On Sat, Aug 18, 2018 at 4:26 PM Rasmus Villemoes
wrote:
>
> There are quite a few callers of seq_open that could be simplified by
> setting the ->private member via the seq_open call instead of fetching
> file->private_data afterwards.
>
I like this series,
Reviewed-by: Andy Shevchenko
P.S. ...
This patch series includes some improvement to Machine check handler
for pSeries. First 3 patches from v7 revision are already in powerpc next.
Posting rest of the patches with review comments. This patch series drops
the sysctl knob patch that was proposed in v7. The SLB recovery code now
uses flu
From: Mahesh Salgaonkar
On pseries, the machine check error details are part of RTAS extended
event log passed under Machine check exception section. This patch adds
the definition of rtas MCE event section and related helper
functions.
Signed-off-by: Mahesh Salgaonkar
---
Change in V8:
- Move
From: Mahesh Salgaonkar
On pseries, as of today system crashes if we get a machine check
exceptions due to SLB errors. These are soft errors and can be fixed by
flushing the SLBs so the kernel can continue to function instead of
system crash. We do this in real mode before turning on MMU. Otherwi
From: Mahesh Salgaonkar
Extract the MCE error details from RTAS extended log and display it to
console.
With this patch you should now see mce logs like below:
[ 142.371818] Severe Machine check interrupt [Recovered]
[ 142.371822] NIP [dca301b8]: init_module+0x1b8/0x338 [bork_kernel
From: Mahesh Salgaonkar
If we get a machine check exceptions due to SLB errors then dump the
current SLB contents which will be very much helpful in debugging the
root cause of SLB errors. Introduce an exclusive buffer per cpu to hold
faulty SLB entries. In real mode mce handler saves the old SLB
From: Mahesh Salgaonkar
Now that other platforms also implements real mode mce handler,
lets consolidate the code by sharing existing powernv machine check
early code. Rename machine_check_powernv_early to
machine_check_common_early and reuse the code.
Signed-off-by: Mahesh Salgaonkar
---
arch
Ever since the PCI hotplug core was introduced in 2002, drivers had to
allocate and register a struct hotplug_slot_info for every slot:
https://git.kernel.org/tglx/history/c/a8a2069f432c
Apparently the idea was that drivers furnish the hotplug core with an
up-to-date card presence status, power st
Hotplug drivers cannot declare their hotplug_slot_ops const, making them
attractive targets for attackers, because upon registration of a hotplug
slot, __pci_hp_initialize() writes to the "owner" and "mod_name" members
in that struct.
Fix by moving these members to struct hotplug_slot and constify
When the PCI hotplug core and its first user, cpqphp, were introduced in
February 2002 with historic commit a8a2069f432c, cpqphp allocated a slot
struct for its internal use plus a hotplug_slot struct to be registered
with the hotplug core and linked the two with pointers:
https://git.kernel.org/tg
Here's PCI hotplug material I've prepared for v4.20:
Patches [1/9] to [8/9] reduce the code by 488 lines. There should be no
loss of functionality and no new features, just less and simpler code.
Patch [9/9] collects TODOs for hotplug drivers to spur contributions.
I've assumed that my patch "
Add a IRQ init routine for the Nemo board which inits and attatches
the i8259 found in the SB600, and a cascade routine to dispatch the
interrupts.
Signed-off-by: Darren Stevens
---
diff --git a/arch/powerpc/platforms/pasemi/setup.c
b/arch/powerpc/platforms/pasemi/setup.c
index 9a6eb04..fad5280
The A-Eon Amigaone X1000's Nemo motherboard has an AMD SB600
connected to one of the PCI-e root ports on its PaSemi
Pwrficient 1628M SoC. Normally the SB600 southbridge would be
connected to a hidden PCI-e port on the system's northbridge,
and as a result doesn't fully comply with the PCI-e spec.
Add routines for Nemo specific devices to init at boot time, these
being board level power-off and SB600's rtc.
Also add a run time variable to prevent these being activated
if we boot on a reference board.
Signed-off-by: Darren Stevens
---
Changes made:
v2: Merged some #ifdef blocksd
The previous 3 commits added support code for the Nemo motherbard
as used in the Amigaone X1000, now wire them up so the board can
be detected and initalised at boot time.
Signed-off-by: Darren Stevens
---
Changes made:
v2: Changed init code to be empty when NEMO=n rather than using
#i
Disable new features from recent releases, and clean out some other
unused options:
- Enable EXPERT, so we can disable some things
- Disable non-powerpc BPF decoders
- Disable TASKSTATS
- Disable unused syscalls
- Set more things to be modules
- Turn off unused network vendors
Signed-off-by
From: "Gautham R. Shenoy"
Hi,
This is the seventh iteration of the patchset to add support for
big-core on POWER9. This patch also optimizes the task placement on
such big-core systems.
The previous versions can be found here:
v6: https://lkml.org/lkml/2018/8/9/119
v5: https://lkml.org/lkml/20
From: "Gautham R. Shenoy"
On IBM POWER9, the device tree exposes a property array identifed by
"ibm,thread-groups" which will indicate which groups of threads share
a particular set of resources.
As of today we only have one form of grouping identifying the group of
threads in the core that shar
From: "Gautham R. Shenoy"
Each of the SMT4 cores forming a big-core are more or less independent
units. Thus when multiple tasks are scheduled to run on the fused
core, we get the best performance when the tasks are spread across the
pair of SMT4 cores.
This patch achieves this by setting the SM
Le 17/08/2018 à 17:12, Christophe LEROY a écrit :
Le 04/12/2017 à 03:19, Aneesh Kumar K.V a écrit :
pte_access_premitted get called in get_user_pages_fast path. If we
have marked
the pte PROT_NONE, we should not allow a read access on the address. With
the current implementation we are not
Le 04/12/2017 à 03:19, Aneesh Kumar K.V a écrit :
No functional change in this patch. This update gup_hugepte to use the
helper. This will help later when we add memory keys.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hugetlbpage.c | 4 +---
1 file changed, 1 insertion(+), 3 dele
Hi Michal,
This patchset got acked, tested and reviewed by quite a few people, and
it has been suggested
that it should be included in -mm tree: could you tell me if something
else needs to be done for
its inclusion ?
Thanks for your time,
Alex
On 08/06/2018 07:57 PM, Alexandre Ghiti wrote
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