On Mon, Jul 12, 2021 at 01:00:10PM +1000, Nicholas Piggin wrote:
> Excerpts from Bharata B Rao's message of July 8, 2021 3:29 pm:
> > The atom_size used by percpu allocator on powerpc is currently
> > determined by mmu_linear_psize which is initialized to 4K and
> > mmu_linear_psize is modified onl
On 7/2/21 5:57 AM, Nicholas Piggin wrote:
Excerpts from Madhavan Srinivasan's message of July 1, 2021 11:17 pm:
On 6/22/21 4:27 PM, Nicholas Piggin wrote:
KVM PMU management code looks for particular frozen/disabled bits in
the PMU registers so it knows whether it must clear them when coming
Excerpts from Bharata B Rao's message of July 8, 2021 3:29 pm:
> The atom_size used by percpu allocator on powerpc is currently
> determined by mmu_linear_psize which is initialized to 4K and
> mmu_linear_psize is modified only by hash. Till now for radix
> the atom_size was defaulting to PAGE_SIZE
Excerpts from Athira Rajeev's message of July 8, 2021 3:32 pm:
>
>
>> On 22-Jun-2021, at 4:27 PM, Nicholas Piggin wrote:
>>
>> Move the P9 guest/host register switching functions to the built-in
>> P9 entry code, and export it for nested to use as well.
>>
>> This allows more flexibility in sc
Excerpts from Athira Rajeev's message of July 10, 2021 12:47 pm:
>
>
>> On 22-Jun-2021, at 4:27 PM, Nicholas Piggin wrote:
>>
>> Implement the P9 path PMU save/restore code in C, and remove the
>> POWER9/10 code from the P7/8 path assembly.
>>
>> -449 cycles (8533) POWER9 virt-mode NULL hcall
Excerpts from Athira Rajeev's message of July 10, 2021 12:50 pm:
>
>
>> On 22-Jun-2021, at 4:27 PM, Nicholas Piggin wrote:
>>
>> KVM PMU management code looks for particular frozen/disabled bits in
>> the PMU registers so it knows whether it must clear them when coming
>> out of a guest or not.
Excerpts from Athira Rajeev's message of July 11, 2021 1:58 am:
> Running perf fuzzer showed below in dmesg logs:
> "Can't find PMC that caused IRQ"
>
> This means a PMU exception happened, but none of the PMC's (Performance
> Monitor Counter) were found to be overflown. There are some corner case
> Subject: [PATCH v2] fpga: dfl: fme: Fix cpu hotplug issue in performance
> reporting
>
> The performance reporting driver added cpu hotplug
> feature but it didn't add pmu migration call in cpu
> offline function.
> This can create an issue incase the current designated
> cpu being used to colle
The conversion to C introduced several bugs in TM handling that can
cause host crashes with TM bad thing interrupts. Mostly just simple
typos or missed logic in the conversion that got through due to my
not testing TM in the guest sufficiently.
- Early TM emulation for the softpatch interrupt shou
Geoff Levand a écrit :
General source cleanups and improved logging messages.
Describe a bit more what you do to cleanup and improve.
Some of your changes are not cleanup , they increase the mess.
You should read kernel coding style
Signed-off-by: Geoff Levand
---
drivers/net/ethernet
Geoff Levand a écrit :
Create two new structures, struct gelic_hw_regs and struct gelic_chain_link,
and replace the corresponding members of struct gelic_descr with the new
structures. struct gelic_hw_regs holds the register variables used by the
gelic hardware device. struct gelic_chain_link
During Live Partition Migration (LPM), it is observed that perf
counter values reports zero post migration completion. However
'perf stat' with workload continues to show counts post migration
since PMU gets disabled/enabled during sched switches. But incase
of system/cpu wide monitoring, zero coun
__FUNCTION__ exists only for backwards compatibility reasons
with old gcc versions. Replace it with __func__.
Signed-off-by: Dwaipayan Ray
---
arch/powerpc/platforms/powernv/opal-imc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/opal-imc.c
__FUNCTION__ exists only for backwards compatibility reasons
with old gcc versions. Replace it with __func__.
Signed-off-by: Dwaipayan Ray
---
arch/powerpc/mm/numa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index f2bf98bd
documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Athira-Rajeev/powerpc-perf-Enable-PMU-counters-post-partition-migration-if-PMU-is-active/20210711-150741
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
confi
During Live Partition Migration (LPM), it is observed that after
migration completion, perf counter values reports 0 incase of
system/cpu wide monitoring. However 'perf stat' with workload
continues to show counts post migration since PMU gets disabled/enabled
during sched switches.
Example:
./pe
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