On Thu, 15 Dec 2016 12:19:02 +0100
Hannes Frederic Sowa wrote:
> On 15.12.2016 03:06, Nicholas Piggin wrote:
> > On Wed, 14 Dec 2016 15:04:36 +0100
> > Hannes Frederic Sowa wrote:
> >
> >> On 09.12.2016 17:03, Greg Kroah-Hartman wrote:
> >>>
On Thu, 15 Dec 2016 14:15:31 +0100
Hannes Frederic Sowa wrote:
> On 15.12.2016 13:03, Nicholas Piggin wrote:
> > On Thu, 15 Dec 2016 12:19:02 +0100
> > Hannes Frederic Sowa wrote:
> >
> >> On 15.12.2016 03:06, Nicholas Piggin wrote:
> >>> On We
On Tue, 29 Nov 2016 01:15:48 +
Ben Hutchings wrote:
> [I've had to guess at the cc list for this, because we no longer have
> mail archives that preserve them.]
You got it about right.
> On Fri, 2016-11-25 at 10:01 -0800, Linus Torvalds wrote:
> > On Thu, Nov 24, 2016
On Wed, 30 Nov 2016 02:33:49 +0100
"Luis R. Rodriguez" wrote:
> On Thu, Nov 24, 2016 at 08:18:40AM -0800, Guenter Roeck wrote:
> > Hi Luis,
> >
> > On 11/23/2016 08:11 PM, Luis R. Rodriguez wrote:
> > > Guenter,
> > >
> > > I think I'm ready to start pushing a new patch set out for review.
>
On Tue, 29 Nov 2016 12:35:57 -0800
Linus Torvalds wrote:
> On Tue, Nov 29, 2016 at 11:57 AM, Ben Hutchings wrote:
> >
> > If the modversion is missing then the fallback should be to a full
> > vermagic match, i.e. including the release string. Something like
> > this (untested):
>
> This rea
On Wed, 30 Nov 2016 21:33:01 +
Ben Hutchings wrote:
> On Wed, 2016-11-30 at 10:40 -0800, Linus Torvalds wrote:
> > > On Wed, Nov 30, 2016 at 10:18 AM, Nicholas Piggin
> > > wrote:
> > >
> > > Here's an initial rough hack at removing modversio
On Thu, 1 Dec 2016 10:06:08 +1100
Stephen Rothwell wrote:
> Hi Michal,
>
> After merging the kbuild tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> WARNING: EXPORT symbol "__sw_hweight32" [vmlinux] version generation failed,
> symbol will not be versioned.
> W
On Wed, 30 Nov 2016 18:38:16 +0100
"Luis R. Rodriguez" wrote:
> On Wed, Nov 30, 2016 at 02:09:47PM +1100, Nicholas Piggin wrote:
> > On Wed, 30 Nov 2016 02:33:49 +0100
> > "Luis R. Rodriguez" wrote:
> >
> > > On Thu, Nov 24, 2016 at 08:18:
On Thu, 01 Dec 2016 02:35:54 +
Ben Hutchings wrote:
> On Thu, 2016-12-01 at 12:55 +1100, Nicholas Piggin wrote:
> > On Wed, 30 Nov 2016 21:33:01 +
> > > Ben Hutchings wrote:
> >
> > > On Wed, 2016-11-30 at 10:40 -0800, Linus Torvalds wrote:
>
On Wed, 30 Nov 2016 23:13:25 -0500
Don Zickus wrote:
> On Wed, Nov 30, 2016 at 10:40:02AM -0800, Linus Torvalds wrote:
> > On Wed, Nov 30, 2016 at 10:18 AM, Nicholas Piggin
> > wrote:
> > >
> > > Here's an initial rough hack at removing modversions. It
On Wed, 30 Nov 2016 19:15:27 -0800
"Luis R. Rodriguez" wrote:
> On Wed, Nov 30, 2016 at 6:51 PM, Nicholas Piggin wrote:
> > On Wed, 30 Nov 2016 18:38:16 +0100
> > "Luis R. Rodriguez" wrote:
> >
> >> On Wed, Nov 30, 2016 at 02:09:47PM +110
On Thu, 1 Dec 2016 16:04:30 +1100
Nicholas Piggin wrote:
> On Wed, 30 Nov 2016 19:15:27 -0800
> "Luis R. Rodriguez" wrote:
>
> > On Wed, Nov 30, 2016 at 6:51 PM, Nicholas Piggin wrote:
> > > On Wed, 30 Nov 2016 18:38:16 +0100
> > > "Luis R.
On Thu, 1 Dec 2016 11:48:09 +0100
Stanislav Kozina wrote:
> On 12/01/2016 05:13 AM, Don Zickus wrote:
>
> ...
>
> > I think GregKH pointed to one such tool, libabigail? We are working on
> > others too.
>
> I should mention one of the others here:
> https://github.com/skozina/kabi-dw
>
> I
On Sun, 20 Nov 2016 19:26:23 +0100
Peter Wu wrote:
> Hi Nicholas,
>
> Current git master (v4.9-rc5-364-g77079b1) with the latest kbuild fixes
> is still failing to load modules when built with CONFIG_MODVERSIONS=y on
> x86_64 using GCC 6.2.1.
>
> It can still be reproduced with make defconfig,
On Sun, 20 Nov 2016 19:12:57 +
Russell King - ARM Linux wrote:
> On Sun, Nov 20, 2016 at 10:32:50AM -0800, Linus Torvalds wrote:
> > On Sun, Nov 20, 2016 at 5:21 AM, Russell King - ARM Linux
> > wrote:
> > > On Tue, Oct 25, 2016 at 07:32:00PM +110
order for them to be versioned.
Add these declarations for x86, and an architecture-independent file that
can be used for common symbols.
(if you want to use that as-is or rewrite it, no problem).
You can add Acked-by: Nicholas Piggin
Also it's not a big deal, but if you redo the
On Mon, 21 Nov 2016 19:13:55 +
Russell King - ARM Linux wrote:
> On Mon, Nov 21, 2016 at 07:46:44PM +0100, Uwe Kleine-König wrote:
> > Hello,
> >
> > On Mon, Oct 24, 2016 at 05:05:26PM +0200, Arnd Bergmann wrote:
> > > This adds an asm/asm-prototypes.h header for ARM to fix the
> > > broke
On Fri, 2 Dec 2016 07:49:52 -0800
"Luis R. Rodriguez" wrote:
> On Thu, Dec 1, 2016 at 10:31 PM, Nicholas Piggin
> wrote:
> >
> > On 2 Dec 2016 2:35 AM, "Luis R. Rodriguez" wrote:
> >>
> >> On Wed, Nov 30, 2016 at 9:20 PM, Nicholas
On Thu, 1 Dec 2016 17:12:41 +0100
Michal Marek wrote:
> On 2016-12-01 04:39, Nicholas Piggin wrote:
> > On Thu, 01 Dec 2016 02:35:54 +
> > Ben Hutchings wrote:
> >> As I understand it, genksyms incorporates the definitions of a
> >> function's param
On Thu, 1 Dec 2016 10:20:39 -0500
Don Zickus wrote:
> On Thu, Dec 01, 2016 at 03:32:15PM +1100, Nicholas Piggin wrote:
> > > Anyway, MODVERSIONS is our way of protecting our kabi for the last 10
> > > years.
> > > It isn't perfect and we have fixed th
On Fri, 9 Dec 2016 08:55:51 +0100
Stanislav Kozina wrote:
> >> The question is how to provide a similar guarantee if a different way?
> > As a tool to aid distro reviewers, modversions has some value, but the
> > debug info parsing tools that have been mentioned in this thread seem
> > superior
On Fri, 9 Dec 2016 15:36:04 +0100
Stanislav Kozina wrote:
> The question is how to provide a similar guarantee if a different way?
> >>> As a tool to aid distro reviewers, modversions has some value, but the
> >>> debug info parsing tools that have been mentioned in this thread seem
> >>>
On Fri, 09 Dec 2016 15:21:33 +
Ian Campbell wrote:
> On Fri, 2016-12-09 at 13:33 +1000, Nicholas Piggin wrote:
> >
> > Well I simply tested the outcome. If you have:
> >
> > struct blah {
> > int x;
> > };
> > int foo(struct blah *blah)
>
On Sat, 10 Dec 2016 13:41:03 +0100
Greg Kroah-Hartman wrote:
> On Fri, Dec 09, 2016 at 11:46:54PM +0100, Dodji Seketeli wrote:
> > Hello,
> >
> > Nicholas Piggin a écrit:
> >
> > [...]
> >
> > > That said, a dwarf based checker tool shoul
On Tue, 21 Mar 2017 02:59:46 +1000
Nicholas Piggin wrote:
> On Mon, 20 Mar 2017 21:24:18 +0530
> This is quite neat now you've moved it to its own function. Nice.
> It will be only a trivial clash with my patches now, I think.
>
> Reviewed-by: Nicholas Piggin
Hmm... This
On Wed, 22 Mar 2017 11:28:46 +0530
Gautham R Shenoy wrote:
> On Tue, Mar 21, 2017 at 02:59:46AM +1000, Nicholas Piggin wrote:
> > On Mon, 20 Mar 2017 21:24:18 +0530
> > "Gautham R. Shenoy" wrote:
> >
> > > From: "Gautham R. Shenoy"
>
on the
> way out by setting the NAPSTATELOST in paca.
>
> [Changelog written with inputs from sva...@linux.vnet.ibm.com]
Looks good.
Reviewed-by: Nicholas Piggin
.c could
become static (pnv_deepest_stop_psscr_*).
Reviewed-by: Nicholas Piggin
t; +static u64 pnv_deepest_stop_psscr_val;
> +static u64 pnv_deepest_stop_psscr_mask;
> +static bool deepest_stop_found;
Aha you have made them static. Nitpick withdrawn :)
The log messages look good now.
Reviewed-by: Nicholas Piggin
n up with
> * hypervisor state loss. If yes, restore hypervisor state and return
> @@ -385,7 +425,14 @@ _GLOBAL(power9_idle_stop)
> */
> _GLOBAL(pnv_restore_hyp_resource)
> BEGIN_FTR_SECTION
> - ld r2,PACATOC(r13);
> +BEGIN_FTR_SECTION_NESTED(70)
> + mflrr6
> + bl power9_dd1_recover_paca
> + mtlrr6
> + ld r2, PACATOC(r13)
> +FTR_SECTION_ELSE_NESTED(70)
> + ld r2, PACATOC(r13)
> +ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_POWER9_DD1, 70)
This is quite neat now you've moved it to its own function. Nice.
It will be only a trivial clash with my patches now, I think.
Reviewed-by: Nicholas Piggin
On Mon, 13 Mar 2017 11:31:26 +0530
"Gautham R. Shenoy" wrote:
> [Changelog written with inputs from sva...@linux.vnet.ibm.com]
> Signed-off-by: Gautham R. Shenoy
Reviewed-by: Nicholas Piggin
> ---
> arch/powerpc/platforms/powernv/smp.c | 10 +-
> 1 file ch
On Mon, 13 Mar 2017 11:31:27 +0530
"Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> Currently during idle-init on power9, if we don't find suitable stop
> states in the device tree that can be used as the
> default_stop/deepest_stop, we set stop0 (ESL=1,EC=1) as the default
> stop sta
On Mon, 13 Mar 2017 11:31:28 +0530
"Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy"
>
> POWER9 platform can be configured to rebalance per-thread resources
> within a core in order to improve SMT performance. Certain STOP
> states can be configure to relinquish resources include some
> h
instead
> of being shown on unrelated pages which have PG_owner_priv_1 set.
>
> Signed-off-by: Hugh Dickins
Thanks Hugh, this seems fine to me. We want this for 4.10, no?
Fixes: 6326fec1122c ("mm: Use owner_priv bit for PageSwapCache, valid when
PageSwapBacked")
Reviewed-by: N
On Tue, 9 Aug 2016 09:30:54 -0700
Andrey Smirnov wrote:
> On Sun, Jul 31, 2016 at 8:40 PM, Nicholas Piggin wrote:
> > On Thu, 28 Jul 2016 16:07:16 -0700
> > Andrey Smirnov wrote:
> >
> >> Factor out a small bit of common code in machine_restart(),
> >&g
On Tue, 9 Aug 2016 11:47:37 -0700
Andrey Smirnov wrote:
> On Sun, Jul 31, 2016 at 9:03 PM, Nicholas Piggin wrote:
> > On Thu, 28 Jul 2016 16:07:18 -0700
> > Andrey Smirnov wrote:
> >
> >> Convert fsl_rstcr_restart into a function to be registered wi
On Wed, 03 Aug 2016 22:13:28 +0200
Arnd Bergmann wrote:
> On Wednesday, August 3, 2016 2:44:29 PM CEST Segher Boessenkool wrote:
> > Hi Arnd,
> >
> > On Wed, Aug 03, 2016 at 08:52:48PM +0200, Arnd Bergmann wrote:
> > > From my first look, it seems that all of lib/*.o is now getting linked
> >
On Thu, 11 Aug 2016 15:04:00 +0200
Arnd Bergmann wrote:
> On Thursday, August 11, 2016 10:43:20 PM CEST Nicholas Piggin wrote:
> > On Wed, 03 Aug 2016 22:13:28 +0200
> > Final ld time
> > inclink
> > real0m0.378s
> > user0m0.304s
> >
On Wed, 03 Aug 2016 14:29:13 +0200
Arnd Bergmann wrote:
> On Wednesday, August 3, 2016 10:19:11 PM CEST Stephen Rothwell wrote:
> > Hi Arnd,
> >
> > On Wed, 03 Aug 2016 09:52:23 +0200 Arnd Bergmann wrote:
> > >
> > > Using a different way to link the kernel would also help us with
> > > the r
On Thu, 04 Aug 2016 12:37:41 +0200
Arnd Bergmann wrote:
> On Thursday, August 4, 2016 11:00:49 AM CEST Arnd Bergmann wrote:
> > I tried this
> >
> > diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> > index b5e40ed86e60..89bca1a25916 100755
> > --- a/scripts/link-vmlinux.sh
> > ++
On Thu, 04 Aug 2016 14:09:02 +0200
Arnd Bergmann wrote:
> On Thursday, August 4, 2016 9:47:13 PM CEST Nicholas Piggin wrote:
> > On Thu, 04 Aug 2016 12:37:41 +0200 Arnd Bergmann wrote:
> > > On Thursday, August 4, 2016 11:00:49 AM CEST Arnd Bergmann wrote:
&g
takes a long time to
> reproduce. I am trying to work on a test case that can reproduce
> the issue faster, but thats work in progress. I am still testing the
> changes on my still in a loop and the tests seem OK thus far.
>
> Big thanks to Benjamin and Nick for helping debug this as
On Wed, 17 Aug 2016 14:59:59 +0200
Michal Marek wrote:
> On 2016-08-17 03:44, Stephen Rothwell wrote:
> > Hi Michal,
> >
> > After merging the kbuild tree, today's linux-next build (powerpc
> > ppc64_defconfig) produced these warnings:
> >
> > WARNING: 25 bad relocations
> > c0cf2570 R_
On Fri, 19 Aug 2016 15:09:14 +1000
Stephen Rothwell wrote:
> Hi Nick,
>
> On Fri, 19 Aug 2016 13:38:54 +1000 Stephen Rothwell
> wrote:
> >
> > On Thu, 18 Aug 2016 11:09:48 +1000 Nicholas Piggin
> > wrote:
> > >
> > > On Wed, 17 A
On Fri, 19 Aug 2016 10:37:00 +0200
Michal Marek wrote:
> On 2016-08-19 07:09, Stephen Rothwell wrote:
> > Hi Nick,
> >
> > On Fri, 19 Aug 2016 13:38:54 +1000 Stephen Rothwell
> > wrote:
> >>
> >> On Thu, 18 Aug 2016 11:09:48 +1000 Nicholas Pigg
An include goes away in future patches which breaks compilation
without this.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/platforms/powernv/pci-ioda-tce.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
b/arch/powerpc/platforms/powernv/pci
airly soon.
Thanks,
Nick
Nicholas Piggin (8):
powerpc/powernv: must include hvcall.h to get PAPR defines
powerpc/pseries: use smp_rmb() in H_CONFER spin yield
powerpc/pseries: move some PAPR paravirt functions to their own file
powerpc: move spinlock implementation to simple_spinlock
p
There is no need for rmb(), this allows faster lwsync here.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/lib/locks.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index 6440d5943c00..47a530de733e 100644
--- a/arch
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 61 +
arch/powerpc/include/asm/spinlock.h | 24 +---
arch/powerpc/lib/locks.c| 12 +++---
3 files changed, 68 insertions(+), 29 deletions(-)
create mode 100644 arch/powerpc
.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 13 +
arch/powerpc/include/asm/Kbuild | 2 ++
arch/powerpc/include/asm/qspinlock.h | 20
arch/powerpc/include/asm/spinlock.h | 5 +
arch/powerpc/include/asm
RFC until we settle on queued spinlocks for 64s and remove the
option to go back to simple locks. If other sub-archs want to keep
simple spinlocks, the code can be nicely simplified.
---
arch/powerpc/include/asm/simple_spinlock.h | 61 +---
arch/powerpc/kvm/book3s_hv_rm_mmu.c
This brings the behaviour of the uncontended fast path back to
roughly equivalent to simple spinlocks -- a single atomic op with
lock hint.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/atomic.h| 28
arch/powerpc/include/asm/qspinlock.h | 2 +-
2
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 23
arch/powerpc/include/asm/qspinlock.h | 55 +++
arch/powerpc/include/asm/qspinlock_paravirt.h | 5 ++
arch/powerpc/platforms/pseries/Kconfig| 5 ++
arch/powerpc
To prepare for queued spinlocks. This is a simple rename except to update
preprocessor guard name and a file reference.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/simple_spinlock.h| 292 ++
.../include/asm/simple_spinlock_types.h | 21 ++
arch/powerpc
Excerpts from Will Deacon's message of July 2, 2020 6:02 pm:
> On Thu, Jul 02, 2020 at 05:48:36PM +1000, Nicholas Piggin wrote:
>> diff --git a/arch/powerpc/include/asm/qspinlock.h
>> b/arch/powerpc/include/asm/qspinlock.h
>> new file mode 100644
>> index 00
Excerpts from Peter Zijlstra's message of July 2, 2020 6:28 pm:
> On Thu, Jul 02, 2020 at 05:48:33PM +1000, Nicholas Piggin wrote:
>> There is no need for rmb(), this allows faster lwsync here.
>
> Since you determined this; I'm thinking you actually understand the
&
Excerpts from Will Deacon's message of July 2, 2020 8:35 pm:
> On Thu, Jul 02, 2020 at 08:25:43PM +1000, Nicholas Piggin wrote:
>> Excerpts from Will Deacon's message of July 2, 2020 6:02 pm:
>> > On Thu, Jul 02, 2020 at 05:48:36PM +1000, Nicholas Piggin wrote:
>
Excerpts from Zefan Li's message of July 1, 2020 5:10 pm:
>> static void *__vmalloc_node(unsigned long size, unsigned long align,
>> -gfp_t gfp_mask, pgprot_t prot,
>> -int node, const void *caller);
>> +gfp_t gfp_mask, pgprot_t p
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 61 +
arch/powerpc/include/asm/spinlock.h | 24 +---
arch/powerpc/lib/locks.c| 12 +++---
3 files changed, 68 insertions(+), 29 deletions(-)
create mode 100644 arch/powerpc
An include goes away in future patches which breaks compilation
without this.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/platforms/powernv/pci-ioda-tce.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
b/arch/powerpc/platforms/powernv/pci
.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 13
arch/powerpc/include/asm/Kbuild | 2 ++
arch/powerpc/include/asm/qspinlock.h | 25 +++
arch/powerpc/include/asm/spinlock.h | 5 +
arch/powerpc/include
To prepare for queued spinlocks. This is a simple rename except to update
preprocessor guard name and a file reference.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/simple_spinlock.h| 292 ++
.../include/asm/simple_spinlock_types.h | 21 ++
arch/powerpc
v2 is updated to account for feedback from Will, Peter, and
Waiman (thank you), and trims off a couple of RFC and unrelated
patches.
Thanks,
Nick
Nicholas Piggin (6):
powerpc/powernv: must include hvcall.h to get PAPR defines
powerpc/pseries: move some PAPR paravirt functions to their own
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 28 ++
arch/powerpc/include/asm/qspinlock.h | 55 +++
arch/powerpc/include/asm/qspinlock_paravirt.h | 5 ++
arch/powerpc/platforms/pseries/Kconfig| 5 ++
arch/powerpc
This brings the behaviour of the uncontended fast path back to
roughly equivalent to simple spinlocks -- a single atomic op with
lock hint.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/atomic.h| 28
arch/powerpc/include/asm/qspinlock.h | 2 +-
2
Excerpts from Steven Rostedt's message of June 30, 2020 8:16 am:
> On Thu, 25 Jun 2020 15:34:03 +1000
> Nicholas Piggin wrote:
>
>> Batch these up so we disable all the per-cpu buffers first, then
>> synchronize_rcu() once, then reset each of the buffers. This brings
Excerpts from Oleg Nesterov's message of June 30, 2020 12:02 am:
> On 06/29, Nicholas Piggin wrote:
>>
>> prepare_to_wait_event() has a pretty good pattern (and comment), I would
>> favour using that (test the signal when inserting on the waitqueue).
>>
>> @@
Excerpts from Linus Torvalds's message of June 30, 2020 2:36 am:
> On Mon, Jun 29, 2020 at 6:16 AM Nicholas Piggin wrote:
>>
>> No, ignore this part (which you explained well it was just a thinko,
>> and your patch of course would not have worked if this was the case)
Excerpts from Oleg Nesterov's message of June 30, 2020 4:17 pm:
> On 06/30, Nicholas Piggin wrote:
>> Excerpts from Oleg Nesterov's message of June 30, 2020 12:02 am:
>> > On 06/29, Nicholas Piggin wrote:
>> >>
>> >> prepare_to_wait_even
.
Cc: Paul McKenney
Cc: Anton Blanchard
Cc: Steven Rostedt
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Nicholas Piggin
---
include/linux/ring_buffer.h | 1 +
kernel/trace/ring_buffer.c | 85 +++--
kernel/trace/trace.c| 4 +-
3 files changed, 73
Excerpts from Waiman Long's message of July 8, 2020 1:33 pm:
> On 7/7/20 1:57 AM, Nicholas Piggin wrote:
>> Yes, powerpc could certainly get more performance out of the slow
>> paths, and then there are a few parameters to tune.
>>
>> We don't have a good alte
Excerpts from Nicholas Piggin's message of July 13, 2020 2:45 pm:
> Excerpts from Andy Lutomirski's message of July 11, 2020 3:04 am:
>> Also, as it stands, I can easily see in_irq() ceasing to promise to
>> serialize. There are older kernels for which it does not promise to
>> serialize. And I h
Excerpts from Andy Lutomirski's message of July 14, 2020 1:48 am:
> On Mon, Jul 13, 2020 at 7:13 AM Mathieu Desnoyers
> wrote:
>>
>> - On Jul 13, 2020, at 9:47 AM, Nicholas Piggin npig...@gmail.com wrote:
>>
>> > Excerpts from Nicholas Piggin's messa
Excerpts from Andy Lutomirski's message of July 14, 2020 1:59 am:
> On Thu, Jul 9, 2020 at 6:57 PM Nicholas Piggin wrote:
>>
>> On big systems, the mm refcount can become highly contented when doing
>> a lot of context switching with threaded applications (particularl
Excerpts from Pratik Sampat's message of July 13, 2020 8:02 pm:
> Thank you for your comments,
>
> On 13/07/20 10:53 am, Nicholas Piggin wrote:
>> Excerpts from Pratik Rajesh Sampat's message of July 10, 2020 3:22 pm:
>>> Changelog v1 --> v2:
>>> 1.
Excerpts from Gautham R Shenoy's message of July 13, 2020 8:48 pm:
> On Mon, Jul 13, 2020 at 03:23:21PM +1000, Nicholas Piggin wrote:
>> Excerpts from Pratik Rajesh Sampat's message of July 10, 2020 3:22 pm:
>> > Changelog v1 --> v2:
>> > 1. Save-restore DA
Excerpts from Andy Lutomirski's message of July 14, 2020 4:18 am:
>
>> On Jul 13, 2020, at 9:48 AM, Nicholas Piggin wrote:
>>
>> Excerpts from Andy Lutomirski's message of July 14, 2020 1:59 am:
>>>> On Thu, Jul 9, 2020 at 6:57 PM Nicholas Piggi
Excerpts from Nicholas Piggin's message of July 14, 2020 3:04 pm:
> Excerpts from Andy Lutomirski's message of July 14, 2020 4:18 am:
>>
>>> On Jul 13, 2020, at 9:48 AM, Nicholas Piggin wrote:
>>>
>>> Excerpts from Andy Lutomirski's message
veral compile errors and warnings
- Keep the page array and accounting in small page units because
struct vm_struct is an interface (this should fix x86 vmap stack debug
assert). [Thanks Zefan]
Nicholas Piggin (12):
mm/vmalloc: fix vmalloc_to_page for huge vmap mappings
mm: apply_to_pte_
This will be used as a generic kernel virtual mapping function, so
re-name it in preparation.
Signed-off-by: Nicholas Piggin
---
mm/ioremap.c | 64 +++-
1 file changed, 33 insertions(+), 31 deletions(-)
diff --git a/mm/ioremap.c b/mm/ioremap.c
apply_to_pte_range might mistake a large pte for bad, or treat it as a
page table, resulting in a crash or corruption. Add a test to warn and
return error if large entries are found.
Signed-off-by: Nicholas Piggin
---
mm/memory.c | 60 +++--
1
The vmalloc mapper operates on a struct page * array rather than a
linear physical address, re-name it to make this distinction clear.
Signed-off-by: Nicholas Piggin
---
mm/vmalloc.c | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
pings")
Signed-off-by: Nicholas Piggin
---
mm/vmalloc.c | 41 ++---
1 file changed, 26 insertions(+), 15 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index b482d240f9a2..4e9b21adc73d 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -36,7 +36,7 @@
As a side-effect, the order of flush_cache_vmap() and
arch_sync_kernel_mappings() calls are switched, but that now matches
the other callers in this file.
Signed-off-by: Nicholas Piggin
---
mm/vmalloc.c | 16 +---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/mm
d.org
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Borislav Petkov
Cc: x...@kernel.org
Cc: "H. Peter Anvin"
Signed-off-by: Nicholas Piggin
---
Ack or objection from arch maintainers if this goes via the -mm tree?
arch/arm64/include/asm/vmalloc.h | 8 +++
arch
This allows unsupported levels to be constant folded away, and so
p4d_free_pud_page can be removed because it's no longer linked to.
Cc: linuxppc-...@lists.ozlabs.org
Signed-off-by: Nicholas Piggin
---
Ack or objection if this goes via the -mm tree?
arch/powerpc/include/asm/vmal
This allows unsupported levels to be constant folded away, and so
p4d_free_pud_page can be removed because it's no longer linked to.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: linux-arm-ker...@lists.infradead.org
Signed-off-by: Nicholas Piggin
---
Ack or objection if this goes via the -mm
This is a generic kernel virtual memory mapper, not specific to ioremap.
Signed-off-by: Nicholas Piggin
---
include/linux/vmalloc.h | 3 +
mm/ioremap.c| 197
mm/vmalloc.c| 196 +++
3 files
This allows unsupported levels to be constant folded away, and so
p4d_free_pud_page can be removed because it's no longer linked to.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Borislav Petkov
Cc: x...@kernel.org
Cc: "H. Peter Anvin"
Signed-off-by: Nicholas Piggin
---
Ack or ob
Cc: linuxppc-...@lists.ozlabs.org
Signed-off-by: Nicholas Piggin
---
Documentation/admin-guide/kernel-parameters.txt | 2 ++
arch/powerpc/Kconfig| 1 +
2 files changed, 3 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt
b/Documentation
ces CPU cycles by 0.54%.
This can result in more internal fragmentation and memory overhead for a
given allocation, an option nohugevmalloc is added to disable at boot.
Signed-off-by: Nicholas Piggin
---
arch/Kconfig| 4 +
include/linux/vmalloc.h | 1 +
mm/page_alloc.c |
Excerpts from Vineet Gupta's message of July 28, 2020 2:01 pm:
> On 7/27/20 8:33 PM, Nicholas Piggin wrote:
>> Many of these are no-ops on many architectures, so extend mmu_context.h
>> to cover MMU and NOMMU, and split the NOMMU bits out to nommu_context.h
>>
>
>
Excerpts from Vineet Gupta's message of July 28, 2020 2:14 pm:
> On 7/27/20 8:33 PM, Nicholas Piggin wrote:
>> Cc: Russell King
>> Cc: linux-arm-ker...@lists.infradead.org
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/arm/include/asm/mmu_context.h | 26
Excerpts from Stafford Horne's message of July 29, 2020 9:45 pm:
> On Tue, Jul 28, 2020 at 01:33:55PM +1000, Nicholas Piggin wrote:
>> Cc: Jonas Bonn
>> Cc: Stefan Kristiansson
>> Cc: Stafford Horne
>> Cc: openr...@lists.librecores.org
>> Signed-off-by: Nic
Many of these are no-ops on many architectures, so extend mmu_context.h
to cover MMU and NOMMU, and split the NOMMU bits out to nommu_context.h
Cc: Arnd Bergmann
Cc: linux-a...@vger.kernel.org
Signed-off-by: Nicholas Piggin
---
arch/microblaze/include/asm/mmu_context.h | 2 +-
arch/sh/include
Cc: Thomas Bogendoerfer
Cc: linux-m...@vger.kernel.org
Signed-off-by: Nicholas Piggin
---
arch/mips/include/asm/mmu_context.h | 11 ---
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/arch/mips/include/asm/mmu_context.h
b/arch/mips/include/asm/mmu_context.h
index
Cc: Geert Uytterhoeven
Cc: linux-m...@lists.linux-m68k.org
Signed-off-by: Nicholas Piggin
---
arch/m68k/include/asm/mmu_context.h | 47 +
1 file changed, 8 insertions(+), 39 deletions(-)
diff --git a/arch/m68k/include/asm/mmu_context.h
b/arch/m68k/include/asm
Cc: Nick Hu
Cc: Greentime Hu
Cc: Vincent Chen
Signed-off-by: Nicholas Piggin
---
arch/nds32/include/asm/mmu_context.h | 10 ++
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/arch/nds32/include/asm/mmu_context.h
b/arch/nds32/include/asm/mmu_context.h
index b8fd3d189fdc
Cc: Ley Foon Tan
Signed-off-by: Nicholas Piggin
---
arch/nios2/include/asm/mmu_context.h | 21 -
1 file changed, 4 insertions(+), 17 deletions(-)
diff --git a/arch/nios2/include/asm/mmu_context.h
b/arch/nios2/include/asm/mmu_context.h
index 78ab3dacf579..4f99ed09b5a7
Cc: "David S. Miller"
Cc: sparcli...@vger.kernel.org
Signed-off-by: Nicholas Piggin
---
arch/sparc/include/asm/mmu_context_32.h | 10 --
arch/sparc/include/asm/mmu_context_64.h | 10 +-
2 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/arch/sparc/i
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