On 04/13, Dong Aisheng wrote:
> On Wed, Apr 12, 2017 at 12:03:28PM +0800, Dong Aisheng wrote:
>
>drivers/built-in.o: In function `devm_clk_bulk_get':
> >> (.text+0x1930e): undefined reference to `clk_bulk_get'
>drivers/built-in.o: In function `devm_clk_bulk_release':
> >> clk-devres.c:(.te
On 04/12, Dong Aisheng wrote:
>
> Together with the err path handling for each clocks, it does make
> things a bit ugly.
>
> Since we already have regulator_bulk_get accessories, i thought we
> probably could introduce clk_bulk_get as well to handle such case to
> ease the driver owners' life.
>
On Fri, 21 Apr 2017, Kees Cook wrote:
> > The linux-4.2 x86 defconfig could still be built with gcc-4.0, but
> > later kernels have several minor problems with that, and
> > require at least gcc-4.3.
> >
> > If we are ok with this status quo, we could simply declare gcc-4.3
> > the absolute minimu
On 04/12, Dong Aisheng wrote:
>
> #ifdef CONFIG_HAVE_CLK
> @@ -230,6 +257,32 @@ static inline void clk_unprepare(struct clk *clk)
> struct clk *clk_get(struct device *dev, const char *id);
>
> /**
> + * clk_bulk_get - lookup and obtain a number of references to clock producer.
> + * @dev: de
On Sat, 22 Apr 2017 08:00:36 +0900
Masami Hiramatsu wrote:
>
> BTW, this seems too complecated (with many similar variables).
I'm use to complicated ;-)
> I think we just need following patch, if we run the tests which
> have "instance" flag twice on top-level and an instance.
> (If you'd like
This does not use existing page table walker because we want to share
same code for our page fault handler.
Changes since v1:
- Use spinlock instead of rcu synchronized list traversal
Signed-off-by: Jérôme Glisse
Signed-off-by: Evgeny Baskakov
Signed-off-by: John Hubbard
Signed-off-by: Mark
Patchset is on top of mmotm mmotm-2017-04-18 and Michal patchset
([PATCH -v3 0/13] mm: make movable onlining suck less). Branch:
https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-v20
I have included all suggestion made since v19, it is all build
fix and change in respect to memory hotplug wit
Common case for migration of virtual address range is page are map
only once inside the vma in which migration is taking place. Because
we already walk the CPU page table for that range we can directly do
the unmap there and setup special migration swap entry.
Signed-off-by: Jérôme Glisse
Signed-
This introduce a simple struct and associated helpers for device driver
to use when hotpluging un-addressable device memory as ZONE_DEVICE. It
will find a unuse physical address range and trigger memory hotplug for
it which allocates and initialize struct page for the device memory.
Changed since
This handle page fault on behalf of device driver, unlike handle_mm_fault()
it does not trigger migration back to system memory for device memory.
Signed-off-by: Jérôme Glisse
Signed-off-by: Evgeny Baskakov
Signed-off-by: John Hubbard
Signed-off-by: Mark Hairgrove
Signed-off-by: Sherry Cheung
This allow caller of migrate_vma() to allocate new page for empty CPU
page table entry. It only support anoymous memory and it won't allow
new page to be instance if userfaultfd is armed.
This is useful to device driver that want to migrate a range of virtual
address and would rather allocate new
This add documentation for HMM (Heterogeneous Memory Management). It
presents the motivation behind it, the features necessary for it to
be useful and and gives an overview of how this is implemented.
Signed-off-by: Jérôme Glisse
---
Documentation/vm/hmm.txt | 362 +++
On 04/21/2017 03:15 PM, Guenter Roeck wrote:
From: Guenter Roeck
This driver implements the USB Type-C Power Delivery state machine
for both source and sink ports. Alternate mode support is not
fully implemented.
The driver attaches to the USB Type-C class code implemented in
the following pat
Move page reference decrement of ZONE_DEVICE from put_page()
to put_zone_device_page() this does not affect non ZONE_DEVICE
page.
Doing this allow to catch when a ZONE_DEVICE page refcount reach
1 which means the device is no longer reference by any one (unlike
page from other zone, ZONE_DEVICE pa
> On Apr 21, 2017, at 9:21 PM, Geliang Tang wrote:
>
> Use offset_in_page() macro instead of open-coding.
>
> Signed-off-by: Geliang Tang
> ---
> net/sunrpc/xprtrdma/rpc_rdma.c| 4 ++--
> net/sunrpc/xprtrdma/svc_rdma_sendto.c | 3 +--
> 2 files changed, 3 insertions(+), 4 deletions(-)
>
This patch add a new memory migration helpers, which migrate memory
backing a range of virtual address of a process to different memory
(which can be allocated through special allocator). It differs from
numa migration by working on a range of virtual address and thus by
doing migration in chunk th
Introduce a new migration mode that allow to offload the copy to
a device DMA engine. This changes the workflow of migration and
not all address_space migratepage callback can support this. So
it needs to be tested in those cases.
This is intended to be use by migrate_vma() which itself is use
for
Allow to unmap and restore special swap entry of un-addressable
ZONE_DEVICE memory.
Signed-off-by: Jérôme Glisse
Cc: Kirill A. Shutemov
---
include/linux/migrate.h | 10 +++-
mm/migrate.c| 136 ++--
mm/page_vma_mapped.c| 10
mm/
>From 4464dc867ead3ea14654165ad3ab68263aff7b17 Mon Sep 17 00:00:00 2001
From: "Steven Rostedt (VMware)"
Date: Thu, 20 Apr 2017 12:53:18 -0400
Subject: [PATCH] selftests: ftrace: Allow some tests to be run in a tracing
instance
An tracing instance has several of the same capabilities as the top l
HMM (heterogeneous memory management) need struct page to support migration
from system main memory to device memory. Reasons for HMM and migration to
device memory is explained with HMM core patch.
This patch deals with device memory that is un-addressable memory (ie CPU
can not access it). Henc
From: Michal Hocko
There are new users of memory hotplug emerging. Some of them require
different subset of arch_add_memory. There are some which only require
allocation of struct pages without mapping those pages to the kernel
address space. We currently have __add_pages for that purpose. But th
HMM provides 3 separate types of functionality:
- Mirroring: synchronize CPU page table and device page table
- Device memory: allocating struct page for device memory
- Migration: migrating regular memory to device memory
This patch introduces some common helpers and definitions to al
This is a heterogeneous memory management (HMM) process address space
mirroring. In a nutshell this provide an API to mirror process address
space on a device. This boils down to keeping CPU and device page table
synchronize (we assume that both device and CPU are cache coherent like
PCIe device ca
Looks like 4.11 will be release in a few days, it would be nice if this
commit reaches the upstream tree before this moment.
Thanks.
On Thu, Apr 20, 2017 at 07:06:49AM -0700, tip-bot for Keith Busch wrote:
> Commit-ID: b72f8051f34b8164a62391e3676edc34523c5952
> Gitweb: http://git.kernel.org/
On Fri, Apr 21, 2017 at 8:30 PM, Jérôme Glisse wrote:
> Move page reference decrement of ZONE_DEVICE from put_page()
> to put_zone_device_page() this does not affect non ZONE_DEVICE
> page.
>
> Doing this allow to catch when a ZONE_DEVICE page refcount reach
> 1 which means the device is no longer
This introduce a dummy HMM device class so device driver can use it to
create hmm_device for the sole purpose of registering device memory.
It is useful to device driver that want to manage multiple physical
device memory under same struct device umbrella.
Changed since v2:
- use device_initcall
On Fri, Apr 21, 2017 at 12:59 PM, Ville Syrjälä
wrote:
> On Fri, Apr 21, 2017 at 10:49:49AM -0400, Ilia Mirkin wrote:
>> On Fri, Apr 21, 2017 at 3:58 AM, Gerd Hoffmann wrote:
>> > While working on graphics support for virtual machines on ppc64 (which
>> > exists in both little and big endian vari
On Fri, Apr 21, 2017 at 8:30 PM, Jérôme Glisse wrote:
> HMM (heterogeneous memory management) need struct page to support migration
> from system main memory to device memory. Reasons for HMM and migration to
> device memory is explained with HMM core patch.
>
> This patch deals with device memor
I'm announcing the release of the 3.18.50 kernel.
All users of the 3.18 kernel series must upgrade.
The updated 3.18.y git tree can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
linux-3.18.y
and can be browsed at the normal kernel.org git web browser:
diff --git a/Makefile b/Makefile
index 252070fdf91c..8665178e2a36 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 18
-SUBLEVEL = 49
+SUBLEVEL = 50
EXTRAVERSION =
NAME = Diseased Newt
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
index e37
Shuah Khan writes:
> Define CLEAN macro to allow Makefiles to override common clean target
> in lib.mk. This will help fix the following failures:
>
> warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
>
> Signed-off-by: Shuah Khan
Shou
Shuah Khan writes:
> Add override for lib.mk clean to fix the following warnings from clean
> target run.
>
> Makefile:11: warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
>
> Signed-off-by: Shuah Khan
> ---
> tools/testing/selftests/
Shuah Khan writes:
> Add override for lib.mk clean to fix the following warnings from clean
> target run.
>
> Makefile:24: warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
>
> Signed-off-by: Shuah Khan
> ---
> tools/testing/selftests/
Shuah Khan writes:
> Add override for lib.mk clean to fix the following warnings from clean
> target run.
>
> Makefile:8: warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
>
> Signed-off-by: Shuah Khan
> ---
> tools/testing/selftests/s
Shuah Khan writes:
> Add override for lib.mk clean to fix the following warnings from clean
> target run.
>
> Makefile:44: warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
>
> Signed-off-by: Shuah Khan
> ---
> tools/testing/selftests/
"Naveen N. Rao" writes:
> When a kprobe is being registered, we use the symbol_name field to
> lookup the address where the probe should be placed. Since this is a
> user-provided field, let's ensure that the length of the string is
> within expected limits.
What are we actually trying to protec
"Naveen N. Rao" writes:
> Excerpts from Christophe Leroy's message of April 21, 2017 18:32:
>> diff --git a/arch/powerpc/kernel/ftrace.c
>> b/arch/powerpc/kernel/ftrace.c
>> index 32509de6ce4c..06d2ac53f471 100644
>> --- a/arch/powerpc/kernel/ftrace.c
>> +++ b/arch/powerpc/kernel/ftrace.c
>> @@ -
"Paul E. McKenney" writes:
> On Fri, Apr 21, 2017 at 09:27:59AM +0200, Paolo Bonzini wrote:
>> On 21/04/2017 06:17, Paul E. McKenney wrote:
>> >> Thanks, this looks perfect to me, and if you're happy to put it on top
>> >> of your tree that would limit the breakage to a smaller history window,
>>
Shilpasri G Bhat writes:
> On 04/21/2017 05:17 PM, Cédric Le Goater wrote:
>> On 04/21/2017 06:31 AM, Shilpasri G Bhat wrote:
>>> diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c
>>> index 6d2e660..1f329fa8 100644
>>> --- a/drivers/hwmon/ibmpowernv.c
>>> +++ b/drivers/hwmon/ibm
On 2017.04.20 18:18 Rafael wrote:
> On Thursday, April 20, 2017 07:55:57 AM Doug Smythies wrote:
>> On 2017.04.19 01:16 Mel Gorman wrote:
>>> On Fri, Apr 14, 2017 at 04:01:40PM -0700, Doug Smythies wrote:
Hi Mel,
>
> [cut]
>
>>> And the revert does help albeit not being an option for reasons R
When checking the response verb, the valid bit should be masked out,
since its value flips depending on what Response Register
(RR0 /RR1) it's been read from.
Fixes: 321eecb06bfb ("bus: fsl-mc: dpio: add QBMan portal APIs for DPAA2")
Signed-off-by: Horia Geantă
---
v2: use QBMAN_RESULT_MASK inste
On Fri, Apr 21, 2017 at 5:13 PM, Casey Schaufler wrote:
> On 4/21/2017 5:00 PM, Andy Lutomirski wrote:
>> On Fri, Apr 21, 2017 at 4:52 PM, Casey Schaufler
>> wrote:
>>> On 4/21/2017 4:28 PM, Andy Lutomirski wrote:
On Fri, Apr 21, 2017 at 4:19 PM, Kees Cook wrote:
> On Wed, Apr 19, 2017
On Fri, Apr 21, 2017 at 5:12 PM, Djalal Harouni wrote:
> On Sat, Apr 22, 2017 at 1:51 AM, Andy Lutomirski wrote:
> [...]
I personally like my implicit_rights idea, and it might be interesting
to prototype it.
>>>
>>> I don't like blocking a needed feature behind a large super-feature
>>
On Sat, 22 Apr 2017 00:14:57 +0200,
Julia Lawall wrote:
>
> I don't think the patch is correct, so I haven't bothered signing off on
> it. Probably the & is not correct in the IS_ERR call?
Yes, IS_ERR() was called with the wrong argument. I fixed it now.
Note that it's no branch to be merged t
Le 22/04/2017 à 08:08, Michael Ellerman a écrit :
"Naveen N. Rao" writes:
Excerpts from Christophe Leroy's message of April 21, 2017 18:32:
diff --git a/arch/powerpc/kernel/ftrace.c
b/arch/powerpc/kernel/ftrace.c
index 32509de6ce4c..06d2ac53f471 100644
--- a/arch/powerpc/kernel/ftrace.c
+++
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