It seems that at some point, someone made the assumption that the UART
Interrupt ID Register was a bitfield and started to check if certain
bits where set.
Actually however the register contains interrupt ID's where only the MSB
seems to be used singular and the rest share at least one bit. Thus
d
Hi,
On Wed, Mar 29, 2017 at 10:10 AM, Olliver Schinagl
wrote:
> Hey Doug,
>
> On 29-03-17 17:50, Doug Anderson wrote:
>>
>> Hi,
>>
>> On Wed, Mar 29, 2017 at 3:04 AM, Olliver Schinagl
>> wrote:
>>>
>>> Commit 424d79183af0 ("serial: 8250_dw: Avoid "too much work" from bogus
>>> rx timeout interru
Some very minor code cleanups, such as including the bitops header for
DW_UART_MCR_SIRE, use the BIT() macro as suggested by checkpatch and
removed a white space to match other invocations.
Signed-off-by: Olliver Schinagl
---
Changes since v1:
Split up these non-code changing changes into a sep
On Wed, Mar 29, 2017 at 04:33:55PM +0100, Colin King wrote:
> From: Colin Ian King
>
> Rather than assign the positive errno values to ret and then
> checking if it is positive and flip the sign, just return the
> errno value.
>
> Detected by CoverityScan, CID#986649 ("Logically Dead Code")
>
>
Checkpatch emits WARNING: Avoid multiple line dereference.
Trivial indentation improvement helps fix the checkpatch warning.
Signed-off-by: Prasant Jalan
---
drivers/staging/rtl8712/rtl871x_xmit.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/r
Hi Felix,
On 03/29/2017 04:26 PM, Felix Brack wrote:
> Hello Jacek,
>
> On 08.02.2017 20:42, Jacek Anaszewski wrote:
>> Hi Felix,
>>
>> On 02/08/2017 05:12 PM, Felix Brack wrote:
>>> Hello Jacek,
>>>
>>> On 07.02.2017 21:45, Jacek Anaszewski wrote:
Hi Felix,
Thanks for the patch.
>
The driver contains compatible strings for different models, but the DT
binding doc only lists one of them. Add the remaining to the document.
Signed-off-by: Javier Martinez Canillas
---
.../devicetree/bindings/input/touchscreen/silead_gsl1680.txt | 7 ++-
1 file changed, 6 insertions
On Wed, Mar 29, 2017 at 11:15 AM, Kees Cook wrote:
> +/*
> + * Build "write rarely" infrastructure for flipping memory r/w
> + * on a per-CPU basis.
> + */
> +#ifndef CONFIG_HAVE_ARCH_RARE_WRITE
> +# define __wr_rare
> +# define __wr_rare_type
> +# define __rare_write(__var, __val)(__var = (__
Based on PaX's x86 pax_{open,close}_kernel() implementation, this
allows HAVE_ARCH_RARE_WRITE to work on x86.
There is missing work to sort out some header file issues where preempt.h
is missing, though it can't be included in pg_table.h unconditionally...
some other solution will be needed, perha
This adds the memory domain (on non-LPAE) to the PMD and PTE dumps. This
isn't in the regular PMD bits because I couldn't find a clean way to
fall back to retain some of the PMD bits when reporting PTE. So this is
special-cased currently.
New output example:
---[ Modules ]---
0x7f00-0x7f0
This adds the WRITE_RARE_WRITE test to validate variables marked with
__wr_rare.
Signed-off-by: Kees Cook
---
drivers/misc/lkdtm.h | 1 +
drivers/misc/lkdtm_core.c | 1 +
drivers/misc/lkdtm_perms.c | 19 ++-
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/
Some structures that are intended to be made write-rarely are designed to
be linked by lists. As a result, there need to be rare_write()-supported
linked list primitives.
As found in PaX, this adds list management helpers for doing updates to
rarely-changed lists.
Signed-off-by: Kees Cook
---
i
Based on grsecurity's ARM pax_{open,close}_kernel() implementation, this
allows HAVE_ARCH_RARE_WRITE to work on ARM.
Signed-off-by: Kees Cook
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/domain.h | 3 ++-
arch/arm/include/asm/pgtable.h | 27 +++
3 fil
This creates DOMAIN_WR_RARE for the kernel's .rodata section, separate
from DOMAIN_KERNEL to avoid predictive fetching in device memory during
a DOMAIN_MANAGER transition.
TODO: handle kernel module vmalloc memory, which needs to be marked as
DOMAIN_WR_RARE too, for module .rodata sections.
Signe
As found in PaX, mark struct cftype with __do_const and add helpers
to deal with rare writes. This is a more complex example of a write-rarely
structure, which needs to use list helpers and blocks of begin/end pairs
to perform the needed updates.
With this change and the constify plugin enabled, t
This is a port of the PaX/grsecurity constify plugin. However, it has
the automatic function-pointer struct detection temporarily disabled. As
a result, this will only recognize the __do_const annotation, which
makes all instances of a marked structure read-only. The rare_write()
infrastructure can
Several types of data storage exist in the kernel: read-write data (.data,
.bss), read-only data (.rodata), and RO-after-init. This introduces the
infrastructure for another type: write-rarely, which is intended for data
that is either only rarely modified or especially security-sensitive. The
goal
This is take 2 of an RFC series to demonstrate a possible infrastructure
for the "write rarely" memory storage type in the kernel (patch 1). The
intent is to further reduce the internal attack surface of the kernel
by making more variables read-only while "at rest". This is heavily
based on the "__
On Wed, Mar 29, 2017 at 10:39:11AM -0700, Doug Berger wrote:
> On 03/29/2017 03:13 AM, Mark Rutland wrote:
> >> +static int dump_gisb_error(struct notifier_block *self, unsigned long v,
> >> + void *p)
> >> + return 0;
> >
> > I think this should be NOTIFY_OK.
> >
> I used
This is a simple example a register/unregister case for __wr_rare markings,
which only needs a simple rare_write() call to make updates.
Signed-off-by: Kees Cook
---
net/core/sock_diag.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/sock_diag.c b/net/core/soc
Set MMC_CAP_AGGRESSIVE_PM for BYT-related Intel SD card
controllers.
Signed-off-by: Azhar Shaikh
---
Changes in v2:
- Rebased the patch on top of 'next' branch.
- No code change.
drivers/mmc/host/sdhci-acpi.c | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/
Instead of performing full initialization of the completion structure
on each transfer in scpi_send_message(), we initialize it at boot time
(more specifically, in the relevant probe() function) and use
reinit_completion() to reset ->done counter on each message transfer
thus saving a little bit of
Set MMC_CAP_AGGRESSIVE_PM for BYT-related Intel SD card
controllers.
Signed-off-by: Azhar Shaikh
---
Changes in v2:
- Rebased the patch on top of 'next' branch.
- No code change.
drivers/mmc/host/sdhci-pci-core.c | 7 +++
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/dri
Everything but the USER domain is the same with CONFIG_CPU_SW_DOMAIN_PAN
or not. This extracts the differences for a common DACR_INIT macro so it
is easier to make future changes (like adding the WR_RARE domain).
Signed-off-by: Kees Cook
---
arch/arm/include/asm/domain.h | 14 +++---
1 f
My Xonar DG SI card is showing up in lspci but no module is loaded for
it.
The patch just adds a new value with card's PCI ID to oxygen_ids array.
Signed-off-by: Eugene Ganeev
---
sound/pci/oxygen/oxygen.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci
On Wed, Mar 29, 2017 at 11:19:49AM +0200, Peter Zijlstra wrote:
> On Wed, Mar 29, 2017 at 10:59:28AM +0200, Jesper Dangaard Brouer wrote:
> > On Wed, 29 Mar 2017 10:12:19 +0200
> > Peter Zijlstra wrote:
> > > No, that's horrible. Also, wth is this about? A memory allocator that
> > > needs in_nmi(
* Randy Dunlap wrote:
> On 03/28/17 10:17, Radu Rendec wrote:
> > Hi,
> >
> > I'm trying to assess the performance impact of enabling PARAVIRT (and
> > XEN) in a custom kernel configuration. I came across a very old thread
> > (https://lkml.org/lkml/2009/5/13/449) on this topic and the conclusi
On 29/03/17 18:43, Jassi Brar wrote:
> Currently two threads, wait on blocking requests, could wake up for
> completion of request of each other as ...
>
> Thread#1(T1) Thread#2(T2)
> mbox_send_message mbox_send_message
> |
On Wed, 2017-03-29 at 13:15 +0200, Jan Kara wrote:
> On Tue 21-03-17 14:46:53, Jeff Layton wrote:
> > On Tue, 2017-03-21 at 14:30 -0400, J. Bruce Fields wrote:
> > > On Tue, Mar 21, 2017 at 01:23:24PM -0400, Jeff Layton wrote:
> > > > On Tue, 2017-03-21 at 12:30 -0400, J. Bruce Fields wrote:
> > >
From: Jeremy Kerr
Add the initial fsi slave device, which is private to the core code.
This will be a child of the master, and parent to endpoint devices.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 10 ++
1 file cha
From: Jeremy Kerr
When a new fsi master is added, we will need to scan its links, and
slaves attached to those links. This change introduces a little shell to
iterate the links, which we will populate with the actual slave scan in
a later change.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris
From: Jeremy Kerr
Add some helpers for the crc checks for the slave configuration table.
This works 4-bits-at-a-time, using a simple table approach.
We will need this in the FSI core code, as well as any master
implementations that need to calculate CRCs in software.
We add this to the fsi code
From: Jeremy Kerr
Add a `struct fsi_master` to represent a FSI master controller.
FSI master drivers register one of these structs to provide
device-specific of the standard operations: read/write/term/break and
link control.
Includes changes from Edward A. James & Jeremy Kerr
.
Signed-off-by
From: Jeremy Kerr
This change adds a 'raw' file for reads & writes, and a 'term' file for
the TERM command, and a 'break' file for issuing a BREAK.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c | 116
Sure, I have a 2-socket server with 16 threads each. I take one CPU
offline in socket 2, so I've 16 threads on socket 1, 15 in socket 2. In
total, 31 threads so requesting 31 vectors.
Currently, vecs_per_node is calculated in the first iteration as 31 / 2, so 15.
ncpus of socket 1 is 16. cpus_
From: Chris Bostic
Set CFAM to appropriate ID so that the controlling master can manage
link memory ranges. Add slave engine register definitions.
Includes changes from Jeremy Kerr .
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core
On Fri, Mar 17, 2017 at 02:55:33PM +0800, Wei Wang wrote:
> On 03/17/2017 05:28 AM, Andrew Morton wrote:
> > On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang wrote:
> >
> > > From: Liang Li
> > >
> > > This patch adds a function to provides a snapshot of the present system
> > > unused pages. An imp
From: Jeremy Kerr
This change introduces the fsi device API: simple read, write and peek
accessors for the devices' address spaces.
Includes contributions from Chris Bostic
and Edward A. James .
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off
From: Chris Bostic
Enable each link and send a break command, and try to detect a slave by
reading from the SMODE register.
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 37 +++--
1 file changed, 35 insertions(+), 2 deleti
From: Jeremy Kerr
Now that we have fsi_slave devices, scan each for endpoints, and
register them on the fsi bus.
Includes contributions from Chris Bostic
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 127
From: Jeremy Kerr
Implement fsi_slave_init: if we can read a chip ID, create fsi_slave
devices and register with the driver core.
Includes changes from Chris Bostic .
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 66 +
From: Chris Bostic
Allow a master to undo a previous scan. Should a master scan a bus
twice it will need to ensure it doesn't double register any
previously detected device.
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 40 ++
On Wed, Mar 29, 2017 at 05:37:49PM +0200, Laszlo Ersek wrote:
> On 03/29/17 16:48, Christoffer Dall wrote:
> > On Wed, Mar 29, 2017 at 10:36:51PM +0800, gengdongjiu wrote:
> >> 2017-03-29 18:36 GMT+08:00, Achin Gupta :
>
> >>> Qemu is essentially fulfilling the role of secure firmware at the
> >>>
From: Chris Bostic
Add fsi master gpio device tree binding documentation
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
.../devicetree/bindings/fsi/fsi-master-gpio.txt| 24 ++
1 file changed, 24 insertions(+)
create mode 100644 Documentation/devicetree/bi
From: Jeremy Kerr
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c | 27 +++---
include/trace/events/fsi.h | 127 +
2 files changed, 148 insertions(+), 6 deletions(-)
create mode
From: Jeremy Kerr
This change adds a 'raw' file for reads & writes, and a 'term' file for
the TERM command, and a 'break' file for issuing a BREAK.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c | 116
From: Jeremy Kerr
This change implements error handling in the FSI core, by cleaning up
and retrying failed operations, using the SISC, TERM and BREAK
facilities.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c | 121 ++
From: Chris Bostic
Implement a FSI master using GPIO. Will generate FSI protocol for
read and write commands to particular addresses. Sends master command
and waits for and decodes a slave response.
Includes changes from Edward A. James and Jeremy
Kerr .
Signed-off-by: Edward A. James
Signe
On Wed, Mar 29, 2017 at 5:04 PM, Sudeep Holla wrote:
>
> On 28/03/17 19:20, Jassi Brar wrote:
>> Hi Sudeep,
>>
>> On Tue, Mar 21, 2017 at 5:00 PM, Sudeep Holla wrote:
>>> There exists a race when msg_submit return immediately as there was an
>>> active request being processed which may have compl
On Wed, Mar 29, 2017 at 08:15:50PM +0300, Sagi Grimberg wrote:
>
> > The number of vectors to assign needs to be adjusted for each node such
> > that it doesn't exceed the number of CPUs in that node. This patch
> > recalculates the vector assignment per-node so that we don't try to
> > assign mor
From: Chris Bostic
Add info for sysfs scan file in Documentaiton ABI/testing
Signed-off-by: Chris Bostic
---
Documentation/ABI/testing/sysfs-bus-fsi | 6 ++
1 file changed, 6 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-bus-fsi
diff --git a/Documentation/ABI/testing/s
From: Chris Bostic
Create a simple SCOM engine device driver that reads and writes
its control registers via an FSI bus.
Includes changes from Edward A. James .
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Edward A. James
Signed-off-by: Jeremy Kerr
---
drivers/fsi
From: Jeremy Kerr
For slaves that are behind a software-clocked master, we want FSI CFAMs
to run asynchronously to the FSI clock, so set up our slaves to be in
async mode.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c| 22 +-
dri
From: Chris Bostic
Add an engine driver to expose a "hub" FSI master - which has a set of
control registers in the engine address space, and uses a chunk of the
slave address space for actual FSI communication.
Additional changes from Jeremy Kerr .
Signed-off-by: Chris Bostic
Signed-off-by: Je
On Wed, Mar 29, 2017 at 10:06:25AM +0200, Michal Hocko wrote:
> On Tue 28-03-17 10:54:08, Matthew Wilcox wrote:
> > On Tue, Mar 28, 2017 at 09:55:13AM -0700, Davidlohr Bueso wrote:
> > > Do we have any consensus here? Keeping SHM_HUGE_* is currently
> > > winning 2-1. If there are in fact users out
From: Jeremy Kerr
Add trace points for key GPIO operations of the GPIO based FSI
master.
Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-master-gpio.c | 9 +
include/trace/events/fsi_master_gpio.h | 68 ++
2 files change
Implementation of the IBM 'Flexible Support Interface' (FSI) bus device
driver. FSI is a high fan out serial bus consisting of a clock and a serial
data line capable of running at speeds up to 166 MHz.
This set provides the basic framework to add FSI extensions to the
Linux bus and device models.
From: Jeremy Kerr
Introduce functions to perform reads/writes on the slave address space;
these simply pass the request on the slave's master with the correct
link and slave ID.
We implement these on top of similar helpers for the master.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
From: Chris Bostic
Add driver_register and driver_unregister wrappers for FSI.
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
---
drivers/fsi/fsi-core.c | 17 +
include/linux/fsi.h| 12
2 files changed, 29 insertions(+)
diff --git a/drivers/fsi/fsi-c
From: Jeremy Kerr
Allow drivers to access the slave address ranges.
Signed-off-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Signed-off-by: Chris Bostic
---
drivers/fsi/fsi-core.c | 26 --
include/linux/fsi.h| 12
2 files changed, 32 insertions(+), 6 de
Currently two threads, wait on blocking requests, could wake up for
completion of request of each other as ...
Thread#1(T1) Thread#2(T2)
mbox_send_message mbox_send_message
| |
V |
When ring size is small (<32 entries) making buffers smaller means a
full ring might not be able to hold enough buffers to fit a single large
packet.
Make sure a ring full of buffers is large enough to allow at least one
packet of max size.
Fixes: 2613af0ed18a ("virtio_net: migrate mergeable rx b
On 03/29/2017 03:13 AM, Mark Rutland wrote:
snip
>> +/*
>> + * Dump out gisb errors on die or panic.
>> + */
>> +static int dump_gisb_error(struct notifier_block *self, unsigned long v,
>> + void *p)
>> +{
>> +struct brcmstb_gisb_arb_device *gdev;
>> +
>> +/* iterate
A previous commit (below) adds a check for already probed interfaces to
Wacom's matching heuristic. Unfortunately this causes the Bamboo Pen
(CTL-460) to match itself to its 'ghost' touch interface. After
subsequent changes to the driver this match to the ghost causes the
kernel to crash. This patc
On Wed, Mar 29, 2017 at 08:15:04PM +0300, Michael S. Tsirkin wrote:
> When ring size is small (<32 entries) making buffers smaller means a
> full ring might not be able to hold enough buffers to fit a single large
> packet.
>
> Make sure a ring full of buffers is large enough to allow at least one
On Wed, Mar 29, 2017 at 05:13:54PM +0100, Lorenzo Pieralisi wrote:
> On Wed, Mar 29, 2017 at 03:52:47PM +0100, Marc Zyngier wrote:
> > On 29/03/17 14:00, Hanjun Guo wrote:
> > > On 03/29/2017 08:38 PM, Lorenzo Pieralisi wrote:
> > >> On Wed, Mar 29, 2017 at 07:52:48PM +0800, Hanjun Guo wrote:
> > >
On Wed, 2017-03-29 at 09:57 -0700, Daniel Cashman wrote:
> From: Dan Cashman
>
> Signed-off-by: Dan Cashman
As the TODO asks - please no whitespace cleanups yet. They make it
harder to keep other cleanups that fix (or mostly remove) code
applying.
Nothing wrong with the patch otherwise - but
Hi Ludovic,
Le 27/03/2017 à 14:54, Ludovic Barre a écrit :
> From: Ludovic Barre
>
> This patch set adds a SPI-NOR driver for stm32 QSPI controller.
> It is a specialized SPI interface for serial Flash devices.
> It supports 1 or 2 Flash device with single, dual and quad SPI Flash memories.
>
>
On Wed, Mar 29, 2017 at 9:46 PM, Daniel Baluta wrote:
> On Wed, Mar 29, 2017 at 3:33 PM, simran singhal
> wrote:
>> Use macro min() to get the minimum of two values for brevity and
>> readability.
>>
>> Signed-off-by: simran singhal
>> ---
>> drivers/iio/common/st_sensors/st_sensors_i2c.c | 2 +
Hi all,
Le 23/03/2017 à 00:33, Cyrille Pitchen a écrit :
> Hi all,
>
> based on git-hub/spi-nor and likely applicable on linux-next within the
> next few days.
>
>
> This new series of patchs aims to upgrade to spi-nor framework. We need to
> take into account latest SPI memories which cannot b
Hey Doug,
On 29-03-17 19:10, Olliver Schinagl wrote:
Hey Doug,
On 29-03-17 17:50, Doug Anderson wrote:
Hi,
On Wed, Mar 29, 2017 at 3:04 AM, Olliver Schinagl
wrote:
Commit 424d79183af0 ("serial: 8250_dw: Avoid "too much work" from
bogus rx timeout interrupt")
added a bit check with quite a w
On 03/29/2017 01:25 AM, Masami Hiramatsu wrote:
> On Wed, 29 Mar 2017 08:30:05 +0200
> Ingo Molnar wrote:
>>
>> * Masami Hiramatsu wrote:
>>
>>> @@ -1824,6 +1823,30 @@ void unregister_jprobes(struct jprobe **jps, int num)
>>> EXPORT_SYMBOL_GPL(unregister_jprobes);
>>>
>>> #ifdef CONFIG_KRETPR
From: Colin King
Date: Wed, 29 Mar 2017 18:05:40 +0100
> drivers/net/ieee802154/ca8210.c | 18 ++
This file doesn't exist in any of my trees.
On Wed, Mar 29, 2017 at 10:04 AM, Oleg Nesterov wrote:
>
> Oh, I agree, and let me repeat the 3rd time that I suggest to kill this
> helper and use syscall_get_return_value() in arch/x86/kernel/signal.c,
> it has no other callers.
That is probably fine, I'm just arguing against the suggested chan
On Tue, Mar 28, 2017 at 01:32:09PM +0800, Huang, Ying wrote:
> @@ -183,12 +184,53 @@ void __delete_from_swap_cache(struct page *page)
> ADD_CACHE_INFO(del_total, nr);
> }
>
> +#ifdef CONFIG_THP_SWAP_CLUSTER
> +int add_to_swap_trans_huge(struct page *page, struct list_head *list)
> +{
> +
The number of vectors to assign needs to be adjusted for each node such
that it doesn't exceed the number of CPUs in that node. This patch
recalculates the vector assignment per-node so that we don't try to
assign more vectors than there are CPUs. When that previously happened,
the cpus_per_vec
Hi,
On Tue, Mar 28, 2017 at 06:15:41PM +0200, Dmitry Vyukov wrote:
> The new header allows to wrap per-arch atomic operations
> and add common functionality to all of them.
I had a quick look at what it would take to have arm64 use this, and I
have a couple of thoughts.
> +static __always_inline
Hey Doug,
On 29-03-17 17:50, Doug Anderson wrote:
Hi,
On Wed, Mar 29, 2017 at 3:04 AM, Olliver Schinagl wrote:
Commit 424d79183af0 ("serial: 8250_dw: Avoid "too much work" from bogus rx timeout
interrupt")
added a bit check with quite a wide mask. To be concise with the other
similar calls i
When ring size is small (<32 entries) making buffers smaller means a
full ring might not be able to hold enough buffers to fit a single large
packet.
Make sure a ring full of buffers is large enough to allow at least one
packet of max size.
Fixes: 2613af0ed18a ("virtio_net: migrate mergeable rx b
virtio attempts to clear the MTU feature bit if the value is out of the
supported range, but this has no real effect since FEATURES_OK has
already been set.
Fix this up by checking the MTU in the new validate callback.
Fixes: 14de9d114a82 ("virtio-net: Add initial MTU advice feature")
Signed-off-
Some drivers can't support all features in all configurations. At the
moment we blindly set FEATURES_OK and later FAILED. Support this better
by adding a callback drivers can use to do some early checks.
Signed-off-by: Michael S. Tsirkin
---
drivers/virtio/virtio.c | 6 ++
include/linux/vi
* Dave Gerlach [170328 19:00]:
> Hi,
> This series contains the remaining code to enable suspend to mem and standby
> on
> am335x and am437x platforms. It depends on the ti-emif-sram series sent here
> [1].
Looks good to me in general. To remove the dependency, can some
of this be merged separa
Hi Boris,
On 03/29/2017 10:14 AM, Borislav Petkov wrote:
On Thu, Mar 02, 2017 at 10:16:05AM -0500, Brijesh Singh wrote:
From: Tom Lendacky
When a guest causes a NPF which requires emulation, KVM sometimes walks
the guest page tables to translate the GVA to a GPA. This is unnecessary
most of t
On Tue, Mar 28, 2017 at 01:32:04PM +0800, Huang, Ying wrote:
> @@ -527,6 +527,23 @@ static inline swp_entry_t get_swap_page(void)
>
> #endif /* CONFIG_SWAP */
>
> +#ifdef CONFIG_THP_SWAP_CLUSTER
> +static inline swp_entry_t get_huge_swap_page(void)
> +{
> + swp_entry_t entry;
> +
> + i
From: Colin Ian King
Ensure we don't end up with a null pointer dereferences by checking
for for allocation failures. Allocate by sizeof(*ptr) rather than
the type to fix checkpack warnings. Also merge multiple lines into
one line for the kmalloc call.
Detected by CoverityScan, CID#1422435 ("D
On 03/29, Linus Torvalds wrote:
>
> On Wed, Mar 29, 2017 at 9:55 AM, Oleg Nesterov wrote:
> >
> > Once again, it is only used in arch/x86/kernel/signal.c by do_signal() and
> > handle_signal(). We do not care if mmap() returns a valid pointer with the
> > high bit set, regs-ax can't be confused wi
On Wed, Mar 29, 2017 at 8:05 AM, Oleg Nesterov wrote:
> On 03/28, Oleg Nesterov wrote:
>>
>> On 03/28, Andy Lutomirski wrote:
>> >
>> > How about we store the syscall arch to be restored in task_struct
>> > along with restart_block?
>>
>> Yes, perhaps we will have to finally do this. Not really ni
On Wed, Mar 29, 2017 at 9:55 AM, Oleg Nesterov wrote:
>
> Once again, it is only used in arch/x86/kernel/signal.c by do_signal() and
> handle_signal(). We do not care if mmap() returns a valid pointer with the
> high bit set, regs-ax can't be confused with -ERESTART code.
Immaterial. If the funct
From: Dan Cashman
Signed-off-by: Dan Cashman
---
drivers/staging/media/atomisp/i2c/ap1302.c | 4 ++--
drivers/staging/media/atomisp/i2c/gc0310.c | 2 +-
drivers/staging/media/atomisp/i2c/gc2235.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/media/atomis
On Tue, Mar 28, 2017 at 01:32:02PM +0800, Huang, Ying wrote:
> @@ -5908,16 +5907,19 @@ void mem_cgroup_swapout(struct page *page,
> swp_entry_t entry)
> css_put(&memcg->css);
> }
>
> -/*
> - * mem_cgroup_try_charge_swap - try charging a swap entry
> +/**
> + * mem_cgroup_try_charg
On Wed, Mar 29, 2017 at 9:45 AM, Linus Torvalds
wrote:
> On Wed, Mar 29, 2017 at 9:33 AM, Oleg Nesterov wrote:
>>
>> Firstly, why do we need the IS_ERR_VALUE() check? This is only used by
>> do_signal/handle_signal, we do not care if it returns non-zero as long
>> as the value can't be confused w
On 03/29, Linus Torvalds wrote:
>
> On Wed, Mar 29, 2017 at 9:33 AM, Oleg Nesterov wrote:
> >
> > Firstly, why do we need the IS_ERR_VALUE() check? This is only used by
> > do_signal/handle_signal, we do not care if it returns non-zero as long
> > as the value can't be confused with -ERESTART.* co
On Wed, Mar 29, 2017 at 09:54:23AM +0800, Leo Yan wrote:
> Hi Mathieu,
>
> On Tue, Mar 28, 2017 at 10:50:10AM -0600, Mathieu Poirier wrote:
> > On Sun, Mar 26, 2017 at 02:23:14AM +0800, Leo Yan wrote:
>
> [...]
>
> > > +static void debug_force_cpu_powered_up(struct debug_drvdata *drvdata)
> > >
On Tue, Mar 28, 2017 at 01:32:01PM +0800, Huang, Ying wrote:
> @@ -499,6 +499,19 @@ config FRONTSWAP
>
> If unsure, say Y to enable frontswap.
>
> +config ARCH_USES_THP_SWAP_CLUSTER
> + bool
> + default n
This is fine.
> +config THP_SWAP_CLUSTER
> + bool
> + depends on
Linux refuses to boot if WP doesn't work okay, so tracking whether
it works serves no purpose. The only use I can see at all for wp_works_ok
is that it lets Xen bypass test_wp_bit(). If this is truly needed,
it could be more cleanly handled using X86_FEATURE_XENPV, but it
looks like Xen can handl
Hi Ingo-
Here it is rebased and split up.
--Andy
Andy Lutomirski (2):
x86/boot/32: Delete cpuinfo_x86::wp_works_ok
x86/boot/32: Rewrite test_wp_bit()
arch/x86/include/asm/processor.h | 2 --
arch/x86/kernel/cpu/proc.c | 5 ++---
arch/x86/kernel/setup.c | 2 --
arch/x86/mm
This code seems to be very old and has gotten only minor updates.
It's overcomplicated and has a bunch of comments that are, at best,
of purely historical interest. Nowadays we have a shiny function
probe_kernel_write() that does more or less exactly what we need.
Use it.
I switched the page that
On Wed, Mar 29, 2017 at 12:00 AM, Zhengyi Shen wrote:
> Add declaration for the error.h file to correct the sparse warnings.
>
> Sparse warnings:
> arch/x86/boot/compressed/error.c:8:6:
> warning: symbol 'warn' was not declared. Should it be static?
> arch/x86/boot/compressed/error.c:15:6:
On Wed, 2017-03-29 at 18:33 +0200, Hans de Goede wrote:
> HI,
>
> On 28-03-17 17:04, Andy Shevchenko wrote:
> > On Thu, 2017-03-23 at 13:21 -0700, Dmitry Torokhov wrote:
> > > If, while locating GPIOs by name, we get probe deferral, we should
> > > immediately report it to caller rather than tryin
On Wed, Mar 22, 2017 at 12:31:20AM +0800, fu@linaro.org wrote:
> From: Fu Wei
>
> On platforms booting with ACPI, architected memory-mapped timers'
> configuration data is provided by firmware through the ACPI GTDT
> static table.
>
> The clocksource architected timer kernel driver requires
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