Paul Mackerras writes:
> On pseries, performance is about 2.4% worse without new hcalls, but
> that is less than 1 standard deviation. With new hcalls, performance
> is 0.95% worse, only a third of a standard deviation. I think we need
> to do more measurements to try to get a more accurate pict
On powerpc32, patch_instruction() is called by apply_feature_fixups()
which is called from early_init()
There is the following note in front of early_init():
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRR
Le 21/11/2017 à 03:28, Balbir Singh a écrit :
On Sun, Nov 19, 2017 at 1:36 AM, LEROY Christophe
wrote:
Meelis Roos a écrit :
How early does it hang ? Any oops or trace ?
Very early - instead oif kernel emssages, I see some repeated gibberish
of some characteers, and the background turns
On 21.11.2017 02:14, Nicolin Chen wrote:
> On Tue, Nov 21, 2017 at 01:32:09AM +0100, Maciej S. Szmigiero wrote:
>> On 21.11.2017 01:00, Nicolin Chen wrote:
>>> On Mon, Nov 20, 2017 at 11:13:45PM +0100, Maciej S. Szmigiero wrote:
>> (..)
We need to make sure, however, that only proper channel s
On 21.11.2017 02:52, Nicolin Chen wrote:
> On Mon, Nov 20, 2017 at 11:16:07PM +0100, Maciej S. Szmigiero wrote:
(..)
>> static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,
>> @@ -1287,16 +1295,18 @@ static unsigned short fsl_ssi_ac97_read(struct
>> snd_ac97 *ac97,
>> {
>> struct
Hi Cyril,
Thanks for adding the checks!
On 21-11-2017 05:17, Cyril Bur wrote:
> Signed-off-by: Cyril Bur
Signed-off-by: Gustavo Romero
Cheers,
Gustavo
> ---
> .../testing/selftests/powerpc/tm/tm-unavailable.c | 43
> +-
> 1 file changed, 34 insertions(+), 9 deletions(-
Hi Cyril,
On 21-11-2017 05:17, Cyril Bur wrote:
> Currently the tm-unavailable test spins for a fixed amount of time in
> an attempt to ensure the FPU/VMX/VSX facilities are off. This value was
> experimentally tested to be long enough.
>
> Problems may arise if kernel heuristics were to change.
From: Boqun Feng
Call the rseq_handle_notify_resume() function on return to userspace if
TIF_NOTIFY_RESUME thread flag is set.
Increment the event counter and perform fixup on the pre-signal when a
signal is delivered on top of a restartable sequence critical section.
Signed-off-by: Boqun Feng
From: Boqun Feng
Wire up the rseq system call on powerpc.
This provides an ABI improving the speed of a user-space getcpu
operation on powerpc by skipping the getcpu system call on the fast
path, as well as improving the speed of user-space operations on per-cpu
data compared to using load-reser
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Boqun Feng
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerpc/include/asm/unistd.h | 2 +-
arc
Allow PowerPC to skip the full memory barrier in switch_mm(), and
only issue the barrier when scheduling into a task belonging to a
process that has registered to use expedited private.
Threads targeting the same VM but which belong to different thread
groups is a tricky case. It has a few consequ
On powerpc32, patch_instruction() is called by apply_feature_fixups()
which is called from early_init()
There is the following note in front of early_init():
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRR
On powerpc32, patch_instruction() is called by apply_feature_fixups()
which is called from early_init()
There is the following note in front of early_init():
* Note that the kernel may be running at an address which is different
* from the address that it was linked at, so we must use RELOC/PTRR
On Thu, 2017-11-16 at 20:46 -0500, Pavel Tatashin wrote:
> There is no need to have ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT,
> as all the page initialization code is in common code.
>
> Also, there is no need to depend on MEMORY_HOTPLUG, as initialization
> code
> does not really use hotplug memor
On Wed, 2017-09-06 at 19:19 +, Leo Li wrote:
> > -Original Message-
> > From: York Sun
> > Sent: Wednesday, September 06, 2017 10:34 AM
> > To: Leo Li
> > Cc: Joakim Tjernlund ; linuxppc-dev linuxppc-
> > dev
> > Subject: Re: [PATCH] fsl_pci: Correct fsl_pci_mcheck_exception
> >
> >
> On powerpc32, patch_instruction() is called by apply_feature_fixups()
> which is called from early_init()
>
> There is the following note in front of early_init():
> * Note that the kernel may be running at an address which is different
> * from the address that it was linked at, so we must u
Hello ,
I have been working on trying to get a newer kernel and Ubuntu version running
on the PS3 within otherOS on a PS3 slim. I managed to find a git repository
made by Geoff that is still being updated as of a few days ago. That can be
found here -
https://kernel.googlesource.com/pub/...eof
On Tue, 2017-11-21 at 19:28 +0200, Meelis Roos wrote:
> For wider powerpc audience: this warning-like INFO bit is present
> independently of theis patch. Is it dangerous for some configuration?
>
> INFO: Uncompressed kernel (size 0x5d6c54) overlaps the address of the
> wrapper(0x40)
> INFO:
On Wed, Nov 22, 2017 at 1:28 AM, Christophe Leroy
wrote:
> On powerpc32, patch_instruction() is called by apply_feature_fixups()
> which is called from early_init()
>
> There is the following note in front of early_init():
> * Note that the kernel may be running at an address which is different
>
On Tue, 2017-11-21 at 11:31 -0200, Gustavo Romero wrote:
> Hi Cyril,
>
> On 21-11-2017 05:17, Cyril Bur wrote:
> > Currently the tm-unavailable test spins for a fixed amount of time in
> > an attempt to ensure the FPU/VMX/VSX facilities are off. This value was
> > experimentally tested to be long
We need to make sure that only proper channel slots (in SACCST register)
are enabled at playback start time since some AC'97 CODECs (like VT1613 on
UDOO board) were observed requesting via SLOTREQ spurious ones just after
an AC'97 link is started but before the CODEC is configured by its driver.
Wh
In AC'97 mode we configure and start SSI RX / TX on probe path via
a call to _fsl_ssi_set_dai_fmt() function.
We don't need to call this function again later and in fact don't want to
do it since this function temporarily sets STCR, SRCR and SCR to some
intermediate values.
Signed-off-by: Maciej S
Madhavan Srinivasan writes:
> diff --git a/arch/powerpc/platforms/powernv/opal-imc.c
> b/arch/powerpc/platforms/powernv/opal-imc.c
> index b150f4deaccf..4764e6932cb7 100644
> --- a/arch/powerpc/platforms/powernv/opal-imc.c
> +++ b/arch/powerpc/platforms/powernv/opal-imc.c
> @@ -153,6 +153,22 @@
On 23/10/17 19:07, Alexey Kardashevskiy wrote:
> The pcidev value stored in pci_dn is only used for NPU/NPU2
> initialization. We can easily drop the cached pointer and
> use an ancient helper - pci_get_domain_bus_and_slot() instead in order
> to reduce complexity.
Ping?
>
> Signed-off-by: Ale
96df226 "KVM: PPC: Book3S PR: Preserve storage control bits" added WIMG
bits preserving but it missed 2 special cases:
- a magic page in kvmppc_mmu_book3s_64_xlate() and
- guest real mode in kvmppc_handle_pagefault().
For these ptes WIMG were 0 and pHyp failed on these causing a guest to
stop in t
On Mon, 2017-10-23 at 19:07 +1100, Alexey Kardashevskiy wrote:
> The pcidev value stored in pci_dn is only used for NPU/NPU2
> initialization. We can easily drop the cached pointer and
> use an ancient helper - pci_get_domain_bus_and_slot() instead in
> order
> to reduce complexity.
>
> Signed-off
"pmu_count" in opal_imc_counters_probe() is intended to hold
the number of successful nest imc pmu registerations. But
current code also counts other imc units like core_imc and
thread_imc. Patch add a check to count only nest imc pmus.
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/platfor
IMC_MAX_PMU is used for static storage (per_nest_pmu_arr) which holds
nest pmu information. Current value for the macro is 32 based on
the initial number of nest pmu units supported by the nest microcode.
But going forward, microcode could support more nest units. Instead
of static storage, patch t
On Wednesday 22 November 2017 06:53 AM, Michael Ellerman wrote:
Madhavan Srinivasan writes:
diff --git a/arch/powerpc/platforms/powernv/opal-imc.c
b/arch/powerpc/platforms/powernv/opal-imc.c
index b150f4deaccf..4764e6932cb7 100644
--- a/arch/powerpc/platforms/powernv/opal-imc.c
+++ b/arch/p
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.
Use pci_get_domain_bus_and_slot() with a domain number of 0 where we can't
extract the domain number. Other places, use the
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.
Use pci_get_domain_bus_and_slot() with a domain number of 0 where we can't
extract the domain number. Other places, use the
During an eeh a kernel-oops is reported if no vPHB to allocated to the
AFU. This happens as during AFU init, an error in creation of vPHB is
a non-fatal error. Hence afu->phb should always be checked for NULL
before iterating over it for the virtual AFU pci devices.
This patch fixes the kenel-oops
This statement causes some not very useful messages to always
be printed on the serial port at boot, even on quiet boots.
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/kernel/setup_64.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/ke
This message isn't terribly useful.
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/platforms/powernv/opal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/opal.c
b/arch/powerpc/platforms/powernv/opal.c
index 65c79ecf5a4d..464dccebf3df
On 22/11/17 16:46, Vaibhav Jain wrote:
During an eeh a kernel-oops is reported if no vPHB to allocated to the
AFU. This happens as during AFU init, an error in creation of vPHB is
a non-fatal error. Hence afu->phb should always be checked for NULL
before iterating over it for the virtual AFU pci
Le 22/11/2017 à 00:07, Balbir Singh a écrit :
On Wed, Nov 22, 2017 at 1:28 AM, Christophe Leroy
wrote:
On powerpc32, patch_instruction() is called by apply_feature_fixups()
which is called from early_init()
There is the following note in front of early_init():
* Note that the kernel may be
Andrew Donnellan writes:
> Looks to me like we might need the same fix in
> cxl_vphb_error_detected()? It's called twice in
> cxl_pci_error_detected(), and in only one of those cases is it
> surrounded by an afu->phb NULL check.
Thanks for catching this. Will send a v2 with update.
--
Vaibh
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