Winkle is a deep idle state supported in power8 chips. A core enters
winkle when all the threads of the core enter winkle. In this state
power supply to the entire chiplet i.e core, private L2 and private L3
is turned off. As a result it gives higher powersavings compared to
sleep.
But entering wi
Deep idle states like sleep and winkle are per core idle states. A core
enters these states only when all the threads enter either the
particular idle state or a deeper one. There are tasks like fastsleep
hardware bug workaround and hypervisor core state save which have to be
done only by the last
From: "Preeti U. Murthy"
The secondary threads should enter deep idle states so as to gain maximum
powersavings when the entire core is offline. To do so the offline path
must be made aware of the available deepest idle state. Hence probe the
device tree for the possible idle states in powernv co
From: Paul Mackerras
Currently, when going idle, we set the flag indicating that we are in
nap mode (paca->kvm_hstate.hwthread_state) and then execute the nap
(or sleep or rvwinkle) instruction, all with the MMU on. This is bad
for two reasons: (a) the architecture specifies that those instructi
Deep idle states like sleep and winkle are per core idle states. A core
enters these states only when all the threads enter either the particular
idle state or a deeper one. There are tasks like fastsleep hardware bug
workaround and hypervisor core state save which have to be done only by
the last
On Thu, Dec 04, 2014 at 04:40:35PM +1100, Michael Ellerman wrote:
>On Thu, 2014-04-12 at 03:24:37 UTC, Wei Yang wrote:
>> As in commit ac205b7b (PCI: make sriov work with hotplug remove) indicates,
>> when removing pci devices on a bus which has VFs, we need to remove them in
>> the reverse order.
On Wed, Dec 03, 2014 at 10:46:24PM -0600, Scott Wood wrote:
> Since only this first patch is a critical bugfix, and there's no
> arch/powerpc content in that patch, I think it should go via Mike's tree
> if it's to go in for 3.18 (if it's not already too late). Or, to keep
> things simple given th
On Wed, 2014-03-12 at 13:58:13 UTC, Greg Kurz wrote:
> This parameter basically leaves unwanted cpus executing in firmware or
> wherever they happen to be. This is a hack that shoudn't be used in a
> production environment.
>
> It also has an evil side effect on the split-core feature for powernv.
The patch exports two functions, which base on corresponding OPAL
APIs to retrieve PCI slot status. Those functions are going to be
used by PCI hotplug module in subsequent patches:
pnv_pci_get_power_status() opal_pci_get_power_status()
pnv_pci_get_presence_status() opal_pci_get_presenc
The series of patches depends on the OPAL firmware changes. If the firmware
doesn't have the changes, PCI hotplug slots won't be populated properly.
Other than that, no more problems found.
A new driver "powernv-php.ko" is introduced by the patchset to support
PCI hotplug for PowerNV platform. The
In hotplug case, function pcibios_add_pci_devices() is called to
rescan the specified PCI bus, which possibly doesn't have any child
devices. Access to the PCI bus's child device node will cause kernel
crash without exception. The patch adds conditions to skip scanning
the PCI bus, which doesn't ha
We might not get some PCI slot information (e.g. power status)
immediately by OPAL API. Instead, opal_pci_poll() need to be called
for the required information.
The patch introduces pnv_pci_poll(), which bases on original
ioda_eeh_poll(), to cover the above case
Signed-off-by: Gavin Shan
---
ar
The patch moves pcibios_find_pci_bus() to PPC kerenl directory so
that it can be reused by hotplug code for pSeries and PowerNV
platform at the same time.
Signed-off-by: Gavin Shan
Acked-by: Benjamin Herrenschmidt
---
arch/powerpc/kernel/pci-hotplug.c | 36 +
The patch intends to add standalone driver to support PCI hotplug
for PowerPC PowerNV platform, which runs on top of skiboot firmware.
The firmware identified hotpluggable slots and marked their device
tree node with proper "ibm,slot-pluggable" and "ibm,reset-by-firmware".
The driver simply scans d
For PowerPC PowerNV platform, running on top of skiboot, all PE
level reset should be routed to firmware, which exported PCI slot
reset capability with device-node property "ibm,reset-by-firmware".
Otherwise, the kernel still has to simulate hot reset on PCI bridge's
secondary bus. So the code does
The patch refactors ioda_eeh_reset() to eliminate unnecessary
nested if statements to improve code readability. Except printing
the PHB index in the error message when failing to clear PHB error
injection registers, no logic changed.
Signed-off-by: Gavin Shan
---
arch/powerpc/platforms/powernv/e
The patchset corresponds to skiboot changes, which manages PCI slots
in a unified way: OPAL APIs used to do slot reset, power management,
presence status retrival. The patchset shouldn't be merged before
the OPAL firmware counterpart is merged.
The kernel changes have been split into 2 parts: (A)
Function pnv_pci_reset_secondary_bus() is used to reset specified
PCI bus, which is leaded by root complex or PCI bridge. That means
the function shouldn't be called on PCI root bus and the patch
removes the logic for the case.
Also, some adapters may require fundamental reset to reload their
firm
On Thu, 2014-04-12 at 03:24:37 UTC, Wei Yang wrote:
> As in commit ac205b7b (PCI: make sriov work with hotplug remove) indicates,
> when removing pci devices on a bus which has VFs, we need to remove them in
> the reverse order.
>
> This patch applies this pattern on the hotplug remove path on pow
upatepp can get called for a nohpte fault when we find from the linux
page table that the translation was hashed before. In that case
we are sure that there is no existing translation, hence we could
avoid doing tlbie.
We could possibly race with a parallel fault filling the TLB. But
that should b
On Wed, 2014-03-12 at 11:03:15 UTC, Hari Bathini wrote:
> This patch extends pstore, a generic interface to platform dependent
> persistent storage, support for powernv platform to capture certain
> useful information, during dying moments. Such support is already in
> place for pseries platform.
> diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
> b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
> index 32f3f5f..cf70084 100644
> --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
> +++ b/Documentation/ABI/testing/sysfs-bus-
On Tue, Nov 25, 2014 at 09:38:42AM +1100, Gavin Shan wrote:
Please ignore this revision. v2 is on the way...
Thanks,
Gavin
>The patchset corresponds to skiboot changes, which manages PCI slots
>in a unified way: OPAL APIs used to do slot reset, power management,
>presence status retrival. The pa
On Wed, Nov 26, 2014 at 10:04:57AM +1100, Benjamin Herrenschmidt wrote:
>On Tue, 2014-11-25 at 09:49 +1100, Gavin Shan wrote:
>> When loading rpaphp.ko on a P7 box, I didn't see any PCI slots
>> created under /sys/bus/pci/slots as expected. It seems that the
>> RPA PCI slot stuff has been broken fo
On Wed, 2014-12-03 at 04:02 -0600, Emil Medve wrote:
> This supports SoC(s) with multiple BMan instances
>
> Signed-off-by: Emil Medve
> ---
> Documentation/devicetree/bindings/soc/fsl/bman.txt | 10 ++
> 1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/binding
On Thu, 2014-12-04 at 12:38 +0800, Kevin Hao wrote:
> On Wed, Dec 03, 2014 at 10:04:51PM -0600, Scott Wood wrote:
> > On Wed, 2014-12-03 at 16:53 +0800, Kevin Hao wrote:
> > > This reverts commit da788acb28386aa896224e784954bb73c99ff26c.
> > >
> > > That commit tried to fix the section mismatch wa
On Wed, Dec 03, 2014 at 10:04:51PM -0600, Scott Wood wrote:
> On Wed, 2014-12-03 at 16:53 +0800, Kevin Hao wrote:
> > This reverts commit da788acb28386aa896224e784954bb73c99ff26c.
> >
> > That commit tried to fix the section mismatch warning by moving the
> > ppc_corenet_clk_driver struct to init
On Wed, Dec 03, 2014 at 09:07:27PM -0600, Nathan Fontenot wrote:
> On 12/01/2014 10:26 PM, Greg KH wrote:
> > On Mon, Dec 01, 2014 at 09:41:03AM -0600, Nathan Fontenot wrote:
> >> On 11/26/2014 09:12 PM, Benjamin Herrenschmidt wrote:
> >>> Hi Greg,
> >>>
> >>> So Nathan is working on a patch series
On Wed, 2014-12-03 at 16:53 +0800, Kevin Hao wrote:
> This reverts commit da788acb28386aa896224e784954bb73c99ff26c.
>
> That commit tried to fix the section mismatch warning by moving the
> ppc_corenet_clk_driver struct to init section. This is definitely wrong
> because the kernel would free the
On Wed, 2014-12-03 at 20:42 +0100, Arnd Bergmann wrote:
> On Wednesday 03 December 2014 01:53:39 Emil Medve wrote:
> > On 12/02/2014 06:32 PM, Scott Wood wrote:
> > > On Mon, 2014-12-01 at 04:02 -0600, Emil Medve wrote:
> > >> diff --git a/arch/powerpc/boot/dts/t4240rdb.dts
> > >> b/arch/powerpc/b
Please ignore this one, I create an old version of the patch.
The new one is sent.
On Thu, Dec 04, 2014 at 11:04:32AM +0800, Wei Yang wrote:
>As in commit ac205b7b (PCI: make sriov work with hotplug remove) indicates,
>when removing pci devices on a bus which has VFs, we need to remove them in
>t
As in commit ac205b7b (PCI: make sriov work with hotplug remove) indicates,
when removing pci devices on a bus which has VFs, we need to remove them in
the reverse order.
This patch applies this pattern on the hotplug remove path on powerpc arch.
Signed-off-by: Wei Yang
Acked-by: Gavin Shan
---
On 12/01/2014 10:26 PM, Greg KH wrote:
> On Mon, Dec 01, 2014 at 09:41:03AM -0600, Nathan Fontenot wrote:
>> On 11/26/2014 09:12 PM, Benjamin Herrenschmidt wrote:
>>> Hi Greg,
>>>
>>> So Nathan is working on a patch series to cleanup and improve our
>>> "DLPAR" infrastructure which is basically our
On 12/01/2014 11:09 PM, Michael Ellerman wrote:
> On Mon, 2014-12-01 at 09:41 -0600, Nathan Fontenot wrote:
>> On 11/26/2014 09:12 PM, Benjamin Herrenschmidt wrote:
>>> Hi Greg,
>>>
>>> So Nathan is working on a patch series to cleanup and improve our
>>> "DLPAR" infrastructure which is basically o
As in commit ac205b7b (PCI: make sriov work with hotplug remove) indicates,
when removing pci devices on a bus which has VFs, we need to remove them in
the reverse order.
This patch applies this patten on the hotplug remove patch on powerpc arch.
Signed-off-by: Wei Yang
---
arch/powerpc/kernel/
On Thu, 2014-12-04 at 09:14 +1100, Gavin Shan wrote:
> On Wed, Dec 03, 2014 at 03:20:46PM +0100, Greg Kurz wrote:
> >On Wed, 26 Nov 2014 09:28:47 +1100
> >Gavin Shan wrote:
> >> On Tue, Nov 25, 2014 at 05:10:06PM +0100, Greg Kurz wrote:
> >> >This is what we get in dmesg when booting a pseries gue
On Tuesday, December 02, 2014 01:54:16 PM Tony Jones wrote:
> On 12/02/2014 01:27 PM, Richard Guy Briggs wrote:
> > Since both ppc and ppc64 have LE variants which are now reported by uname,
> > add that flag (__AUDIT_ARCH_LE) to syscall_get_arch() and add
> > AUDIT_ARCH_PPC*LE variants.
> >
> > W
On Wed, Dec 03, 2014 at 03:20:46PM +0100, Greg Kurz wrote:
>On Wed, 26 Nov 2014 09:28:47 +1100
>Gavin Shan wrote:
>> On Tue, Nov 25, 2014 at 05:10:06PM +0100, Greg Kurz wrote:
>> >This is what we get in dmesg when booting a pseries guest and
>> >the hypervisor doesn't provide EEH support.
>> >
>>
On Tue, 2014-12-02 at 17:03 -0600, Scott Wood wrote:
> On Tue, 2014-12-02 at 06:12 -0600, Bucur Madalin-Cristian-B32716 wrote:
> > > -Original Message-
> > > From: Wood Scott-B07421
> > > Sent: Tuesday, December 02, 2014 6:40 AM
> > >
> > > No need for the part. As we previously discussed
On Wed, 2014-12-03 at 15:52 +, Mel Gorman wrote:
>
> It's implied but can I assume it passed? If so, Ben and Paul, can I
> consider the series to be acked by you other than the minor comment
> updates?
Yes. Assuming it passed :-)
Acked-by: Benjamin Herrenschmidt
Cheers,
Ben.
Hello Arnd,
Thanks for taking the time to review this
On 12/03/2014 01:42 PM, Arnd Bergmann wrote:
> On Wednesday 03 December 2014 01:53:39 Emil Medve wrote:
>> On 12/02/2014 06:32 PM, Scott Wood wrote:
>>> On Mon, 2014-12-01 at 04:02 -0600, Emil Medve wrote:
diff --git a/arch/powerpc/boot/
On Wednesday 03 December 2014 01:53:39 Emil Medve wrote:
> On 12/02/2014 06:32 PM, Scott Wood wrote:
> > On Mon, 2014-12-01 at 04:02 -0600, Emil Medve wrote:
> >> diff --git a/arch/powerpc/boot/dts/t4240rdb.dts
> >> b/arch/powerpc/boot/dts/t4240rdb.dts
> >> index 53761d4..431bf4e 100644
> >> --- a
Mel Gorman writes:
> On Wed, Dec 03, 2014 at 08:53:37PM +0530, Aneesh Kumar K.V wrote:
>> Benjamin Herrenschmidt writes:
>>
>> > On Tue, 2014-12-02 at 12:57 +0530, Aneesh Kumar K.V wrote:
>> >> Now, hash_preload can possibly insert an hpte in hash page table even if
>> >> the access is not allo
On Wed, Dec 03, 2014 at 08:29:37PM +0530, Madhavan Srinivasan wrote:
> On Tuesday 02 December 2014 03:05 AM, Gabriel Paubert wrote:
> > On Thu, Nov 27, 2014 at 05:48:40PM +0530, Madhavan Srinivasan wrote:
> >> diff --git a/arch/powerpc/include/asm/exception-64s.h
> >> b/arch/powerpc/include/asm/ex
On Wed, Dec 03, 2014 at 08:53:37PM +0530, Aneesh Kumar K.V wrote:
> Benjamin Herrenschmidt writes:
>
> > On Tue, 2014-12-02 at 12:57 +0530, Aneesh Kumar K.V wrote:
> >> Now, hash_preload can possibly insert an hpte in hash page table even if
> >> the access is not allowed by the pte permissions.
Benjamin Herrenschmidt writes:
> On Tue, 2014-12-02 at 12:57 +0530, Aneesh Kumar K.V wrote:
>> Now, hash_preload can possibly insert an hpte in hash page table even if
>> the access is not allowed by the pte permissions. But i guess even that
>> is ok. because we will fault again, end-up calling
On Monday 01 December 2014 11:31 PM, Gabriel Paubert wrote:
> On Thu, Nov 27, 2014 at 05:48:41PM +0530, Madhavan Srinivasan wrote:
>> This patch re-write the current local_* functions to CR5 based one.
>> Base flow for each function is
>>
>> {
>> set cr5(eq)
>> load
>> ..
>> st
On Tuesday 02 December 2014 03:05 AM, Gabriel Paubert wrote:
> On Thu, Nov 27, 2014 at 05:48:40PM +0530, Madhavan Srinivasan wrote:
>> This patch create the infrastructure to handle the CR based
>> local_* atomic operations. Local atomic operations are fast
>> and highly reentrant per CPU counter
On Tuesday 02 December 2014 07:34 AM, Scott Wood wrote:
> On Thu, 2014-11-27 at 17:48 +0530, Madhavan Srinivasan wrote:
>> - I really appreciate feedback on the patchset.
>> - Kindly comment if I should try with any other benchmark or
>> workload to check the numbers.
>> - Also, kindly recomman
Michael Ellerman writes:
> On Tue, 2014-12-02 at 12:20 +0530, Aneesh Kumar K.V wrote:
>> upatepp get called for a nohpte fault, when we find from the linux
>> page table that the translation was hashed before. In that case
>> we are sure that there is no existing translation, hence we could
>> av
On Wed, 26 Nov 2014 09:28:47 +1100
Gavin Shan wrote:
> On Tue, Nov 25, 2014 at 05:10:06PM +0100, Greg Kurz wrote:
> >This is what we get in dmesg when booting a pseries guest and
> >the hypervisor doesn't provide EEH support.
> >
> >[0.166655] EEH functionality not supported
> >[0.166778]
This parameter basically leaves unwanted cpus executing in firmware or
wherever they happen to be. This is a hack that shoudn't be used in a
production environment.
It also has an evil side effect on the split-core feature for powernv. The
code needs all the cpus to participate to the split mode u
This patch extends pstore, a generic interface to platform dependent
persistent storage, support for powernv platform to capture certain
useful information, during dying moments. Such support is already in
place for pseries platform. This patch while adding pstore support
for powernv platform,
This patch adds a pstore type id to be used for opal specific
nvram partitions.
Signed-off-by: Hari Bathini
---
fs/pstore/inode.c |3 +++
include/linux/pstore.h |1 +
2 files changed, 4 insertions(+)
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index fafb7a0..e83bb93 100644
-
This patch series adds pstore support on powernv platform to
read different nvram partitions and write compressed data to
oops-log nvram partition. As pseries platform already has
pstore support, this series moves most of the common code
for pseries and powernv platforms to a common file. Tested
th
From: Kumar Gala
Change-Id: If643fa5ba0a903aef8f5056a2c90ebecc995b760
Signed-off-by: Kumar Gala
Signed-off-by: Geoff Thorpe
Signed-off-by: Hai-Ying Wang
Signed-off-by: Chunhe Lan
Signed-off-by: Poonam Aggrwal
[Emil Medve: Sync with the upstream binding]
Signed-off-by: Emil Medve
---
arch/p
From: Kumar Gala
Change-Id: If643fa5ba0a903aef8f5056a2c90ebecc995b760
Signed-off-by: Kumar Gala
Signed-off-by: Geoff Thorpe
Signed-off-by: Hai-Ying Wang
Signed-off-by: Chunhe Lan
Signed-off-by: Poonam Aggrwal
[Emil Medve: Sync with the upstream binding]
Signed-off-by: Emil Medve
---
arch/p
From: Kumar Gala
Change-Id: I16e63db731e55a3d60d4e147573c1af8718082d3
Signed-off-by: Kumar Gala
Signed-off-by: Geoff Thorpe
Signed-off-by: Hai-Ying Wang
[Emil Medve: Sync with the upstream binding]
Signed-off-by: Emil Medve
---
arch/powerpc/boot/dts/fsl/qoriq-qman1-portals.dtsi | 101 +++
From: Kumar Gala
Change-Id: I16e63db731e55a3d60d4e147573c1af8718082d3
Signed-off-by: Kumar Gala
Signed-off-by: Geoff Thorpe
Signed-off-by: Hai-Ying Wang
[Emil Medve: Sync with the upstream binding]
Signed-off-by: Emil Medve
---
arch/powerpc/boot/dts/fsl/qoriq-bman1-portals.dtsi | 90
This supports SoC(s) with multiple BMan instances
Signed-off-by: Emil Medve
---
Documentation/devicetree/bindings/soc/fsl/bman.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/fsl/bman.txt
b/Documentation/devicetree/bindings/soc/fsl/bman.
v4: Add binding for the portals phandle
Fix portals phandle
v3: Remove no-map
Adjust alloc-ranges for the 32-/36-bit SoC(s)
v2: Remove some reserved-memory properties
Split the patchset per IP block
Refined patch assignment
Emil Medve (2):
dt/binding
This supports SoC(s) with multiple QMan instances
Signed-off-by: Emil Medve
---
Documentation/devicetree/bindings/soc/fsl/qman.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/fsl/qman.txt
b/Documentation/devicetree/bindings/soc/fsl/qman.
In order to fix the following section mismatch warning:
WARNING: drivers/clk/built-in.o(.data+0xe4): Section mismatch in reference
from the variable ppc_corenet_clk_driver to the function
.init.text:ppc_corenet_clk_probe()
The variable ppc_corenet_clk_driver references
the function __init p
So the boards which has COMMON_CLK enabled don't have to
invoke this in its board specific file.
Signed-off-by: Kevin Hao
Acked-by: Scott Wood
Acked-by: Michael Turquette
---
v3: Add ack.
v2: A new patch in v2.
arch/powerpc/kernel/time.c| 5 +
arch/powerpc/platforms/
This reverts commit da788acb28386aa896224e784954bb73c99ff26c.
That commit tried to fix the section mismatch warning by moving the
ppc_corenet_clk_driver struct to init section. This is definitely wrong
because the kernel would free the memories occupied by this struct
after boot while this driver
I have done a boot test on p5040ds and mpc5121eads board.
v3:
- Rebase on next.
- CC stable for patch 1.
- Add Scott and Michael's ack.
v2:
- Revert the commit da788acb2838 first.
- Invoke of_clk_init() from a common place.
v1
This tries to fix a kernel panic introduced by commit da788ac
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