(+),
After this patch pmdp_* functions operate only on hugepage pte,
and not on regular pmd_t values pointing to page table.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/pgtable-ppc64.h | 4 ++
arch/powerpc/mm/pgtable_64.c | 76 +---
include/as
Serialize against find_linux_pte_or_hugepte which does lock-less
lookup in page tables with local interrupts disabled. For huge pages
it casts pmd_t to pte_t. Since format of pte_t is different from
pmd_t we want to prevent transit from pmd pointing to page table
to pmd pointing to huge page (and b
On Thu, 2015-05-07 at 12:46 +0530, Aneesh Kumar K.V wrote:
> We need to check whether pte is present in follow_huge_addr and
> properly return NULL if mapping is not present. Also use READ_ONCE
> when dereferencing pte_t address.
Do that need to go to stable as well ?
> Signed-off-by: Aneesh Kuma
On Thu, May 07, 2015 at 12:53:27PM +0530, Aneesh Kumar K.V wrote:
> After this patch pmdp_* functions operate only on hugepage pte,
> and not on regular pmd_t values pointing to page table.
>
> Signed-off-by: Aneesh Kumar K.V
> ---
> arch/powerpc/include/asm/pgtable-ppc64.h | 4 ++
> arch/power
This patchset adds support for FSP EPOW (Early Power Off Warning) and
DPO (Delayed Power Off) events support for PowerNV platform. EPOW events
are generated by SPCN/FSP due to various critical system conditions that
need system shutdown. Few examples of these conditions are high ambient
temperatur
This patch adds support for FSP EPOW (Early Power Off Warning) and
DPO (Delayed Power Off) events support for PowerNV platform. EPOW events
are generated by SPCN/FSP due to various critical system conditions that
need system shutdown. Few examples of these conditions are high ambient
temperature
OPAL exports plaform timeout values for various EPOW events under
EPOW device tree node. EPOW node contains sub nodes for each EPOW
class. Under each class platform timeout property files are located
for EPOW events under that class. Each file contains platform timeout
value for corresponding EPOW
Hi Preeti,
On 07/05/15 06:26, Preeti U Murthy wrote:
When a CPU has to enter an idle state where tick stops, it makes a call
to tick_broadcast_enter(). The call will fail if this CPU is the
broadcast CPU. Today, under such a circumstance, the arch cpuidle code
handles this CPU. This is not conv
On 05/05/2015 02:08 PM, Preeti U Murthy wrote:
> On 05/05/2015 11:36 AM, Shilpasri G Bhat wrote:
>> Hi Preeti,
>>
>> On 05/05/2015 09:21 AM, Preeti U Murthy wrote:
>>> Hi Shilpa,
>>>
>>> On 05/04/2015 02:24 PM, Shilpasri G Bhat wrote:
The On-Chip-Controller(OCC) can throttle cpu frequency by
Benjamin Herrenschmidt writes:
> On Thu, 2015-05-07 at 12:46 +0530, Aneesh Kumar K.V wrote:
>> We need to check whether pte is present in follow_huge_addr and
>> properly return NULL if mapping is not present. Also use READ_ONCE
>> when dereferencing pte_t address.
>
> Do that need to go to stabl
"Kirill A. Shutemov" writes:
> On Thu, May 07, 2015 at 12:53:27PM +0530, Aneesh Kumar K.V wrote:
>> After this patch pmdp_* functions operate only on hugepage pte,
>> and not on regular pmd_t values pointing to page table.
>>
>> Signed-off-by: Aneesh Kumar K.V
>> ---
>> arch/powerpc/include/as
Am 06.05.2015 um 18:42 schrieb Naveen N. Rao:
> On 2015/05/06 02:46PM, Christian Borntraeger wrote:
>> Am 06.05.2015 um 13:56 schrieb Naveen N. Rao:
>>> On powerpc, kvm tracks both the guest steal time as well as the time
>>> when guest was idle and this gets sent in to the guest through DTL. The
>
On 05/07/2015 04:05 PM, Shilpasri G Bhat wrote:
>
>
> On 05/05/2015 02:08 PM, Preeti U Murthy wrote:
>> On 05/05/2015 11:36 AM, Shilpasri G Bhat wrote:
>>> Hi Preeti,
>>>
>>> On 05/05/2015 09:21 AM, Preeti U Murthy wrote:
Hi Shilpa,
On 05/04/2015 02:24 PM, Shilpasri G Bhat wrote:
>
On 05/05/2015 02:11 PM, Preeti U Murthy wrote:
> On 05/05/2015 12:03 PM, Shilpasri G Bhat wrote:
>> Hi Preeti,
>>
>> On 05/05/2015 09:30 AM, Preeti U Murthy wrote:
>>> Hi Shilpa,
>>>
>>> On 05/04/2015 02:24 PM, Shilpasri G Bhat wrote:
Re-evaluate the chip's throttled state on recieving OCC_THR
From: York Sun
Extend err_addr to cover 64 bits for DDR errors.
Signed-off-by: York Sun
Change-Id: Idb112c4a106416a9cad9933c415e6f62de5cf07b
Reviewed-on: http://git.am.freescale.net:8181/553
Tested-by: Schmitt Richard-B43082
Reviewed-by: Fleming Andrew-AFLEMING
Tested-by: Fleming Andrew-AFLEM
From: York Sun
Remove mpc83xx and mpc85xx as dependency.
Signed-off-by: York Sun
Change-Id: I92ff2ecf38b00e48a713baf2443495f8a1468beb
Reviewed-on: http://git.am.freescale.net:8181/554
Reviewed-by: Schmitt Richard-B43082
Tested-by: Schmitt Richard-B43082
Reviewed-by: Fleming Andrew-AFLEMING
T
From: York Sun
Remove mpc83xx and mpc85xx as dependency.
Signed-off-by: York Sun
Signed-off-by: songwenbin
---
drivers/edac/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index cb59619..ad07d4f 100644
--- a/drivers/e
From: York Sun
Extend err_addr to cover 64 bits for DDR errors.
Signed-off-by: York Sun
Signed-off-by: songwenbin
---
drivers/edac/mpc85xx_edac.c | 10 +++---
drivers/edac/mpc85xx_edac.h | 1 +
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/edac/mpc85xx_edac.c b/d
We need to check whether pte is present in follow_huge_addr and
properly return NULL if mapping is not present. Also use READ_ONCE
when dereferencing pte_t address.
Signed-off-by: Aneesh Kumar K.V
---
Changes from V1:
--
* Fix build failures with some platform configs.
involves pmd_
What we really need is the ability to wait for other cpus to
finish local_irq_save/local_irq_restore region. We don't need to send
IPI to idle cpus in that case. Add a vairant of kick_all_cpus_sync
to do that. If idle_cpu_mask change during the call, we should be
ok because:
1) new cpus got added.
On Wed, May 6, 2015 at 11:12 PM, Herbert Xu wrote:
> On Wed, May 06, 2015 at 12:51:06PM -0400, Dan Streetman wrote:
>> Add crypto compression alg for 842 hardware compression and decompression.
>>
>> This crypto compression alg is named "nx842" to indicate it uses hardware
>> to perform the compre
Hi Scott,
Thanks for fast response, please see inline.
On 05/06/2015 11:22 PM, Scott Wood wrote:
On Tue, 2015-05-05 at 11:52 -0400, Oleksandr G Zhadan wrote:
New QorIQ p1020 based board support from Arcturus Networks Inc.
http://www.arcturusnetworks.com/products/ucp1020/
Signed-off-by: Michae
When a CPU has to enter an idle state where tick stops, it makes a call
to tick_broadcast_enter(). The call will fail if this CPU is the
broadcast CPU. Today, under such a circumstance, the arch cpuidle code
handles this CPU. This is not convincing because not only are we not
aware what the arch c
On 05/06/2015 10:16 PM, Alistair Popple wrote:
> Convert the opal ipmi driver to use the new irq interface for events.
>
> Signed-off-by: Alistair Popple
> Cc: Corey Minyard
> Cc: openipmi-develo...@lists.sourceforge.net
> ---
>
> Corey,
>
> If this looks ok can you please ack it? Michael Ellerma
When a CPU has to enter an idle state where tick stops, it makes a call
to tick_broadcast_enter(). The call will fail if this CPU is the
broadcast CPU. Today, under such a circumstance, the arch cpuidle code
handles this CPU. This is not convincing because not only are we not
aware what the arch c
IBM PowerPC processors starting at version P7+ contain a NX coprocessor
that provides various hw-accelerated functions, one of which is memory
compression to the IBM "842" compression format. This NX-842 coprocessor
is already supported on the pSeries platform, by the nx-842.c driver and
the crypt
Export the of_get_ibm_chip_id() function. This will be used by the
PowerNV NX-842 driver.
Signed-off-by: Dan Streetman
---
arch/powerpc/kernel/prom.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 308c5e1..ea2cea7 100644
--- a/a
Add the asm ICSWX and ICSWEPX opcodes. Add definitions for the
Coprocessor Request structures needed to use the icswx calls to
coprocessors. Add icswx() function to perform the ICSWX asm
using the provided Coprocessor Command Word value and
Coprocessor Request Block structure.
This is required f
Add 842-format software compression and decompression functions.
Update the MAINTAINERS 842 section to include the new files.
The 842 compression function can compress any input data into the 842
compression format. The 842 decompression function can decompress any
standard-format 842 compressed
Change the crypto 842 compression alg to use the software 842 compression
and decompression library. Add the crypto driver_name as "842-generic".
Remove the fallback to LZO compression.
Previously, this crypto compression alg attemped 842 compression using
PowerPC hardware, and fell back to LZO c
Move the entire NX-842 driver for the pSeries platform from the file
nx-842.c to nx-842-pseries.c. This is required by later patches that
add NX-842 support for the PowerNV platform.
This patch does not alter the content of the pSeries NX-842 driver at
all, it only changes the filename.
Signed-o
Add NX-842 frontend that allows using either the pSeries platform or
PowerNV platform driver (to be added by later patch) for the NX-842
hardware. Update the MAINTAINERS file to include the new filenames.
Update Kconfig files to clarify titles and descriptions, and correct
dependencies.
Signed-of
Add "constraints" for the NX-842 driver. The constraints are used to
indicate what the current NX-842 platform driver is capable of. The
constraints tell the NX-842 user what alignment, min and max length, and
length multiple each provided buffers should conform to. These are
required because th
Add driver for NX-842 hardware on the PowerNV platform.
This allows the use of the 842 compression hardware coprocessor on
the PowerNV platform.
Signed-off-by: Dan Streetman
---
drivers/crypto/nx/Kconfig | 10 +
drivers/crypto/nx/Makefile | 2 +
drivers/crypto/nx/nx-842-powe
Simplify the pSeries NX-842 driver: do not expect incoming buffers to be
exactly page-sized; do not break up input buffers to compress smaller
blocks; do not use any internal headers in the compressed data blocks;
remove the software decompression implementation; implement the pSeries
nx842_constra
Add crypto compression alg for 842 hardware compression and decompression,
using the alg name "842" and driver_name "842-nx".
This uses only the PowerPC coprocessor hardware for 842 compression. It
also uses the hardware for decompression, but if the hardware fails it will
fall back to the 842 so
On 05/07/2015 11:09 PM, Preeti U Murthy wrote:
> When a CPU has to enter an idle state where tick stops, it makes a call
> to tick_broadcast_enter(). The call will fail if this CPU is the
> broadcast CPU. Today, under such a circumstance, the arch cpuidle code
> handles this CPU. This is not convi
On Thu, 2015-05-07 at 12:31 -0400, Oleksandr G Zhadan wrote:
> Hi Scott,
>
> Thanks for fast response, please see inline.
>
> On 05/06/2015 11:22 PM, Scott Wood wrote:
> > On Tue, 2015-05-05 at 11:52 -0400, Oleksandr G Zhadan wrote:
> >> +-
> >> +
>
On 05/07/2015 02:18 PM, Scott Wood wrote:
On Thu, 2015-05-07 at 12:31 -0400, Oleksandr G Zhadan wrote:
Hi Scott,
Thanks for fast response, please see inline.
On 05/06/2015 11:22 PM, Scott Wood wrote:
On Tue, 2015-05-05 at 11:52 -0400, Oleksandr G Zhadan wrote:
+--
On Thursday, May 07, 2015 11:17:21 PM Preeti U Murthy wrote:
> When a CPU has to enter an idle state where tick stops, it makes a call
> to tick_broadcast_enter(). The call will fail if this CPU is the
> broadcast CPU. Today, under such a circumstance, the arch cpuidle code
> handles this CPU. Thi
On Thursday, May 07, 2015 05:49:22 PM Preeti U Murthy wrote:
> On 05/05/2015 02:11 PM, Preeti U Murthy wrote:
> > On 05/05/2015 12:03 PM, Shilpasri G Bhat wrote:
> >> Hi Preeti,
> >>
> >> On 05/05/2015 09:30 AM, Preeti U Murthy wrote:
> >>> Hi Shilpa,
> >>>
> >>> On 05/04/2015 02:24 PM, Shilpasri G
On Thu, 2015-05-07 at 15:29 -0400, Oleksandr G Zhadan wrote:
> On 05/07/2015 02:18 PM, Scott Wood wrote:
> > On Thu, 2015-05-07 at 12:31 -0400, Oleksandr G Zhadan wrote:
> diff --git a/arch/powerpc/configs/ucp1020_defconfig
> b/arch/powerpc/configs/ucp1020_defconfig
> new file mode
Hi Gavin,
[Please run "git log --oneline drivers/pci/setup-bus.c" and observe the
capitalization convention.]
On Fri, May 01, 2015 at 04:02:48PM +1000, Gavin Shan wrote:
> Currently, PowerPC PowerNV platform utilizes ppc_md.pcibios_fixup(),
> which is called for once after PCI probing and resourc
On Thu, May 07, 2015 at 12:46:21PM +0530, Aneesh Kumar K.V wrote:
> We need to check whether pte is present in follow_huge_addr and
> properly return NULL if mapping is not present. Also use READ_ONCE
> when dereferencing pte_t address.
>
> Signed-off-by: Aneesh Kumar K.V
Reviewed-by: David Gibs
To analyze the kvm exits with perf, we will need to map the exit codes
with the exit reasons. Such a mapping exists today in trace_book3s.h.
Currently its not exported to perf.
This patch moves these kvm exit reasons and their mapping from
"arch/powerpc/kvm/trace_book3s.h" to
"arch/powerpc/include
This patch adds an exit reason "RETURN_TO_HOST" for the return code
0x0.
Signed-off-by: Hemant Kumar
---
arch/powerpc/include/uapi/asm/trace_book3s.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/include/uapi/asm/trace_book3s.h
b/arch/powerpc/include/uapi/asm/trace_book3s.h
i
For perf to analyze the KVM events like hcalls, we need the
hypervisor calls and their codes to be exported through uapi.
This patch moves most of the pSeries hcall codes from
arch/powerpc/include/asm/hvcall.h to
arch/powerpc/include/uapi/asm/hcall_codes.h.
It also moves the mapping from
arch/pow
From: Srikar Dronamraju
perf kvm can be used to analyze guest exit reasons. This support already
exists in x86. Hence, porting it to powerpc.
- To trace KVM events :
perf kvm stat record
If many guests are running, we can track for a specific guest by using
--pid as in : perf kvm stat rec
powerpc provides hcall events that also provide insights into guest
behaviour. Enhance perf kvm to record and analyze hcall events.
- To trace hcall events :
perf kvm stat record
- To show the results :
perf kvm stat report --event=hcall
The result shows the number of hypervisor calls from
Hello Vipin,
On Thu, May 7, 2015 at 7:00 PM, Vipin K Parashar
wrote:
> This patch adds support for FSP EPOW (Early Power Off Warning) and
> DPO (Delayed Power Off) events support for PowerNV platform.
I reviewed this patch for the changes it made to the existing poweroff
code, you still need som
On Thu, May 07, 2015 at 11:06:06AM -0400, Dan Streetman wrote:
>
> The crypto 842-nx has (significant) code in it to handle any alignment
> and length input buffers, to match them to what the driver requires.
> Would it be better to move that into the crypto code, so that any
> crypto compression
On 05/08/2015 02:29 AM, Rafael J. Wysocki wrote:
> On Thursday, May 07, 2015 05:49:22 PM Preeti U Murthy wrote:
>> On 05/05/2015 02:11 PM, Preeti U Murthy wrote:
>>> On 05/05/2015 12:03 PM, Shilpasri G Bhat wrote:
Hi Preeti,
On 05/05/2015 09:30 AM, Preeti U Murthy wrote:
> Hi Shi
* Hemant Kumar wrote:
> # perf kvm stat report -p 60515
> Analyze events for pid(s) 60515, all VCPUs:
>
>VM-EXITSamples Samples% Time%Min Time Max
> Time Avg time
>
> H_DATA_STORAGE 500635.30% 0.13% 1.94us 49.46us
> 12.3
On 4 May 2015 at 14:24, Shilpasri G Bhat wrote:
> This patchset intends to add frequency throttle reporting mechanism
> to powernv-cpufreq driver when OCC throttles the frequency. OCC is an
> On-Chip-Controller which takes care of the power and thermal safety of
> the chip. The CPU frequency can b
* Hemant Kumar wrote:
>
> On 05/08/2015 09:58 AM, Ingo Molnar wrote:
> >* Hemant Kumar wrote:
> >
> >> # perf kvm stat report -p 60515
> >>Analyze events for pid(s) 60515, all VCPUs:
> >>
> >>VM-EXITSamples Samples% Time%Min Time Max
> >> Time Avg
On 05/08/2015 09:58 AM, Ingo Molnar wrote:
* Hemant Kumar wrote:
# perf kvm stat report -p 60515
Analyze events for pid(s) 60515, all VCPUs:
VM-EXITSamples Samples% Time%Min Time Max
Time Avg time
H_DATA_STORAGE 500635.30% 0.13%
On Tue, 2015-05-05 at 14:16 -0700, Andrew Morton wrote:
> On Tue, 5 May 2015 21:12:12 +1000 Michael Ellerman
> wrote:
>
> > Arch code can set a "dump stack arch description string" which is
> > displayed with oops output to describe the hardware platform.
> > +
> > + len = strnlen(dump_stack_
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