From: KP Singh
Adds a callback which is called when a new program is attached
to a hook. The callback registered by the process_exection hook
checks if a program that has calls to a helper that requires pages to
be pinned (eg. krsi_get_env_var).
Signed-off-by: KP Singh
---
From: KP Singh
The LSM creates files in securityfs for each hook registered with the
LSM.
/sys/kernel/security/bpf/
The initialization of the hooks is done collectively in an internal
header "hooks.h" which results in:
* Creation of a file for the hook in the securityfs.
* Allocation of a
From: KP Singh
Add validation checks for the attachment of eBPF programs.
The following permissions are required:
- CAP_SYS_ADMIN to load eBPF programs
- CAP_MAC_ADMIN (to update the policy of an LSM)
- The securityfs file being a KRSI hook and writable (O_RDWR)
Signed-off-by: KP Singh
---
From: KP Singh
Allow the userspace to attach a newer version of a program without
having duplicates of the same program.
If BPF_F_ALLOW_OVERRIDE is passed, the attachment logic compares the
name of the new program to the names of existing attached programs. The
names are only compared till a
From: KP Singh
Pin the memory allocated to the the argv + envv for the new
process and passes it in the context to the eBPF programs attached to
the hook.
The get_user_pages_remote cannot be called from an eBPF helper because
the helpers run in atomic context and the get_user_pages_remote
On Tue, Sep 10, 2019 at 06:21:07AM +0200, Ahmed S. Darwish wrote:
>
> The commit b03755ad6f33 (ext4: make __ext4_get_inode_loc plug), [1]
> which was merged in v5.3-rc1, *always* leads to a blocked boot on my
> system due to low entropy.
>
> The hardware is not a VM: it's a Thinkpad E480
From: KP Singh
# Motivation
Signaling and mitigation are two key aspects of security which go
hand-in-hand. Signals provide the necessary context to narrow down a
malicious actor and are key to creating effective MAC policies to
mitigate/prevent the malicious actor.
One can obtain signals
From: KP Singh
The LSM can be enabled by:
- Enabling CONFIG_SECURITY_KRSI.
- Adding "krsi" to the CONFIG_LSM string.
Signed-off-by: KP Singh
---
MAINTAINERS| 5 +
security/Kconfig | 1 +
security/Makefile | 2 ++
security/krsi/Kconfig | 22
The pull request you sent on Tue, 10 Sep 2019 11:49:00 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git
> tags/ipc-fixes
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/3120b9a6a3f7487f96af7bd634ec49c87ef712ab
Thank you!
--
Deet-doot-dot,
On 9/10/19 12:50 PM, Andrey Ryabinin wrote:
For slab objects we memorize both alloc and free stacks. You'll never know in
advance what information will be usefull
to fix an issue, so it usually better to provide more information. I don't
think we should do anything different for pages.
On Tue, Sep 10, 2019 at 08:19:08AM +, Tony W Wang-oc wrote:
> All Zhaoxin newer CPUs support MCE that compatible with Intel's
> "Machine-Check Architecture", so add support for Zhaoxin MCE in
> mce/core.c.
>
> Signed-off-by: Tony W Wang-oc
> ---
> arch/x86/kernel/cpu/mce/core.c | 30
On Tue, Sep 10, 2019 at 1:40 PM Anson Huang wrote:
>
>
>
> > On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd wrote:
> > >
> > > Quoting Peng Fan (2019-08-27 01:17:50)
> > > > From: Peng Fan
> > > >
> > > > There is hardware issue that:
> > > > The output clock the LPCG cell will not turn back on as
Hi,
Changes since RFC:
- Extended the binding document's example
- Changed the API to dma_request_chan_by_domain(dev, mask)
- Fixed certain crash if the dev parameter would be NULL
- Add missing parenthesis in of_dma.c
- typo fix.
More and more SoC have more than one DMA controller integrated.
In case the channel is not requested via the slave API, use the
of_find_dma_domain() to see if a system default DMA controller is
specified.
Add new function which can be used by clients to request channels by mask
from their DMA domain controller if specified.
Client drivers can take advantage
Find the DMA domain controller of the client device by iterating up in
device tree looking for the closest 'dma-domain-controller' property.
If the client's node is not provided then check the DT root for the
controller.
Signed-off-by: Peter Ujfalusi
---
drivers/dma/of-dma.c | 42
On systems where multiple DMA controllers available, non Slave (for example
memcpy operation) users can not be described in DT as there is no device
involved from the DMA controller's point of view, DMA binding is not usable.
However in these systems still a peripheral might need to be serviced by
Hi,
On 8/16/19 9:58 PM, Jarkko Sakkinen wrote:
> On Fri, Aug 16, 2019 at 01:12:00AM +0300, Denis Efremov wrote:
>> Update MAINTAINERS record to reflect that trusted.h
>> was moved to a different directory in commit 22447981fc05
>> ("KEYS: Move trusted.h to include/keys [ver #2]").
>>
>> Cc: Denis
arch/powerpc/kernel/ contains 7 files dedicated to kexec.
Move them into a dedicated subdirectory.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/Makefile | 16 +---
arch/powerpc/kernel/kexec/Makefile | 22 ++
Almost half of misc_32.S is dedicated to kexec.
Drop it into a dedicated kexec_32.S
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/Makefile | 1 +
arch/powerpc/kernel/kexec_32.S | 500 +
arch/powerpc/kernel/misc_32.S | 491
Hi,
On 8/13/19 10:20 AM, Linus Walleij wrote:
> On Tue, Aug 13, 2019 at 8:33 AM Denis Efremov wrote:
>
>> Update MAINTAINERS record to reflect the filename change
>> from physmap_of_versatile.c to physmap-versatile.c
>>
>> Cc: Boris Brezillon
>> Cc: Ricardo Ribalda Delgado
>> Cc: Linus
Make the dma-channel-mask to be usable for controllers with more than 32
channels.
Signed-off-by: Peter Ujfalusi
---
Documentation/devicetree/bindings/dma/dma-common.yaml | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git
Like paRAM slots, channels could be used by other cores and in this case
we need to make sure that the driver do not alter these channels.
Handle the generic dma-channel-mask property to mark channels in a bitmap
which can not be used by Linux and convert the legacy rsv_chans if it is
provided by
Hi,
Changes since v1:
- Extend the common dma-channel-mask to uint32-array to be usable for
controllers with more than 32 channels
- Use the dma-channel-mask instead custom property for available channels for
EDMA.
The original patch was part of the EDMA multicore usage series.
Rob: I'm not
Similarly to paRAM slots, channels can be used by other cores.
The common dma-channel-mask property can be used for specifying the
available channels.
Signed-off-by: Peter Ujfalusi
---
Documentation/devicetree/bindings/dma/ti-edma.txt | 6 ++
1 file changed, 6 insertions(+)
diff --git
On Sat, Sep 07, 2019 at 10:57:20PM +0200, Sandro Volery wrote:
> Fixed open parenthesis at the end of the line on line 327.
>
> Signed-off-by: Sandro Volery
> ---
> drivers/staging/wlan-ng/cfg80211.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git
On Tue, Sep 10, 2019 at 01:38:18PM +0200, Jean-Jacques Hiblot wrote:
>
> On 10/09/2019 13:26, Daniel Thompson wrote:
> >
> > > endmenu
> > > diff --git a/drivers/video/backlight/Makefile
> > > b/drivers/video/backlight/Makefile
> > > index 63c507c07437..2a67642966a5 100644
> > > ---
On Fri, Sep 06, 2019 at 03:06:03PM +0800, shifu0...@thundersoft.com wrote:
> + - ti,left-slot: - Sets TDM RX left time slots.
> + - ti,right-slot: - Sets TDM RX right time slots.
This looks like it's duplicating things that are normally done
with the set_tdm_slot() callback. Otherwise the
On 10/09/2019 13:26, Daniel Thompson wrote:
endmenu
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 63c507c07437..2a67642966a5 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -57,3 +57,4 @@
A few more comments...
On Sun, 2019-09-01 at 12:45 +, Jonas Karlman wrote:
> A decoded 8-bit 4:2:0 frame need memory for up to 448 macroblocks
> and is laid out in memory as follow:
>
> +---+
> > Y-plane 256 MBs |
> +---+
> > UV-plane 128 MBs |
>
On Tue, Sep 10, 2019 at 5:21 AM Ahmed S. Darwish wrote:
>
> The commit b03755ad6f33 (ext4: make __ext4_get_inode_loc plug), [1]
> which was merged in v5.3-rc1, *always* leads to a blocked boot on my
> system due to low entropy.
Exactly what is it that blocks on entropy? Nobody should do that
On Mon, Sep 09, 2019 at 06:22:42PM +0200, Thomas Bogendoerfer wrote:
> On Fri, 6 Sep 2019 16:02:24 +0300
> Mike Rapoport wrote:
>
> > I suspect that unaligned access comes from __page_to_pfn, can you please
> > check what scripts/fadd2line reports for kernel_init_free_pages+0xcc/0x138?
>
>
The '.exit' functions from 'pernet_operations' structure should be marked
as __net_exit, not __net_init.
Fixes: d862e5461423 ("net: ipv6: Implement /proc/net/icmp6.")
Signed-off-by: Christophe JAILLET
---
Untested, but using __net_exit looks consistent with other
pernet_operations.exit use case.
On Tue, Sep 10, 2019 at 12:59:45PM +0200, Jean-Jacques Hiblot wrote:
> Add DT binding for led-backlight.
>
> Signed-off-by: Jean-Jacques Hiblot
Reviewed-by: Daniel Thompson
> ---
> .../bindings/leds/backlight/led-backlight.txt | 28 +++
> 1 file changed, 28 insertions(+)
>
On Tue, Sep 10, 2019 at 07:11:26AM +0200, Sandro Volery LKML wrote:
> Wow... I checked, compiled and still sent the wrong thing again. I'm
> gonna have to give this up soon if i can't get it right.
>
The mistake was using gasket_page_table_num_simple_entries() instead
of
Dear Friend,
My Name Is Mr.Phillip Richead, Executive Director & Exchange Manager
of Africa Development Bank In Ouagadougou Burkina Faso,
I need your assistance to validate your name in our Bank System to
enable the Bank transfer the sum of $10.5Million unclaimed fund into
your nominated bank
On Tue, Sep 10, 2019 at 12:59:46PM +0200, Jean-Jacques Hiblot wrote:
> From: Tomi Valkeinen
>
> This patch adds a led-backlight driver (led_bl), which is similar to
> pwm_bl except the driver uses a LED class driver to adjust the
> brightness in the HW. Multiple LEDs can be used for a single
Hello Christian,
>> All: I plan to add the following text to the manual page:
>>
>>new_root and put_old may be the same directory. In particular,
>>the following sequence allows a pivot-root operation without need‐
>>ing to create and remove a temporary directory:
>>
On 9/10/19 12:31 PM, Vitaly Wool wrote:
With the original commit applied, z3fold_zpool_destroy() may
get blocked on wait_event() for indefinite time. Revert this
commit for the time being to get rid of this problem since the
issue the original commit addresses is less severe.
This reverts
On Tue, 10 Sep 2019 11:46:56 +0300
Sakari Ailus wrote:
> There are no in-kernel %p[fF] users left. Convert the traceevent tool,
> too, to align with the kernel.
>
> Signed-off-by: Sakari Ailus
> Cc: Steven Rostedt
> Cc: Arnaldo Carvalho de Melo
> Cc: Tzvetomir Stoyanov
> Cc:
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 77b4b5420422fc037d00b8f3f0e89b2262e4ae29
Gitweb:
https://git.kernel.org/tip/77b4b5420422fc037d00b8f3f0e89b2262e4ae29
Author:Thomas Gleixner
AuthorDate:Thu, 05 Sep 2019 23:15:08 +02:00
On Mon, Sep 09, 2019 at 11:10:06PM +, Haiyang Zhang wrote:
>
>
> > -Original Message-
> > From: Lorenzo Pieralisi
> > Sent: Wednesday, August 21, 2019 5:03 AM
> > To: Stephen Rothwell
> > Cc: Bjorn Helgaas ; Linux Next Mailing List > n...@vger.kernel.org>; Linux Kernel Mailing
Hello, Maintainers...
Would you please review this patch and share the feedback?
Thanks,
Austin Kim
2019년 9월 9일 (월) 오후 2:42, Austin Kim 님이 작성:
>
> The type of 'chan' is u32 which contain non-negative value.
> So 'chan < 0' is statment is always false.
>
> Remove unnecessary comparison statement
On Tue, Sep 10, 2019 at 12:27:27PM +0200, Michael Kerrisk (man-pages) wrote:
> Hello Eric,
>
> On 9/10/19 1:40 AM, Eric W. Biederman wrote:
>
> [...]
>
> >>> I have just spotted this conversation and I expect if you are going
> >>> to use this example it is probably good to document what is
On Tue, Sep 10, 2019 at 01:04:51PM +0200, Michal Hocko wrote:
> On Tue 10-09-19 18:58:05, Yunsheng Lin wrote:
> > On 2019/9/10 17:31, Greg KH wrote:
> > > On Tue, Sep 10, 2019 at 02:43:32PM +0800, Yunsheng Lin wrote:
> > >> On 2019/9/9 17:53, Greg KH wrote:
> > >>> On Mon, Sep 09, 2019 at
Hi
On 9/8/2019 11:35 AM, Borislav Petkov wrote:
On Sun, Sep 08, 2019 at 10:16:02AM +0200, Borislav Petkov wrote:
On Sun, Sep 08, 2019 at 10:58:31AM +0300, Hawa, Hanna wrote:
Better use WARN_ON_ONCE() to avoid flooding.
In case of two drivers using this function with wrong error count, only
On Tue 10-09-19 18:58:05, Yunsheng Lin wrote:
> On 2019/9/10 17:31, Greg KH wrote:
> > On Tue, Sep 10, 2019 at 02:43:32PM +0800, Yunsheng Lin wrote:
> >> On 2019/9/9 17:53, Greg KH wrote:
> >>> On Mon, Sep 09, 2019 at 02:04:23PM +0800, Yunsheng Lin wrote:
> Currently a device does not belong
On Tue 10-09-19 18:40:12, Yunsheng Lin wrote:
> On 2019/9/10 15:24, Michal Hocko wrote:
> > Our emails crossed, sorry about that.
> >
> > On Tue 10-09-19 15:08:20, Yunsheng Lin wrote:
> >> On 2019/9/10 2:50, Michal Hocko wrote:
> >>> On Mon 09-09-19 14:04:23, Yunsheng Lin wrote:
> > [...]
>
On 2019/09/09 22:04, Michal Hocko wrote:
> On Mon 09-09-19 21:40:24, Tetsuo Handa wrote:
>> On 2019/09/09 20:36, Michal Hocko wrote:
>>> This is not an improvement. It detaches the oom report and tasks_dump
>>> for an arbitrary amount of time because the worder context might be
>>> stalled for an
If the LED is acquired by a consumer device with devm_led_get(), it is
automatically released when the device is detached.
Signed-off-by: Jean-Jacques Hiblot
Acked-by: Pavel Machek
---
drivers/leds/led-class.c | 42
include/linux/leds.h | 2 ++
2
Add DT binding for led-backlight.
Signed-off-by: Jean-Jacques Hiblot
---
.../bindings/leds/backlight/led-backlight.txt | 28 +++
1 file changed, 28 insertions(+)
create mode 100644
Documentation/devicetree/bindings/leds/backlight/led-backlight.txt
diff --git
This series aims to add a led-backlight driver, similar to pwm-backlight,
but using a LED class device underneath.
A few years ago (2015), Tomi Valkeinen posted a series implementing a
backlight driver on top of a LED device:
https://patchwork.kernel.org/patch/7293991/
From: Tomi Valkeinen
This patch adds basic support for a kernel driver to get a LED device.
This will be used by the led-backlight driver.
Only OF version is implemented for now, and the behavior is similar to
PWM's of_pwm_get() and pwm_put().
Signed-off-by: Tomi Valkeinen
Signed-off-by:
From: Tomi Valkeinen
This patch adds a led-backlight driver (led_bl), which is similar to
pwm_bl except the driver uses a LED class driver to adjust the
brightness in the HW. Multiple LEDs can be used for a single backlight.
Signed-off-by: Tomi Valkeinen
Signed-off-by: Jean-Jacques Hiblot
On 2019/9/10 17:31, Greg KH wrote:
> On Tue, Sep 10, 2019 at 02:43:32PM +0800, Yunsheng Lin wrote:
>> On 2019/9/9 17:53, Greg KH wrote:
>>> On Mon, Sep 09, 2019 at 02:04:23PM +0800, Yunsheng Lin wrote:
Currently a device does not belong to any of the numa nodes
(dev->numa_node is
Add some properties for pcf85263/pcf85363 as follows:
- nxp,rtc-interrupt-type: integer type
- nxp,rtc-interrupt-output-pin: string type
- quartz-load-femtofarads: integer type
- nxp,quartz-drive-strength: integer type
- nxp,quartz-low-jitter: bool type
- wakeup-source: bool type
Add some features as follow:
- Set quartz oscillator load capacitance by DT
(generate more accuracy frequency)
- Set quartz oscillator drive control by DT
(reduce/increase the current consumption)
- Set low jitter mode by DT
(improve jitter performance)
- Set
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out mathematical
helpers.
Signed-off-by: Andy Shevchenko
---
fs/nfs/callback_proc.c| 1 +
include/linux/bitops.h| 3 +-
include/linux/dcache.h
On 9/9/19 4:07 PM, Vlastimil Babka wrote:
> On 9/9/19 10:24 AM, walter-zh...@mediatek.com wrote:
>> From: Walter Wu
>>
>> This patch is KASAN report adds the alloc/free stacks for page allocator
>> in order to help programmer to see memory corruption caused by page.
>>
>> By default, KASAN
Hello!
On 10.09.2019 13:38, Ivan Khoronzhuk wrote:
echo should be replaced on echo -e to handle \n correctly, but instead,
s/on/with/?
replace it on printf as some systems can't handle echo -e.
Likewise?
Signed-off-by: Ivan Khoronzhuk
[...]
MBR, Sergei
On Tue, Sep 10, 2019 at 10:19:38AM +0100, Greg KH wrote:
On Tue, Sep 10, 2019 at 08:01:35AM +0200, Christoph Hellwig wrote:
Please stop selectively backporting parts of random series. We'll
need to the full series from Al in -stable instead.
Yeah, I'll pick this whole series up soon. Sasha,
Gregory Farnum writes:
> On Mon, Sep 9, 2019 at 4:15 AM Luis Henriques wrote:
>>
>> "Jeff Layton" writes:
>>
>> > On Mon, 2019-09-09 at 11:28 +0100, Luis Henriques wrote:
>> >> OSDs are able to perform object copies across different pools. Thus,
>> >> there's no need to prevent
Ravi Bangoria wrote:
If watchpoint exception is generated by larx/stcx instructions, the
reservation created by larx gets lost while handling exception, and
thus stcx instruction always fails. Generally these instructions are
used in a while(1) loop, for example spinlocks. And because stcx
never
Hi Benoit,
On 9/9/19 6:27 PM, Benoit Parrot wrote:
> This patch series is a collection of patches we have been carrying for a
> while.
>
> A few patches do fix actual bug and v4l2-compliance errors/warnings.
> Other are drivers re-work to simplify/clarify the code for easier
> maintenance.
Can
On 2019/9/10 15:24, Michal Hocko wrote:
> Our emails crossed, sorry about that.
>
> On Tue 10-09-19 15:08:20, Yunsheng Lin wrote:
>> On 2019/9/10 2:50, Michal Hocko wrote:
>>> On Mon 09-09-19 14:04:23, Yunsheng Lin wrote:
> [...]
Even if a device's numa node is not specified, the device
It can overlap with CFLAGS used for libraries built with gcc if
not now then in next patches. Correct it here for simplicity.
Signed-off-by: Ivan Khoronzhuk
---
samples/bpf/Makefile | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/samples/bpf/Makefile
Don't list userspace "cookie_uid_helper_example" object in list for
bpf objects.
per_socket_stats_example-opjs is used to list additional dependencies
for user space binary from hostprogs-y list. Kbuild system creates
rules for objects listed this way anyway and no need to worry about
this.
This series contains mainly fixes/improvements for cross-compilation
but not only, tested for arm, arm64, but intended for any arch.
Also verified on native build (not cross compilation) for x86_64
and arm.
Initial RFC link:
https://lkml.org/lkml/2019/8/29/1665
Prev. version:
The makefile.prog is added only, will be used in sample/bpf/Makefile
later in order to switch cross-compiling on CC from HOSTCC.
The HOSTCC is supposed to build binaries and tools running on the host
afterwards, in order to simplify build or so, like "fixdep" or else.
In case of cross compiling
The main reason for that - HOSTCC and CC have different aims.
It was tested for arm cross compilation, based on linaro toolchain,
but should work for others.
In order to split cross compilation (CC) with host build (HOSTCC),
lets base bpf samples on Makefile.progs. It allows to cross-compile
The kernel headers are reused from samples bpf, and autoconf.h is not
enough to reflect complete arch configuration for clang. But CLANG-bpf
cmds are sensitive for assembler part taken from linux headers and -D
vars, usually used in CFLAGS, should be carefully added for each arch.
For that, for
Drop inclusion for bpf_load -I$(objtree)/usr/include as it
is included for all objects anyway, with above line:
KBUILD_HOSTCFLAGS += -I$(objtree)/usr/include
Signed-off-by: Ivan Khoronzhuk
---
samples/bpf/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
No need in hacking HOSTCC to be cross-compiler any more, so drop
this trick and use CC for HDR_PROBE
Signed-off-by: Ivan Khoronzhuk
---
samples/bpf/Makefile | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index
Basically it only enables that was added by previous couple fixes.
For sure, just make tools/include to be included after sysroot
headers.
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
make samples/bpf/ SYSROOT="path/to/sysroot"
Sysroot contains correct libs installed and its headers
In case of LDFLAGS and EXTRA_CC/CXX flags there is no way to pass them
correctly to build command, for instance when --sysroot is used or
external libraries are used, like -lelf, wich can be absent in
toolchain. This is used for samples/bpf cross-compiling allowing to
get elf lib from sysroot.
echo should be replaced on echo -e to handle \n correctly, but instead,
replace it on printf as some systems can't handle echo -e.
Signed-off-by: Ivan Khoronzhuk
---
samples/bpf/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/bpf/Makefile
For cross compiling the target triple can be inherited from
cross-compile prefix as it's done in CLANG_FLAGS from kernel makefile.
So copy-paste this decision from kernel Makefile.
Signed-off-by: Ivan Khoronzhuk
---
samples/bpf/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
On Wed, Sep 4, 2019 at 6:26 PM Dmitry Torokhov
wrote:
> It is not used outside gpiolib-acpi.c module, so there is no need to
> export it.
>
> Signed-off-by: Dmitry Torokhov
Patch applied with the ACKs.
Yours,
Linus Walleij
On Wed, Sep 4, 2019 at 12:18 AM Dmitry Torokhov
wrote:
> We should only try to execute fallback quirks handling when previous
> call returned -ENOENT, and not when we did not get -EPROBE_DEFER.
> The other errors should be treated as hard errors: we did find the GPIO
> description, but for some
Quoting Dmitry Osipenko (2019-08-11 14:00:29)
> A proper External Memory Controller clock rounding and parent selection
> functionality is required by the EMC drivers, it is not available using
> the generic clock implementation because only the Memory Controller driver
> is aware of what clock
On Tue, Sep 10, 2019 at 12:30:06PM +0200, Oscar Salvador wrote:
>
> This patchset was based on Naoya's hwpoison rework [1], so thanks to him
> for the initial work.
>
> This patchset aims to fix some issues laying in soft-offline handling,
> but it also takes the chance and takes some further
This patchset was based on Naoya's hwpoison rework [1], so thanks to him
for the initial work.
This patchset aims to fix some issues laying in soft-offline handling,
but it also takes the chance and takes some further steps to perform
cleanups and some refactoring as well.
- Motivation:
From: Naoya Horiguchi
The argument @flag no longer affects the behavior of soft_offline_page()
and its variants, so let's remove them.
Signed-off-by: Naoya Horiguchi
Signed-off-by: Oscar Salvador
---
drivers/base/memory.c | 2 +-
include/linux/mm.h| 2 +-
mm/madvise.c | 2 +-
From: Naoya Horiguchi
memory_failure() forks to memory_failure_hugetlb() for hugetlb pages,
so a PageHuge() check after the fork should not be necessary.
Signed-off-by: Oscar Salvador
Signed-off-by: Naoya Horiguchi
Reviewed-by: Anshuman Khandual
---
mm/memory-failure.c | 5 +
1 file
From: Naoya Horiguchi
Now there's no user of MF_COUNT_INCREASED, so we can safely remove
it from all calling points.
Signed-off-by: Naoya Horiguchi
Signed-off-by: Oscar Salvador
---
include/linux/mm.h | 7 +++
mm/memory-failure.c | 16 +++-
2 files changed, 6 insertions(+),
With the original commit applied, z3fold_zpool_destroy() may
get blocked on wait_event() for indefinite time. Revert this
commit for the time being to get rid of this problem since the
issue the original commit addresses is less severe.
This reverts commit
Place the THP's page handling in a helper and use it
from both hard and soft-offline machinery, so we get rid
of some duplicated code.
Signed-off-by: Oscar Salvador
---
mm/memory-failure.c | 48 ++--
1 file changed, 22 insertions(+), 26 deletions(-)
When soft offlining a free hugtlb, try first to allocate a new hugetlb
to the pool and pass the old state to the new one by move_hugetlb_state().
Either we succeed or not, we dissolve the poisoned hugetlb page.
Worst-scenario case is that we cannot allocate a new fresh hugetlb page
as a
soft_offline_huge_page and __soft_offline_page share quite some code,
and it can be re-joined into one single function without losing neither
functionatilty nor readibility.
This allows us of getting rid of quite some duplicated code.
Signed-off-by: Oscar Salvador
---
mm/memory-failure.c | 145
This patch changes the way we set and handle in-use poisoned pages.
Until now, poisoned pages were released to the buddy allocator, trusting
that the checks that take place prior to hand the page to userspace would
act as a safe net and would skip that page.
This has proved to be wrong, as we got
From: Naoya Horiguchi
Currently madvise_inject_error() pins the target via get_user_pages_fast.
The call to get_user_pages_fast is only to get the respective page
of a given address, but it is the job of the memory-poisoning handler
to deal with races, so drop the refcount grabbed by
From: Naoya Horiguchi
Another memory error injection interface debugfs:hwpoison/corrupt-pfn
also takes bogus refcount for hwpoison_filter(). It's justified
because this does a coarse filter, expecting that memory_failure()
redoes the check for sure.
Signed-off-by: Naoya Horiguchi
Le 10/09/2019 à 12:24, Ravi Bangoria a écrit :
I've prepared my patch on top of Christophe's patch as it's easy
to change stepping_handler() rather than hw_breakpoint_handler().
2nd patch is the actual fix.
Anyway, my patch is already commited on powerpc/next
take_page_off_buddy will be used to take a page meant to be poisoned
off the buddy allocator.
take_page_off_buddy calls break_down_buddy_pages, which will split a
higher-order page in case our page belongs to one.
Once we grab the page, we call page_set_poison to set it as poisoned
and grab a
Hi Marc,
> -Original Message-
> From: Marc Zyngier
> Sent: Monday, September 9, 2019 7:25 PM
> To: Jianyong Wu (Arm Technology China)
> Cc: net...@vger.kernel.org; pbonz...@redhat.com;
> sean.j.christopher...@intel.com; richardcoch...@gmail.com; Mark Rutland
> ; Will Deacon ; Suzuki
>
> -Original Message-
> From: Kirill A. Shutemov
> Sent: Tuesday, 10 September 2019 8:15 PM
> To: Alastair D'Silva
> Cc: alast...@d-silva.org; Andrew Morton ;
> David Hildenbrand ; Oscar Salvador
> ; Michal Hocko ; Pavel Tatashin
> ; Wei Yang ;
> Dan Williams ; Qian Cai ; Jason
>
Hello Eric,
On 9/10/19 1:40 AM, Eric W. Biederman wrote:
[...]
>>> I have just spotted this conversation and I expect if you are going
>>> to use this example it is probably good to document what is going
>>> on so that people can follow along.
>>
>> (Sounds reasonable.)
>>
> chdir(rootfs)
> -Original Message-
> From: David Hildenbrand
> Sent: Tuesday, 10 September 2019 5:46 PM
> To: Alastair D'Silva ; alast...@d-silva.org
> Cc: Andrew Morton ; Oscar Salvador
> ; Michal Hocko ; Pavel Tatashin
> ; Wei Yang ;
> Dan Williams ; Qian Cai ; Jason
> Gunthorpe ; Logan Gunthorpe ;
On 9/10/19 3:26 AM, Pengfei Li wrote:
KMALLOC_DMA will be initialized only if KMALLOC_NORMAL with
the same index exists.
And kmalloc_caches[KMALLOC_NORMAL][0] is always NULL.
Therefore, the loop that initializes KMALLOC_DMA should start
at 1 instead of 0, which will reduce 1 meaningless
If watchpoint exception is generated by larx/stcx instructions, the
reservation created by larx gets lost while handling exception, and
thus stcx instruction always fails. Generally these instructions are
used in a while(1) loop, for example spinlocks. And because stcx
never succeeds, it loops
On Tue, Sep 10, 2019 at 11:38:37AM +0200, Arnd Bergmann wrote:
> On Tue, Sep 10, 2019 at 11:23 AM Andrew Murray wrote:
>
> >
> > > arch/arm64/include/asm/cmpxchg.h | 15 ---
> > > 1 file changed, 8 insertions(+), 7 deletions(-)
> > >
> > > diff --git
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