Changelog : v1 -> v2:
v1:
https://lore.kernel.org/linuxppc-dev/20210821092419.167454-1-sri...@linux.vnet.ibm.com/t/#u``
[ patch 1: Updated to use DIV_ROUND_UP instead of max to handle more situations
]
[ patch 2: updated changelog to make it more generic powerpc issue ]
The 1st patch fixes a reg
Aneesh reported a crash with a fairly recent upstream kernel when
booting kernel whose commandline was appended with nr_cpus=2
1:mon> e
cpu 0x1: Vector: 300 (Data Access) at [c8a67bd0]
pc: c002557c: cpu_to_chip_id+0x3c/0x100
lr: c0058380: start_secondary+0x460/0xb00
lscpu() uses core_siblings to list the number of sockets in the
system. core_siblings is set using topology_core_cpumask.
While optimizing the powerpc bootup path, Commit 4ca234a9cbd7
("powerpc/smp: Stop updating cpu_core_mask"). it was found that
updating cpu_core_mask() ended up taking a lot of
Currently CACHE domain is not enabled on shared processor mode PowerVM
LPARS. On PowerVM systems, 'ibm,thread-group' device-tree property 2
under cpu-device-node indicates which all CPUs share L2-cache. However
'ibm,thread-group' device-tree property 2 is a relatively new property.
In absence of 'i
Changelog v2 -> v3:
v2:
https://lore.kernel.org/linuxppc-dev/20210821102535.169643-1-sri...@linux.vnet.ibm.com/t/#u
Add patch 1: to drop dbg and numa=debug (Suggested by Michael Ellerman)
Add patch 2: to convert printk to pr_xxx (Suggested by Michael Ellerman)
Use pr_warn instead of pr_deb
Convert the remaining printk to pr_xxx
One advantage would be all prints will now have prefix "numa:" from
pr_fmt().
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Nathan Lynch
Cc: Michael Ellerman
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Valentin Schneider
Cc: Gautham R Shenoy
Cc: Vincent Guittot
Cc:
Currently, a debug message gets printed every time an attempt to
add(remove) a CPU. However this is redundant if the CPU is already added
(removed) from the node.
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Nathan Lynch
Cc: Michael Ellerman
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Valentin Schneider
cpu_cpu_map holds all the CPUs in the DIE. However in PowerPC, when
onlining/offlining of CPUs, this mask doesn't get updated. This mask
is however updated when CPUs are added/removed. So when both
operations like online/offline of CPUs and adding/removing of CPUs are
done simultaneously, then cpu
Scheduler expects unique number of node distances to be available at
boot. It uses node distance to calculate this unique node distances.
On POWER, node distances for offline nodes is not available. However,
POWER already knows unique possible node distances. Fake the offline
node's distance_lookup
PowerPc supported numa=debug which is not documented. This option was
used to print early debug output. However something more flexible can be
achieved by using CONFIG_DYNAMIC_DEBUG.
Hence drop dbg (and numa=debug) in favour of pr_debug
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Nathan Lynch
Cc: Mich
This enables the liteeth network device for microwatt which will be
merged in v5.15.
It also turns on some options so the microwatt defconfig can be used to
boot a userspace with systemd.
Joel Stanley (3):
powerpc/microwatt: Add Ethernet to device tree
powerpc/configs/microwattt: Enable Litee
The liteeth network device is used in the Microwatt soc.
Signed-off-by: Joel Stanley
---
arch/powerpc/boot/dts/microwatt.dts | 12
1 file changed, 12 insertions(+)
diff --git a/arch/powerpc/boot/dts/microwatt.dts
b/arch/powerpc/boot/dts/microwatt.dts
index 974abbdda249..65b270a90f
Liteeth is the network device used by Microwatt.
Signed-off-by: Joel Stanley
---
arch/powerpc/configs/microwatt_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs/microwatt_defconfig
b/arch/powerpc/configs/microwatt_defconfig
index a08b739123da..2f8b1fec9a16 1006
When booting with systemd these options are required.
This increases the image by about 50KB, or 2%.
Signed-off-by: Joel Stanley
---
arch/powerpc/configs/microwatt_defconfig | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/configs/microwatt_defconfig
b/arch/
On Wed, 2021-08-25 at 14:04 -0500, Bjorn Helgaas wrote:
> On Mon, Aug 23, 2021 at 12:53:39PM +0200, Niklas Schnelle wrote:
> > On Fri, 2021-08-20 at 17:37 -0500, Bjorn Helgaas wrote:
> > > On Tue, Jul 20, 2021 at 05:01:45PM +0200, Niklas Schnelle wrote:
> > > > The helper function pci_dev_is_added(
Hi!
On Thu, Aug 26, 2021 at 01:26:14PM +1000, Nicholas Piggin wrote:
> Excerpts from Segher Boessenkool's message of August 19, 2021 1:06 am:
> > On Fri, Aug 13, 2021 at 04:08:13PM +1000, Nicholas Piggin wrote:
> >> This one possibly the branches end up in predictors, whereas conditional
> >> tra
Srikar Dronamraju writes:
> Scheduler expects unique number of node distances to be available at
> boot.
I think it needs "the number of unique node distances" ?
> It uses node distance to calculate this unique node distances.
It iterates over all pairs of nodes and records node_distance() for
On Thu, Aug 26, 2021 at 08:37:09AM +0200, Christophe Leroy wrote:
> Le 26/08/2021 à 05:21, Michael Ellerman a écrit :
> >This patch seems to fix it. Not sure if that's just papering over it
> >though.
> >
> >diff --git a/arch/powerpc/include/asm/bug.h
> >b/arch/powerpc/include/asm/bug.h
> >index
Excerpts from Segher Boessenkool's message of August 26, 2021 10:49 pm:
> Hi!
>
> On Thu, Aug 26, 2021 at 01:26:14PM +1000, Nicholas Piggin wrote:
>> Excerpts from Segher Boessenkool's message of August 19, 2021 1:06 am:
>> > On Fri, Aug 13, 2021 at 04:08:13PM +1000, Nicholas Piggin wrote:
>> >> T
On Thu, Aug 26, 2021 at 01:21:39PM +1000, Michael Ellerman wrote:
> So there seems to be some misunderstanding with clang, it doesn't like
> us passing an expression to the inline asm.
>
> AFAIK it is legal to pass expressions as inputs to inline asm, ie. it
> doesn't have to just be a variable na
Christophe Leroy writes:
> Le 26/08/2021 à 05:41, Michael Ellerman a écrit :
>> Christophe Leroy writes:
>>> There is no point in modifying MSR_LE bit on CPUs not supporting
>>> little endian.
>>
>> Isn't that an ABI break?
>
> Or an ABI fix ? I don't know.
It could break existing applications,
Christophe Leroy writes:
> Le 24/08/2021 à 16:40, Shuah Khan a écrit :
>> On 8/5/21 12:52 AM, cgel@gmail.com wrote:
>>> From: yong yiran
>>>
>>> 'inttypes.h' included in 'tm-poison.c' is duplicated.
>>> Remove all but the first include of inttypes.h from tm-poison.c.
>>>
>>> Reported-by: Zeal
Paul Moore writes:
> On Tue, Aug 24, 2021 at 1:11 PM Christophe Leroy
> wrote:
>> Le 24/08/2021 à 16:47, Paul Moore a écrit :
>> > On Tue, Aug 24, 2021 at 9:36 AM Christophe Leroy
>> > wrote:
>> >>
>> >> Commit e65e1fc2d24b ("[PATCH] syscall class hookup for all normal
>> >> targets") added gene
On Thu, Aug 26, 2021 at 11:57:52PM +1000, Nicholas Piggin wrote:
> Excerpts from Segher Boessenkool's message of August 26, 2021 10:49 pm:
> > On Thu, Aug 26, 2021 at 01:26:14PM +1000, Nicholas Piggin wrote:
> >> Excerpts from Segher Boessenkool's message of August 19, 2021 1:06 am:
> >> > On Fri,
Greeting's
Today's linux-next kernel WARN's while unbind of pci ssd flash device on
my powerpc box
# lspci -nn
001d:80:00.0 Non-Volatile memory controller [0108]: Seagate Technology
PLC Nytro Flash Storage [1bb1:0100]
001e:90:00.0 Non-Volatile memory controller [0108]: Seagate Technology
PLC
Christophe Leroy writes:
> Le 26/08/2021 à 05:21, Michael Ellerman a écrit :
>> Nathan Chancellor writes:
>>> On Tue, Apr 13, 2021 at 04:38:10PM +, Christophe Leroy wrote:
Using asm goto in __WARN_FLAGS() and WARN_ON() allows more
flexibility to GCC.
>> ...
>>>
>>> This patch as com
Le 26/08/2021 à 16:45, Michael Ellerman a écrit :
Christophe Leroy writes:
Le 26/08/2021 à 05:21, Michael Ellerman a écrit :
Nathan Chancellor writes:
On Tue, Apr 13, 2021 at 04:38:10PM +, Christophe Leroy wrote:
Using asm goto in __WARN_FLAGS() and WARN_ON() allows more
flexibility
Excerpts from Segher Boessenkool's message of August 27, 2021 12:37 am:
> On Thu, Aug 26, 2021 at 11:57:52PM +1000, Nicholas Piggin wrote:
>> Excerpts from Segher Boessenkool's message of August 26, 2021 10:49 pm:
>> > On Thu, Aug 26, 2021 at 01:26:14PM +1000, Nicholas Piggin wrote:
>> >> Excerpts
Paul Gortmaker writes:
> This is unchanged from the original wr_sbc-delete branch sent in January,
> other than to add the Acks from Scott in July, and update the baseline.
>
> Built with ppc64 defconfig and mpc85xx_cds_defconfig and mpc86xx_defconfig
> just to make sure I didn't fat finger anythi
Hi Nicholas,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on v5.14-rc7 next-20210826]
[cannot apply to scottwood/next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to
On Fri, Aug 27, 2021 at 01:04:36AM +1000, Nicholas Piggin wrote:
> Excerpts from Segher Boessenkool's message of August 27, 2021 12:37 am:
> >> No, they are all dispatched and issue to the BRU for execution. It's
> >> trivial to construct a test of a lot of not taken branches in a row
> >> and tim
Are you sure this is the very latest linux-next? This should hav been
fixed by:
"block: add back the bd_holder_dir reference in bd_link_disk_holder"
- On Aug 25, 2021, at 8:51 PM, Sean Christopherson sea...@google.com wrote:
> On Mon, Aug 23, 2021, Mathieu Desnoyers wrote:
>> [ re-send to Darren Hart ]
>>
>> - On Aug 23, 2021, at 11:18 AM, Mathieu Desnoyers
>> mathieu.desnoy...@efficios.com wrote:
>>
>> > - On Aug 20, 2021, at 6:
On Thu, Aug 26, 2021 at 01:21:39PM +1000, Michael Ellerman wrote:
> Nathan Chancellor writes:
> > On Tue, Apr 13, 2021 at 04:38:10PM +, Christophe Leroy wrote:
> >> Using asm goto in __WARN_FLAGS() and WARN_ON() allows more
> >> flexibility to GCC.
> ...
> >
> > This patch as commit 1e688dd2a3
On Thu, Aug 26, 2021 at 11:54:17AM -0700, Nathan Chancellor wrote:
> On Thu, Aug 26, 2021 at 01:21:39PM +1000, Michael Ellerman wrote:
> > Nathan Chancellor writes:
> > > On Tue, Apr 13, 2021 at 04:38:10PM +, Christophe Leroy wrote:
> > >> Using asm goto in __WARN_FLAGS() and WARN_ON() allows
On 8/26/21 8:57 AM, Michael Ellerman wrote:
Ganesh writes:
On 8/24/21 6:18 PM, Michael Ellerman wrote:
Ganesh Goudar writes:
Add test for real address or control memory address access
error handling, using NX-GZIP engine.
The error is injected by accessing the control memory address
using
On Thu, Aug 26, 2021 at 10:37 AM Michael Ellerman wrote:
> Paul Moore writes:
> > On Tue, Aug 24, 2021 at 1:11 PM Christophe Leroy
> > wrote:
> >> Le 24/08/2021 à 16:47, Paul Moore a écrit :
> >> > On Tue, Aug 24, 2021 at 9:36 AM Christophe Leroy
> >> > wrote:
> >> >>
> >> >> Commit e65e1fc2d24
Excerpts from Segher Boessenkool's message of August 27, 2021 1:30 am:
> On Fri, Aug 27, 2021 at 01:04:36AM +1000, Nicholas Piggin wrote:
>> Excerpts from Segher Boessenkool's message of August 27, 2021 12:37 am:
>> >> No, they are all dispatched and issue to the BRU for execution. It's
>> >> triv
Excerpts from kernel test robot's message of August 27, 2021 1:04 am:
> Hi Nicholas,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on powerpc/next]
> [also build test ERROR on v5.14-rc7 next-20210826]
> [cannot apply to scottwood/next]
>
On Thu, Aug 26, 2021, Mathieu Desnoyers wrote:
> - On Aug 25, 2021, at 8:51 PM, Sean Christopherson sea...@google.com
> wrote:
> >> >> + r = sched_setaffinity(0, sizeof(allowed_mask),
> >> >> &allowed_mask);
> >> >> + TEST_ASSERT(!r, "sched_setaffinity failed, errn
On Tue, Aug 24, 2021 at 10:26 PM Guenter Roeck wrote:
>
> Hi Claire,
>
> On Thu, Jun 24, 2021 at 11:55:24PM +0800, Claire Chang wrote:
> > Add the initialization function to create restricted DMA pools from
> > matching reserved-memory nodes.
> >
> > Regardless of swiotlb setting, the restricted D
Since e1a1ef84cd07, pages for TCE tables for KVM guests are allocated
only when needed. This allows skipping any update when clearing TCEs.
This works mostly fine as TCE updates are handled when MMU is enabled.
The realmode handlers fail with H_TOO_HARD when pages are not yet
allocated except when
On Thu, Jun 24, 2021 at 6:59 PM Claire Chang wrote:
>
> Add the initialization function to create restricted DMA pools from
> matching reserved-memory nodes.
>
> Regardless of swiotlb setting, the restricted DMA pool is preferred if
> available.
>
> The restricted DMA pools provide a basic level o
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