Ram Pai writes:
> helper function that checks if the read/write/execute is allowed
> on the pte.
>
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/include/asm/book3s/64/pgtable.h |4 +++
> arch/powerpc/include/asm/pkeys.h | 12 +
> arch/powerpc/mm/pkeys.c
The cacheflush prototypes currently use start and stop values and each
call requires typecasting the address to an unsigned long.
This patch changes the cacheflush prototypes to follow the x86 style of
using a base and size values, with base being a void pointer.
All callers of the cacheflush func
Ram Pai writes:
> Map the PTE protection key bits to the HPTE key protection bits,
> while creating HPTE entries.
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/include/asm/book3s/64/mmu-hash.h |5 +
> arch/powerpc/include/asm/pkeys.h | 1
The flush_dcache_phys_range function is no longer used in the kernel.
This patch removes and cleans up the function.
Signed-off-by: Matt Brown
---
arch/powerpc/include/asm/cacheflush.h | 1 -
arch/powerpc/kernel/misc_64.S | 38 ---
2 files changed, 39 del
Ram Pai writes:
> basic setup to initialize the pkey system. Only 64K kernel in HPT
> mode, enables the pkey system.
>
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/Kconfig | 16 ++
> arch/powerpc/include/asm/mmu_context.h |5 +++
> arch/powerpc/include/asm/pkeys
Ram Pai writes:
> replace redundant code in __hash_page_huge() with helper
> functions pte_get_hash_gslot() and pte_set_hash_slot()
>
Can you fold all the helper function usage into one patch ?
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/mm/hugetlbpage-hash64.c | 24 -
Ram Pai writes:
> replace redundant code in __hash_page_64K() with helper
> functions pte_get_hash_gslot() and pte_set_hash_slot()
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/mm/hash64_64k.c | 24
> 1 files changed, 4 insertions(+
Ram Pai writes:
> Introduce pte_get_hash_gslot()() which returns the slot number of the
> HPTE in the global hash table.
>
> This function will come in handy as we work towards re-arranging the
> PTE bits in the later patches.
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Ram Pai
> ---
>
Ram Pai writes:
> Introduce pte_set_hash_slot().It sets the (H_PAGE_F_SECOND|H_PAGE_F_GIX)
> bits at the appropriate location in the PTE of 4K PTE. For
> 64K PTE, it sets the bits in the second part of the PTE. Though
> the implementation for the former just needs the s
Ram Pai writes:
> The H_PAGE_F_SECOND,H_PAGE_F_GIX are not in the 64K main-PTE.
> capture these changes in the dump pte report.
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Ram Pai
> ---
> arch/powerpc/mm/dump_linuxpagetables.c |3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(
Ram Pai writes:
> Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6
> in the 64K backed HPTE pages. This along with the earlier
> patch will entirely free up the four bits from 64K PTE.
> The bit numbers are big-endian as defined in the ISA3.0
>
> This patch does the following chan
.
> /*
> @@ -116,8 +104,8 @@ int __hash_page_4K(unsigned long ea, unsigned long
> access, unsigned long vsid,
>* On hash insert failure we use old pte value and we don't
>* want slot information there if we have a insert failure.
>*/
> -
On 07/19/2017 12:29 PM, Nicholas Piggin wrote:
> Unrecovered MCE and HMI errors are sent through a special restart OPAL
> call to log the platform error. The downside is that they don't go
> through normal Linux crash paths, so they don't give much information
> to the Linux console.
>
> Change th
On Thu, Jul 20, 2017 at 12:02:23AM -0300, jos...@linux.vnet.ibm.com wrote:
> On Thu, Jul 20, 2017 at 09:42:50AM +1000, Benjamin Herrenschmidt wrote:
> > On Wed, 2017-07-19 at 16:46 -0300, jos...@linux.vnet.ibm.com wrote:
> > > Hello!
> > >
> > > We're not able to boot any KVM guest using upstream
* Nicholas Piggin [2017-07-20 11:53:22]:
> POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
>
> A solution is to set then clear MMCRA[60] after wake from state-loss
> idle.
>
> Signed-off-by: Nicholas Piggin
Reviewed-by: Vaidyanathan Srinivasan
> ---
> arch/powerpc/kern
Remove old, dead Kconfig option USB_LED. It is gone since
commit a335aaf3125c ("usb: misc: remove outdated USB LED driver").
Signed-off-by: Krzysztof Kozlowski
---
arch/powerpc/configs/c2k_defconfig| 1 -
arch/powerpc/configs/ppc6xx_defconfig | 1 -
2 files changed, 2 deletions(-)
diff --gi
Benjamin Herrenschmidt writes:
> There's a somewhat architectural issue with Radix MMU and KVM.
>
> When coming out of a guest with AIL (ie, MMU enabled), we start
> executing hypervisor code with the PID register still containing
> whatever the guest has been using.
>
> The problem is that the C
On Thursday 20 July 2017 07:23 AM, Nicholas Piggin wrote:
POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
A solution is to set then clear MMCRA[60] after wake from state-loss
idle.
Acked-by: Madhavan Srinivasan
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/
Rob Herring writes:
> On Wed, Jul 19, 2017 at 7:03 AM, Michael Ellerman wrote:
>> Rob Herring writes:
>>
>>> Now that we have a custom printf format specifier, convert users of
>>> full_name to use %pOF instead. This is preparation to remove storing
>>> of the full path string for each node.
>>>
On Thu, Jul 20, 2017 at 09:42:50AM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2017-07-19 at 16:46 -0300, jos...@linux.vnet.ibm.com wrote:
> > Hello!
> >
> > We're not able to boot any KVM guest using upstream kernel
> > (cb8c65ccff7f77d0285f1b126c72d37b2572c865 - 4.13.0-rc1+).
> > After reach
Benjamin Herrenschmidt writes:
> We do that because it's used by THP pmd collapsing, so use
> instead a dedicated flush function.
Reviewed-by: Aneesh Kumar K.V
>
> Signed-off-by: Benjamin Herrenschmidt
> ---
>
> v2. Add missing #ifdef CONFIG_TRANSPARENT_HUGEPAGE
> ---
> .../powerpc/include/as
Benjamin Herrenschmidt writes:
> At the moment we have to rather sub-optimal flushing behaviours:
>
> - flush_tlb_mm() will flush the PWC which is unnecessary (for example
>when doing a fork)
>
> - A large unmap will call flush_tlb_pwc() multiple times causing us
>to perform that fairly
Benjamin Herrenschmidt writes:
> The PWC flush only needs a single set call, just like the
> full (RIC=2) flush.
>
> This will allow us to get rid of the dedicated _tlbiel_pwc()
Reviewed-by: Aneesh Kumar K.V
>
> Signed-off-by: Benjamin Herrenschmidt
> ---
> arch/powerpc/mm/tlb-radix.c | 11 ++
POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
A solution is to set then clear MMCRA[60] after wake from state-loss
idle.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/idle_book3s.S | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/pow
There's a somewhat architectural issue with Radix MMU and KVM.
When coming out of a guest with AIL (ie, MMU enabled), we start
executing hypervisor code with the PID register still containing
whatever the guest has been using.
The problem is that the CPU can (and will) then start prefetching
or s
On Wed, 2017-07-19 at 16:46 -0300, jos...@linux.vnet.ibm.com wrote:
> Hello!
>
> We're not able to boot any KVM guest using upstream kernel
> (cb8c65ccff7f77d0285f1b126c72d37b2572c865 - 4.13.0-rc1+).
> After reaching the SLOF initial counting, the guest simply freezes:
Can you send our .config ?
Thanks for the report.
My Jenkins does a test boot of a KVM guest, so there must be something
different in our setups. Can you tell us all the details of your setup, eg.
Hardware, host kernel, qemu, guest kernel etc. Thanks.
cheers
On 20 July 2017 05:46:34 GMT+10:00, jos...@linux.vnet.ibm.com
On Sun, Jul 16, 2017 at 5:58 PM, Segher Boessenkool
wrote:
> On Sun, Jul 16, 2017 at 05:31:05PM -0700, Thomas Besemer wrote:
>> I'm trying to map some NOR flash in via DTS on a Yosemite
>> style 440EP board. I've tried a few different things, below
>> showing my latest attempt. During Kernel boot
Hello!
We're not able to boot any KVM guest using upstream kernel
(cb8c65ccff7f77d0285f1b126c72d37b2572c865 - 4.13.0-rc1+).
After reaching the SLOF initial counting, the guest simply freezes:
SLOF
**
QEMU Starting
Build Date =
On 07/18/2017 02:42 PM, Rob Herring wrote:
> Now that we have a custom printf format specifier, convert users of
> full_name to use %pOF instead. This is preparation to remove storing
> of the full path string for each node.
>
> Signed-off-by: Rob Herring
> Cc: Benjamin Herrenschmidt
> Cc: Paul
Adds support for clearing different sensor groups. OCC inband sensor
groups like CSM, Profiler, Job Scheduler can be cleared using this
driver. The min/max of all sensors belonging to these sensor groups
will be cleared.
Signed-off-by: Shilpasri G Bhat
---
Changes from V6:
- Removed a generic rea
This patch adds support to set power-shifting-ratio for CPU-GPU which
is used by OCC power capping algorithm.
Signed-off-by: Shilpasri G Bhat
---
arch/powerpc/include/asm/opal-api.h| 4 +-
arch/powerpc/include/asm/opal.h| 3 +
arch/powerpc/platforms/powernv/Makefi
Adds a generic powercap framework to change the system powercap
inband through OPAL-OCC command/response interface.
Signed-off-by: Shilpasri G Bhat
---
arch/powerpc/include/asm/opal-api.h| 5 +-
arch/powerpc/include/asm/opal.h| 4 +
arch/powerpc/platforms/powernv/
In P9, OCC (On-Chip-Controller) supports shared memory based
commad-response interface. Within the shared memory there is an OPAL
command buffer and OCC response buffer that can be used to send
inband commands to OCC. The following commands are supported:
1) Set system powercap
2) Set CPU-GPU powe
On Wed, Jul 19, 2017 at 03:42:48PM +0530, Viresh Kumar wrote:
> The policy->transition_latency field is used for multiple purposes
> today and its not straight forward at all. This is how it is used:
>
> A. Set the correct transition_latency value.
>
> B. Set it to CPUFREQ_ETERNAL because:
>
On Wed, Jul 19, 2017 at 7:03 AM, Michael Ellerman wrote:
> Rob Herring writes:
>
>> Now that we have a custom printf format specifier, convert users of
>> full_name to use %pOF instead. This is preparation to remove storing
>> of the full path string for each node.
>>
>> Signed-off-by: Rob Herrin
On Wednesday, July 19, 2017 03:42:40 PM Viresh Kumar wrote:
> Hi Rafael,
>
> This series tries to cleanup the code around transition-latency and its
> users. Some of the old legacy code, which may not make much sense now,
> is dropped as well. And some code consolidation is also done across
> gove
Hi Nicholas, Michael,
On Wed, Jul 19, 2017 at 10:07:05PM +1000, Michael Ellerman wrote:
> Nicholas Piggin writes:
> >> diff --git a/arch/powerpc/kernel/asm-offsets.c
> >> b/arch/powerpc/kernel/asm-offsets.c
> >> index a7b5af3..0262283 100644
> >> --- a/arch/powerpc/kernel/asm-offsets.c
> >> +++
James Morse writes:
> Hi Michael,
>
> On 17/07/17 11:17, Michael Ellerman wrote:
>> James Morse writes:
>>> compat_ptrace_request() lacks handlers for PTRACE_{G,S}ETSIGMASK,
>>> instead using those in ptrace_request(). The compat variant should
>>> read a compat_sigset_t from userspace instead o
Nicholas Piggin writes:
> On Wed, 19 Jul 2017 13:48:49 +0530
> "Gautham R. Shenoy" wrote:
>
>> From: "Gautham R. Shenoy"
>>
>> The stop4 idle state on POWER9 is a deep idle state which loses
>> hypervisor resources, but whose latency is low enough that it can be
>> exposed via cpuidle.
>>
>>
Rob Herring writes:
> Now that we have a custom printf format specifier, convert users of
> full_name to use %pOF instead. This is preparation to remove storing
> of the full path string for each node.
>
> Signed-off-by: Rob Herring
> Cc: Benjamin Herrenschmidt
> Cc: Paul Mackerras
> Cc: Micha
Hi Daniel many thanks for your patch
> -Original Message-
> From: Daniel Axtens [mailto:d...@axtens.net]
> Sent: 19 July 2017 03:15
> To: linux-...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; linux-
> arm-ker...@lists.infradead.org
> Cc: b...@kernel.crashing.org; Liuxinliang (Matthew L
On 07/18/2017 11:43 PM, Rob Herring wrote:
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: Rob Herring
Cc: Scott Wood
Cc: Qiang Zhao
Cc: Matthias Br
The policy->transition_latency field is used for multiple purposes
today and its not straight forward at all. This is how it is used:
A. Set the correct transition_latency value.
B. Set it to CPUFREQ_ETERNAL because:
1. We don't want automatic dynamic switching (with
ondemand/conservativ
Hi Rafael,
This series tries to cleanup the code around transition-latency and its
users. Some of the old legacy code, which may not make much sense now,
is dropped as well. And some code consolidation is also done across
governors.
Based of: v4.13-rc1
Tested on: ARM64 Hikey board.
I have pushed
On Wed, 19 Jul 2017 13:48:50 +0530
"Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> Currently we use the stop-api provided by the firmware to program the
> SLW engine to restore the values of hypervisor resources that get lost
> on deeper idle states (such as winkle). Since the deep s
On Wed, 19 Jul 2017 13:48:49 +0530
"Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> The stop4 idle state on POWER9 is a deep idle state which loses
> hypervisor resources, but whose latency is low enough that it can be
> exposed via cpuidle.
>
> Until now, the deep idle states which
(+ Laszlo)
On 19 July 2017 at 02:28, Daniel Axtens wrote:
> Hi all,
>
> Previously I posted a patch that provided a quirk for a hibmc card
> behind a particular Huawei bridge that allowed it to be marked as the
> default device in the VGA arbiter.[0] This lead to some discussion.[1]
> It was broa
From: "Gautham R. Shenoy"
The stop4 idle state on POWER9 is a deep idle state which loses
hypervisor resources, but whose latency is low enough that it can be
exposed via cpuidle.
Until now, the deep idle states which lose hypervisor resources (eg:
winkle) were only exposed via CPU-Hotplug. Hen
From: "Gautham R. Shenoy"
Currently we use the stop-api provided by the firmware to program the
SLW engine to restore the values of hypervisor resources that get lost
on deeper idle states (such as winkle). Since the deep states were
only used for CPU-Hotplug on POWER8 systems, we would program t
From: "Gautham R. Shenoy"
Hi,
This is the second iteration of the patchset to enable exploitation of
stop4 idle state on POWER9 via cpuidle.
The earlier version can be found here :
https://lkml.org/lkml/2017/7/18/691
The change from the first version is to the second patch titled "
powernv/pow
On Wed, Jul 19, 2017 at 12:15:16PM +1000, Daniel Axtens wrote:
> The VGA arbiter only marks a device as default if it can decode
> legacy I/O and memory ranges. This is often not the case on arm64,
> which doesn't use the legacy ranges.
>
> Enable the VGA arbiter to mark the first enabled VGA card
On Tue, Jul 18, 2017 at 11:43 PM, Rob Herring wrote:
> Now that we have a custom printf format specifier, convert users of
> full_name to use %pOF instead. This is preparation to remove storing
> of the full path string for each node.
>
> Signed-off-by: Rob Herring
Reviewed-by: Geert Uytterhoeve
On 07/18/2017 11:42 PM, Rob Herring wrote:
> Now that we have a custom printf format specifier, convert users of
> full_name to use %pOF instead. This is preparation to remove storing
> of the full path string for each node.
>
> Signed-off-by: Rob Herring
> Cc: "Rafael J. Wysocki"
> Cc: Viresh
On Wed, 19 Jul 2017 16:59:10 +1000
Nicholas Piggin wrote:
> Change this by providing a special crash function which does some of
> the console flushing from the panic() path before calling firmware to
> reboot.
Oops, I changed the changelog but not the patch subject. Should
be something like "fl
Use nmi_enter similarly to system reset interrupts. This uses NMI
printk NMI buffers and turns off various debugging facilities that
helps avoid tripping on ourselves or other CPUs.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/traps.c | 9 ++---
1 file changed, 6 insertions(+), 3 d
There are quite a few machine check exceptions that can be caused by
kernel bugs. To make debugging easier, use the kernel crash path in
cases of synchronous machine checks that occur in kernel mode, if that
would not result in the machine going straight to panic or crash dump.
There is a downside
Unrecovered MCE and HMI errors are sent through a special restart OPAL
call to log the platform error. The downside is that they don't go
through normal Linux crash paths, so they don't give much information
to the Linux console.
Change this by providing a special crash function which does some of
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