Alistair Popple writes:
> Peter Xu writes:
>
>> On Fri, Aug 26, 2022 at 08:21:44AM +1000, Alistair Popple wrote:
>>>
>>> Peter Xu writes:
>>>
>>> > On Wed, Aug 24, 2022 at 01:03:38PM +1000, Alistair Popple wrote:
>>> >> migrate_vma_setup() has a fast path in migrate_vma_collect_pmd() that
>>>
Peter Xu writes:
> On Fri, Aug 26, 2022 at 08:21:44AM +1000, Alistair Popple wrote:
>>
>> Peter Xu writes:
>>
>> > On Wed, Aug 24, 2022 at 01:03:38PM +1000, Alistair Popple wrote:
>> >> migrate_vma_setup() has a fast path in migrate_vma_collect_pmd() that
>> >> installs migration entries
Alistair Popple writes:
> "Huang, Ying" writes:
>
>> Alistair Popple writes:
>>
>>> When clearing a PTE the TLB should be flushed whilst still holding the
>>> PTL to avoid a potential race with madvise/munmap/etc. For example
>>> consider the following sequence:
>>>
>>> CPU0
On Fri, Aug 26, 2022 at 08:09:28AM +1000, Alistair Popple wrote:
> > I looked at some of the callers, it seems not all of them are ready to
> > handle that (__kvmppc_svm_page_out() or svm_migrate_vma_to_vram()). Is it
> > safe? Do the callers need to always properly handle that (unless the
> >
On Fri, Aug 26, 2022 at 08:21:44AM +1000, Alistair Popple wrote:
>
> Peter Xu writes:
>
> > On Wed, Aug 24, 2022 at 01:03:38PM +1000, Alistair Popple wrote:
> >> migrate_vma_setup() has a fast path in migrate_vma_collect_pmd() that
> >> installs migration entries directly if it can lock the
Masahiro Yamada writes:
> On Thu, Aug 25, 2022 at 4:53 PM Michael Ellerman wrote:
>>
>> Masahiro Yamada writes:
>> > Christophe Leroy reported that commit 7b4537199a4a ("kbuild: link
>> > symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS") broke
>> > mpc85xx_defconfig +
"Huang, Ying" writes:
> Alistair Popple writes:
>
>> When clearing a PTE the TLB should be flushed whilst still holding the
>> PTL to avoid a potential race with madvise/munmap/etc. For example
>> consider the following sequence:
>>
>> CPU0 CPU1
>>
Peter Xu writes:
> On Wed, Aug 24, 2022 at 01:03:38PM +1000, Alistair Popple wrote:
>> migrate_vma_setup() has a fast path in migrate_vma_collect_pmd() that
>> installs migration entries directly if it can lock the migrating page.
>> When removing a dirty pte the dirty bit is supposed to be
Peter Xu writes:
> On Thu, Aug 25, 2022 at 11:24:03AM +1000, Alistair Popple wrote:
>> By the way it's still an optimisation because in most cases we can avoid
>> calling try_to_migrate() and walking the rmap altogether if we install
>> the migration entries here. But I agree the comment is
On Sat, Aug 20, 2022 at 10:17:41AM +1000, Michael Ellerman wrote:
> Bjorn Helgaas writes:
> > On Sat, Aug 06, 2022 at 06:53:01PM +1000, Russell Currey wrote:
> >> I haven't touched EEH in a long time I don't have much knowledge of the
> >> subsystem at this point either, so it's misleading to
Hi!
On Thu, Aug 25, 2022 at 04:00:52PM +0530, Naveen N. Rao wrote:
> This is causing a build issue on ppc64le with a new patch replacing use
> of unreachable() with __builtin_unreachable() in __WARN_FLAGS():
> https://lore.kernel.org/linuxppc-dev/20220808114908.240813-2...@linux.ibm.com/
What
On Thu, Aug 25, 2022 at 11:24:03AM +1000, Alistair Popple wrote:
> By the way it's still an optimisation because in most cases we can avoid
> calling try_to_migrate() and walking the rmap altogether if we install
> the migration entries here. But I agree the comment is misleading.
There's one
On 23 August 2022 at 03:50 am, Michael Ellerman wrote:
Arminder Singh writes:
This is the first time I'm interacting with the Linux mailing lists, so
please don't eviscerate me *too much* if I get the formatting wrong.
Of course I'm always willing to take criticism and improve my formatting
in
On Thu, Aug 25, 2022 at 10:42:41AM +1000, Alistair Popple wrote:
>
> Peter Xu writes:
>
> > On Wed, Aug 24, 2022 at 04:25:44PM -0400, Peter Xu wrote:
> >> On Wed, Aug 24, 2022 at 11:56:25AM +1000, Alistair Popple wrote:
> >> > >> Still I don't know whether there'll be any side effect of having
On Thu, Aug 25, 2022 at 4:53 PM Michael Ellerman wrote:
>
> Masahiro Yamada writes:
> > Christophe Leroy reported that commit 7b4537199a4a ("kbuild: link
> > symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS") broke
> > mpc85xx_defconfig + CONFIG_RELOCATABLE=y.
> >
> > LD
On Thu, Aug 25, 2022 at 12:30 PM Naveen N. Rao
wrote:
>
> Uros Bizjak wrote:
> > The workaround for 'asm goto' miscompilation introduces a compiler
> > barrier quirk that inhibits many useful compiler optimizations. For
> > example, __try_cmpxchg_user compiles to:
> >
> >11375: 41 8b 4d
Delete the redundant word 'to'.
Signed-off-by: Jilin Yuan
---
drivers/soc/fsl/dpio/dpio-service.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/fsl/dpio/dpio-service.c
b/drivers/soc/fsl/dpio/dpio-service.c
index 1d2b27e3ea63..5315e01624c7 100644
---
On Sat, Aug 20, 2022 at 9:45 PM Arminder Singh wrote:
>
> I also fixed a quick checkpatch warning on line 303. "i ++" is now "i++".
In general, anything that is mentioned in the changelog as "also done this"
is worth splitting into a separate patch, or dropping from the patch, to
make reviewing
https://bugzilla.kernel.org/show_bug.cgi?id=216368
--- Comment #5 from Erhard F. (erhar...@mailbox.org) ---
(In reply to The Linux kernel's regression tracker (Thorsten Leemhuis) from
comment #4)
> Did anyone forward this to the Btrfs team? if so: where? If not I guess I
> can do that.
I added
Le 25/08/2022 à 12:30, Naveen N. Rao a écrit :
> Uros Bizjak wrote:
>> The workaround for 'asm goto' miscompilation introduces a compiler
>> barrier quirk that inhibits many useful compiler optimizations. For
>> example, __try_cmpxchg_user compiles to:
>>
>> 11375: 41 8b 4d 00
https://bugzilla.kernel.org/show_bug.cgi?id=216368
The Linux kernel's regression tracker (Thorsten Leemhuis)
(regressi...@leemhuis.info) changed:
What|Removed |Added
Uros Bizjak wrote:
The workaround for 'asm goto' miscompilation introduces a compiler
barrier quirk that inhibits many useful compiler optimizations. For
example, __try_cmpxchg_user compiles to:
11375: 41 8b 4d 00 mov0x0(%r13),%ecx
11379: 41 8b 02
The number of bits can be calculated using tty_get_frame_size(), no
need for the driver to do it on its own.
Also remove a comment on number of bits that doesn't match the code nor
the comment on ucc_uart_pram's rx_length ("minus 1" part differs). That
comment seems a verbatim copy of that in
On Thursday 25 August 2022 17:49:28 Michael Ellerman wrote:
> Pali Rohár writes:
> > On 32-bit powerpc systems with more PCIe controllers and more PCI domains,
> > where on more PCI domains are same PCI numbers, when kernel is compiled
> > with CONFIG_PROC_FS=y and
Jordan Niethe writes:
> On Wed, 2022-08-24 at 22:04 +1000, Michael Ellerman wrote:
>> Jordan Niethe writes:
>> > On Tue, 2022-08-23 at 21:59 +1000, Michael Ellerman wrote:
>> > > The semi-recent changes to MSR handling when entering RTAS (firmware)
>> > > cause crashes on IBM Cell machines. An
Masahiro Yamada writes:
> Christophe Leroy reported that commit 7b4537199a4a ("kbuild: link
> symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS") broke
> mpc85xx_defconfig + CONFIG_RELOCATABLE=y.
>
> LD vmlinux
> SYSMAP System.map
> SORTTAB vmlinux
> CHKREL
Pali Rohár writes:
> On 32-bit powerpc systems with more PCIe controllers and more PCI domains,
> where on more PCI domains are same PCI numbers, when kernel is compiled
> with CONFIG_PROC_FS=y and CONFIG_PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT=y
> options, kernel prints "proc_dir_entry 'pci/01' already
From: ye xingchen
Return the value vas_register_coproc_api() directly instead of storing it
in another redundant variable.
Reported-by: Zeal Robot
Signed-off-by: ye xingchen
---
arch/powerpc/platforms/pseries/vas.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git
On Wed, 2022-08-24 at 12:05 +1000, Rohan McLure wrote:
> The asmlinkage macro has no special meaning in powerpc, and prior to
> this patch is used sporadically on some syscall handler definitions.
> On
> architectures that do not define asmlinkage, it resolves to extern
> "C"
> for C++ compilers
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