tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/timers
head: d240e4b79fedad1346796b045286fad5ca70ada9
commit: 97d21003df3e7504c899b1701546f18ff475966f [8/11] x86/platform/UV: Add
check of TSC state set by UV BIOS
config: x86_64-randconfig-b0-10211156 (attached as .config)
This is the possible reason for different hard to reproduce
problems on my ARMv7-SMP test system.
The symptoms are in recent kernels imprecise external aborts,
and in older kernels various kinds of network stalls and
unexpected page allocation failures.
My testing indicates that the trouble start
This driver has been available on
https://github.com/iksaif/thinkpad-wmi for
a few year and is already deployed on large
fleets of thinkpad laptops.
The WMI interface is documented here:
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_pdf/hrdeploy_en.pdf
It mostly focused on changing B
On Fri, 20 Oct 2017 06:31:27 -0700
Kees Cook wrote:
> The jprobe subsystem is being removed, so convert to using kprobe instead.
>
Looks good to me:)
Acked-by: Masami Hiramatsu
Thanks,
> Cc: Masami Hiramatsu
> Signed-off-by: Kees Cook
> ---
> drivers/misc/lkdtm_core.c | 154
> ++
On Thu, 2017-10-19 at 12:58 -0400, Jerome Glisse wrote:
> On Thu, Oct 19, 2017 at 09:53:11PM +1100, Balbir Singh wrote:
> > On Thu, Oct 19, 2017 at 2:28 PM, Jerome Glisse wrote:
> > > On Thu, Oct 19, 2017 at 02:04:26PM +1100, Balbir Singh wrote:
> > > > On Mon, 16 Oct 2017 23:10:02 -0400
> > > > j
On Fri, Oct 20, 2017 at 09:48:16PM +0100, David Howells wrote:
> Alan Cox wrote:
>
> > There are a load of standard tools that use this so I think you are going
> > to need a whitelist. Can you at least log *which* MSR in the failing case
> > so a whitelist can be built over time ?
>
[...snip]
>
On Fri, Oct 20, 2017 at 8:20 PM, Matthew Wilcox wrote:
> On Fri, Oct 20, 2017 at 03:29:57PM -0700, Dan Williams wrote:
>> Ok, I'd also like to kill DAX support in the brd driver. It's a source
>> of complexity and maintenance burden for zero benefit. It's the only
>> ->direct_access() implementati
Value assigned to variable err is overwritten at line
562: err = priv->do_set_mode(dev, CAN_MODE_START); before
it can be used.
Also, notice that this code has been there since 2014.
Addresses-Coverity-ID: 1227031
Signed-off-by: Gustavo A. R. Silva
---
This code was tested by compilation only.
On Fri, Oct 20, 2017 at 03:29:57PM -0700, Dan Williams wrote:
> Ok, I'd also like to kill DAX support in the brd driver. It's a source
> of complexity and maintenance burden for zero benefit. It's the only
> ->direct_access() implementation that sleeps and it's the only
> implementation where there
On Fri, Oct 20, 2017 at 04:53:50PM -0700, Randy Dunlap wrote:
> From: Randy Dunlap
>
> Fix build when CONFIG_MODULES is not enabled.
> Fixes multiple build errors.
Thanks. I already sent a patch earlier.
-Andi
>
> Signed-off-by: Randy Dunlap
> Reported-by: kbuild test robot
> Cc: Andi Kleen
On Fri, Oct 20, 2017 at 4:25 PM, Paolo Bonzini wrote:
> On 21/10/2017 00:40, Paolo Bonzini wrote:
>> This breaks KVM completely on x86, due to two ioctls
>> (KVM_GET/SET_CPUID2) accessing the cpuid_entries field of struct
>> kvm_vcpu_arch.
>>
>> There's also another broken ioctl, KVM_XEN_HVM_CONFI
For the SEA notification, the two functions ghes_sea_add() and
ghes_sea_remove() are only called when CONFIG_ACPI_APEI_SEA
is defined. If not, it will return errors in the ghes_probe()
and not continue. If the probe is failed, the ghes_sea_remove()
also has no chance to be called. Hence, remove the
On 10/20/2017 03:54 PM, Jerry Hoemann wrote:
Correct test on SMBIOS table 219 Misc Features bits for UEFI supported.
Please explain in more detail. There is no table 219 in the SMBIOS
specification.
There is table 9, BIOS Characteristics Extension Byte 2, which specifies bit 3
as "UEFI Specifi
On 10/20/2017 03:54 PM, Jerry Hoemann wrote:
Add support for WDIOC_GETPRETIMEOUT ioctl so that user applications
can determine when the NMI should arrive.
Signed-off-by: Jerry Hoemann
---
drivers/watchdog/hpwdt.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/watchdog/hpw
On Sat, Oct 21, 2017 at 4:58 AM, Bart Van Assche wrote:
> Sorry but I'm not sure that's the best possible answer. In my opinion
> avoiding that completion objects have dependencies on other lock objects,
> e.g. by avoiding to wait on a completion object while holding a mutex, is a
> far superior s
On Thu, 19 Oct 2017, Arnd Bergmann wrote:
> Tomoyo uses an open-coded version of time_to_tm() to create a timestamp
> from the current time as read by get_seconds(). This will overflow and
> give wrong results on 32-bit systems in 2038.
>
> To correct this, this changes the code to use ktime_get_
On Thu, 19 Oct 2017, David Howells wrote:
> + if (efi_enabled(EFI_BOOT)) {
> + switch (mode) {
> + case efi_secureboot_mode_disabled:
> + pr_info("Secure boot disabled\n");
> + break;
> + case efi_secureboot_mode_enabl
On Thu, 19 Oct 2017, David Howells wrote:
> Disallow access to /proc/kcore when the kernel is locked down to prevent
> access to cryptographic data.
>
> Signed-off-by: David Howells
Reviewed-by: James Morris
I have to wonder, though, after everything is locked down, how easy will
it be for n
For the SEA notification, the two functions ghes_sea_add() and
ghes_sea_remove() are only called when CONFIG_ACPI_APEI_SEA
is defined. If not, it will return errors in the ghes_probe()
and not continue. If the probe is failed, the ghes_sea_remove()
also has no chance to be called. Hence, remove the
On Fri, Oct 20, 2017 at 12:59 PM, Kirill A. Shutemov
wrote:
> With boot-time switching between paging mode we will have variable
> MAX_PHYSMEM_BITS.
>
> Let's use the maximum variable possible for CONFIG_X86_5LEVEL=y
> configuration to define zsmalloc data structures.
>
> The patch introduces MAX_
From: Dexuan Cui
Date: Thu, 19 Oct 2017 03:33:14 +
>
> Without the patch, when hvs_open_connection() hasn't completely established
> a connection (e.g. it has changed sk->sk_state to SS_CONNECTED, but hasn't
> inserted the sock into the connected queue), vsock_stream_connect() may see
> the
In reset_deferred_meminit we determine number of pages that must not be
deferred. We initialize pages for at least 2G of memory, but also pages for
reserved memory in this node.
The reserved memory is determined in this function:
memblock_reserved_memory_within(), which operates over physical addr
On Friday, October 20, 2017 10:46:07 PM CEST Bjorn Helgaas wrote:
> On Mon, Oct 16, 2017 at 03:12:35AM +0200, Rafael J. Wysocki wrote:
> > Hi All,
> >
> > Well, this took more time than expected, as I tried to cover everything I
> > had
> > in mind regarding PM flags for drivers.
>
> For the par
On Fri, 20 Oct 2017, huang ying wrote:
> > 4 May < Linux version 4.11.2-1-ARCH
> > 4 Jun < Linux version 4.11.3-1-ARCH
> > 7 Jul < Linux version 4.11.9-1-ARCH
> > 4 Aug < Linux version 4.12.8-2-ARCH
> > 24 Sep < Linux version 4.12.13-1-ARCH
> > 158 Oct < Linux
Don't access next->data in kernel debug message when the
next buffer is null.
Acked-by: Arve Hjønnevåg
Signed-off-by: Sherry Yang
---
drivers/android/binder_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.
The vma argument in update_page_range is no longer
used after 74310e06 ("android: binder: Move buffer
out of area shared with user space"), since mmap_handler
no longer calls update_page_range with a vma.
Acked-by: Arve Hjønnevåg
Signed-off-by: Sherry Yang
---
drivers/android/binder_alloc.c | 1
Use binder_alloc struct's mm_struct rather than getting
a reference to the mm struct through get_task_mm to
avoid a potential deadlock between lru lock, task lock and
dentry lock, since a thread can be holding the task lock
and the dentry lock while trying to acquire the lru lock.
Acked-by: Arve H
binder_shrinker struct is not used anywhere outside of
binder_alloc.c and should be static.
Acked-by: Arve Hjønnevåg
Signed-off-by: Sherry Yang
---
drivers/android/binder_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/android/binder_alloc.c b/drivers/android
This patchset resolves a potential deadlock between lru lock, task lock
and dentry lock reported by lockdep. It also fixes the null pointer
dereference in kernel debug message in binder_alloc.c.
Unused vma argument is removed, and binder shrinker is made static.
android: binder: Don't get mm f
From: Samuel Mendoza-Jonas
Date: Thu, 19 Oct 2017 13:43:09 +1100
> From: Gavin Shan
>
> The length of GVI (GetVersionInfo) response packet should be 40 instead
> of 36. This issue was found from /sys/kernel/debug/ncsi/eth0/stats.
>
> # ethtool --ncsi eth0 swstats
> :
> RESPONSE OK
From: Samuel Mendoza-Jonas
Date: Thu, 19 Oct 2017 13:43:06 +1100
> ncsi_channel_monitor() misses stopping the channel monitor in several
> places that it should, causing a WARN_ON_ONCE() to trigger when the
> monitor is re-started later, eg:
>
> [ 459.04] WARNING: CPU: 0 PID: 1093 at net/nc
From: Samuel Mendoza-Jonas
Date: Thu, 19 Oct 2017 13:43:07 +1100
> From: Gavin Shan
>
> When there are no NCSI channels probed, HWA (Hardware Arbitration)
> mode is enabled. It's not correct because HWA depends on the fact:
> NCSI channels exist and all of them support HWA mode. This disables
>
From: Samuel Mendoza-Jonas
Date: Thu, 19 Oct 2017 13:43:08 +1100
> From: Gavin Shan
>
> The NCSI channel has been configured to provide service if its link
> monitor timer is enabled, regardless of its state (inactive or active).
> So the timeout event on the link monitor indicates the out-of-s
From: Samuel Mendoza-Jonas
Date: Thu, 19 Oct 2017 13:43:05 +1100
> Correct the value of the HNCDSC AEN packet.
> Fixes: 7a82ecf4cfb85 "net/ncsi: NCSI AEN packet handler"
>
> Signed-off-by: Samuel Mendoza-Jonas
Applied.
On Thu, Oct 19, 2017 at 11:39 AM, Doug Berger wrote:
>>> +static int brcmstb_gpio_resume(struct device *dev)
>>> +{
>>> +struct brcmstb_gpio_priv *priv = dev_get_drvdata(dev);
>>> +struct brcmstb_gpio_bank *bank;
>>> +u32 wake_mask = 0;
>>
>> This isn't really being used as a mask, con
On 10/20/2017 01:24 PM, Jon Masters wrote:
> 1). The first thing people do when they get an Arm server is to cat
> /proc/cpuinfo. They then come complaining that it's not like x86. They
> can't get the output their looking for and this results in bug filing,
> and countless hours on phone calls di
Use BUG_ON instead of if condition followed by BUG in do_setlink.
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva
---
This code was tested by compilation only.
net/core/rtnetlink.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net
On 10/20/2017 01:47 PM, Maciej W. Rozycki wrote:
On Fri, 20 Oct 2017, Aleksandar Markovic wrote:
Remove unnecessary space from FPU info segment of /proc/cpuinfo.
NAK. As I recall back in Nov 2001 I placed the extra space there to
visually separate the CPU part from the FPU part, e.g.:
cpu
On Tue, Oct 17, 2017 at 09:42:02AM -0600, Tyler Baicar wrote:
> Currently the AER driver uses cper_print_bits() to print the AER status
> string. This causes the status string to not include the proper PCI device
> name prefix that the other AER prints include. Also, it has a different
> print leve
From: Randy Dunlap
Fix build when CONFIG_MODULES is not enabled.
Fixes multiple build errors.
Signed-off-by: Randy Dunlap
Reported-by: kbuild test robot
Cc: Andi Kleen
---
lib/bug.c |2 ++
1 file changed, 2 insertions(+)
--- mmotm-2017-1019-1700.orig/lib/bug.c
+++ mmotm-2017-1019-1700/l
On Fri, 2017-10-20 at 16:54 -0600, dann frazier wrote:
> hey,
> I'm seeing a regression when executing 'dmraid -r -c' in an arm64
> QEMU guest, which I've bisected to the following commit:
>
> ca18d6f7 "block: Make most scsi_req_init() calls implicit"
>
> I haven't yet had time to try and deb
On Thu, 19 Oct 2017, David Howells wrote:
> From: Matthew Garrett
>
> uswsusp allows a user process to dump and then restore kernel state, which
> makes it possible to modify the running kernel. Disable this if the kernel
> is locked down.
>
> Signed-off-by: Matthew Garrett
> Signed-off-by: D
On Thu, 19 Oct 2017, David Howells wrote:
> From: Chun-Yi Lee
>
> When KEXEC_VERIFY_SIG is not enabled, kernel should not loads image
> through kexec_file systemcall if securelevel has been set.
>
> This code was showed in Matthew's patch but not in git:
> https://lkml.org/lkml/2015/3/13/778
>
On 10/20/2017 10:10 AM, Mark Rutland wrote:
> Hi Al,
>
> On Mon, Oct 16, 2017 at 05:43:19PM -0600, Al Stone wrote:
>> On 10/13/2017 08:27 AM, Mark Rutland wrote:
>>> I certainly agree that exposing the information that we have is useful,
>>> as I have stated several times. I'm not NAKing exposing
On 21/10/2017 00:40, Paolo Bonzini wrote:
> This breaks KVM completely on x86, due to two ioctls
> (KVM_GET/SET_CPUID2) accessing the cpuid_entries field of struct
> kvm_vcpu_arch.
>
> There's also another broken ioctl, KVM_XEN_HVM_CONFIG, but it is
> obsolete and not a big deal at all.
>
> I can
This ioctl is obsolete (it was used by Xenner as far as I know) but
still let's not break it gratuitously... Its handler is copying
directly into struct kvm. Go through a bounce buffer instead, with
the added benefit that we can actually do something useful with the
flags argument---the previous
Two KVM ioctls (KVM_GET/SET_CPUID2) directly access the cpuid_entries
field of struct kvm_vcpu_arch. Therefore, the new usercopy hardening
work in linux-next, which forbids copies from and to slab objects
unless they are from kmalloc or explicitly whitelisted, breaks KVM
completely.
This series f
On x86, struct kvm_vcpu has a usercopy region corresponding to the CPUID
entries. The area is read and written by the KVM_GET/SET_CPUID2 ioctls.
Without this patch, KVM is completely broken on x86 with usercopy
hardening enabled.
Define kvm_init in terms of a more generic function that allows set
On Thu, 19 Oct 2017, David Howells wrote:
> From: Matthew Garrett
>
> kexec permits the loading and execution of arbitrary code in ring 0, which
> is something that lock-down is meant to prevent. It makes sense to disable
> kexec in this situation.
>
> This does not affect kexec_file_load() whi
On Thu, 19 Oct 2017, David Howells wrote:
> From: Matthew Garrett
>
> Allowing users to write to address space makes it possible for the kernel to
> be subverted, avoiding module loading restrictions. Prevent this when the
> kernel has been locked down.
>
> Signed-off-by: Matthew Garrett
> Si
On Thu, 19 Oct 2017, David Howells wrote:
> If the kernel is locked down, require that all modules have valid
> signatures that we can verify.
>
> Signed-off-by: David Howells
Reviewed-by: James Morris
--
James Morris
On Fri, Oct 20, 2017 at 02:07:53PM +0300, Elena Reshetova wrote:
> Note: our previous thread didn't finish in any conclusion, so
> I am resending this now (rebased at latest linux-next) to revive
> the discussion. refcount_t is slowly becoming a standard for
> refcounters and we would really like t
On Thu, 19 Oct 2017, David Howells wrote:
> Provide a single call to allow kernel code to determine whether the system
> should be locked down, thereby disallowing various accesses that might
> allow the running kernel image to be changed including the loading of
> modules that aren't validly sign
Hi Sean,
On 10/21/2017 12:52 AM, Sean Paul wrote:
On Thu, Oct 19, 2017 at 11:48:05AM +0800, Jeffy Chen wrote:
This patch has somehow lost it's original author. I assume this is not
intentional.
oops, sorry, guess i used some wrongly command during the rebasing...
will fix that.
...not ENOMEM. Fix it.
Signed-off-by: Jeff Moyer
diff --git a/tools/testing/radix-tree/idr-test.c
b/tools/testing/radix-tree/idr-test.c
index 30cd0b2..2056d83 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -380,7 +380,7 @@ void ida_check_random(vo
On Thu, Oct 19, 2017 at 06:13:29PM +0530, Faiz Abbas wrote:
> Enable support for printing the LTSSM link state for debugging PCI
> when link is down.
>
> Signed-off-by: Faiz Abbas
> ---
> v2:
> 1. Changed dev_err() to dev_dbg()
> 2. Changed static char array to static const char * const
> 3. f
On Fri, 2017-10-20 at 22:46 +0100, Maciej W. Rozycki wrote:
> On Fri, 20 Oct 2017, Joe Perches wrote:
>
> > > > That's somewhat unpleasant code as it formats a fmt string
> > > > and the compiler can not verify fmt and args.
> > > >
> > > > Perhaps something like the below is preferable:
> > >
>
On Tue, Oct 17, 2017 at 12:07:17PM -0500, Gustavo A. R. Silva wrote:
> Fix inconsistent IS_ERR and PTR_ERR in faraday_pci_probe.
> The proper pointer to be passed as argument is p->bus_clk.
>
> This issue was detected with the help of Coccinelle.
>
> Reported-by: Julia Lawall
> Signed-off-by: Gu
Correct test on SMBIOS table 219 Misc Features bits for UEFI supported.
Signed-off-by: Jerry Hoemann
---
drivers/watchdog/hpwdt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index ef54b03..4c011e8 100644
--- a/drivers/wa
Do not claim the NMI (i.e. return NMI_DONE) if the source of
the NMI isn't the iLO watchdog or debug.
Signed-off-by: Jerry Hoemann
---
drivers/watchdog/hpwdt.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 4c011e8..b64ce
Three short patches to the hpwdt driver.
1. Add WDIOC_GETPRETIMEOUT so that user space can determine
when to expect the NMI arrivial.
2. The SMBIOS check was incorrect.
3. Do not claim NMI unless generated from iLO.
Jerry Hoemann (3):
watchdog: hpwdt: add ioctl WDIOC_GETPRETIMEOUT
watchd
Add support for WDIOC_GETPRETIMEOUT ioctl so that user applications
can determine when the NMI should arrive.
Signed-off-by: Jerry Hoemann
---
drivers/watchdog/hpwdt.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 67fbe35..ef
On Tue, Oct 17, 2017 at 09:54:56AM +0200, Thomas Gleixner wrote:
> Dexuan reported that the recent rework of the vector allocation mode in x86
> broke HyperV PCI passtrough because the rework missed to add the
> MSI_FLAG_MUST_REACTIVATE flag to the HyperV/PCI interrupt domain info.
>
> The simple
On Fri, Oct 20, 2017 at 11:57:48PM +0800, j...@suse.com wrote:
> On Fri, Oct 20, 2017 at 09:08:48AM +0100, David Howells wrote:
> > Hi Joey,
> >
> > Should I just lock down sys_bpf() entirely for now? We can always free it
> > up
> > somewhat later.
> >
> > David
>
> OK~~ Please just remove my
hey,
I'm seeing a regression when executing 'dmraid -r -c' in an arm64
QEMU guest, which I've bisected to the following commit:
ca18d6f7 "block: Make most scsi_req_init() calls implicit"
I haven't yet had time to try and debug it yet, but wanted to get
the report out there before the weekend.
On 10/19/2017 12:34 AM, C.Wehrmeyer wrote:
> I apologise in case this message is going to arrive multiple times at the
> mailing list. I've had connection problems this morning while trying to push
> it through regardless, but it might or might not have been sent properly. I'm
> sorry for the in
On 20/06/2017 01:36, Kees Cook wrote:
>
> This updates the slab allocator to add annotations (useroffset and
> usersize) to define allowed usercopy regions. Currently, hardened
> usercopy performs dynamic bounds checking on whole slab cache objects.
> This is good, but still leaves a lot of kernel
On Fri 20 Oct 07:43 PDT 2017, Georgi Djakov wrote:
> Hi,
>
> On 09/08/2017 08:18 PM, Georgi Djakov wrote:
> > This patch introduce a new API to get requirements and configure the
> > interconnect buses across the entire chipset to fit with the current demand.
> >
> > The API is using a consumer/
On Fri, Oct 20, 2017 at 9:29 AM, Christoph Hellwig wrote:
> On Fri, Oct 20, 2017 at 08:23:02AM -0700, Dan Williams wrote:
>> Yes, however it seems these drivers / platforms have been living with
>> the lack of struct page for a long time. So they either don't use DAX,
>> or they have a constrained
This commit adds support for Mitsubishi aa070mc01 TFT panel working
with 8 bit ISP mode (pin 19 "mode" HIGH for 20 pin TFT connector).
Signed-off-by: Lukasz Majewski
---
Changes for v2:
- Place the code sorted alphabetically
- Add missing ./Documentation/devicetree/binding/display properties
de
Signed-off-by: Lukasz Majewski
---
.../bindings/display/panel/tianma,tm070rvhg71.txt | 7 ++
drivers/gpu/drm/panel/panel-simple.c | 27 ++
2 files changed, 34 insertions(+)
create mode 100644
Documentation/devicetree/bindings/display/panel/tianma,tm070rvh
On Fri, 20 Oct 2017, Joe Perches wrote:
> > > That's somewhat unpleasant code as it formats a fmt string
> > > and the compiler can not verify fmt and args.
> > >
> > > Perhaps something like the below is preferable:
> >
> > Hmm, what problem exactly are you trying to solve with code that has
This commit adds support for Mitsubishi aa070mc01 TFT panel working
with 8 bit ISP mode (pin 19 "mode" HIGH for 20 pin TFT connector).
Signed-off-by: Lukasz Majewski
---
Changes for v2:
- Place the code sorted alphabetically
- Add missing ./Documentation/devicetree/binding/display properties
de
On Fri, Oct 20, 2017 at 12:16:06PM -0700, Ricardo Neri wrote:
> Perhaps I can send the v10 of patches 1-18 (or a v1 since is a new
> series?). Patches 19-29 would constitute a series of improved emulation
> plus UMIP code.
>
> Does it make sense?
Yap, it does. It is still tip guys' final decision
Hi Rafael,
Thank you very much!
With this patch I am now able to dynamically modify the latency requirements
via the kernel API.
Below I provide the details of what I tested.
On a four core system I wanted to dynamically constrain two cores from entering
deeper C-states.
# grep . /sys/devices
If devm_extcon_dev_allocate() fails, we should disable clk before return.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov
Fixes: 860d2686fda7 ("usb: phy: tahvo: Use
devm_extcon_dev_[allocate|register]() and replace deprecated API")
---
drivers/u
From: Gustavo Padovan
In all places that we were calling v4l2_ctrl_subscribe event() we now call
v4l2_subscribe_event_v4l2() that embed v4l2_ctrl_subscribe event() and can
be expanded to support more events.
Signed-off-by: Gustavo Padovan
---
drivers/media/common/saa7146/saa7146_video.c
From: Gustavo Padovan
We need a common function to subscribe all the common events in drivers,
so far we had only V4L2_EVENT_CTRL, so such a function wasn't necessary,
but we are about to introduce a new event for the upcoming explicit fences
implementation, thus a common place is needed.
Signed
From: Gustavo Padovan
For some type of events we may require the event user in the
kernel to run some operation when DQ_EVENT() is called.
V4L2_EVENT_OUT_FENCE is the first user of this mechanism as it needs
to call v4l2 core back to install a file descriptor.
This is WIP, I believe we are able
From: Gustavo Padovan
Instead of assigning the global v4l2 device, assign the specific device.
This was causing trouble when using V4L2 events with vivid devices.
The device's queue should be the same we opened in userspace.
This is needed for the upcoming V4L2_EVENT_OUT_FENCE support. The curre
From: Gustavo Padovan
By setting this member on vb2_queue the driver tell vb2 core that
it requires the buffers queued in QBUF to be queued with same order to the
driver.
Signed-off-by: Gustavo Padovan
---
include/media/videobuf2-core.h | 4
1 file changed, 4 insertions(+)
diff --git a/i
From: Gustavo Padovan
Turn the reserved2 field into fence_fd that we will use to send
an in-fence to the kernel and return an out-fence from the kernel to
userspace.
Two new flags were added, V4L2_BUF_FLAG_IN_FENCE, that should be used
when sending a fence to the kernel to be waited on, and
V4L2
From: Javier Martinez Canillas
Add a videobuf2-fence.h header file that contains different helpers
for DMA buffer sharing explicit fence support in videobuf2.
v2: - use fence context provided by the caller in vb2_fence_alloc()
Signed-off-by: Javier Martinez Canillas
Signed-off-by: Gustavo
From: Gustavo Padovan
To support explicit synchronization we need to run all operations that can
fail before we queue the buffer to the driver. With fences the queueing
will be delayed if the fence is not signaled yet and it will be better if
such callback do not fail.
For that we move the vb2_s
From: Gustavo Padovan
Receive in-fence from userspace and add support for waiting on them
before queueing the buffer to the driver. Buffers are only queued
to the driver once they are ready. A buffer is ready when its
in-fence signals.
For queues that require vb2 to queue buffers to the v4l2 dri
From: Gustavo Padovan
Add vb2_setup_out_fence() and the needed members to struct vb2_buffer.
v2: - change it to reflect fd_install at DQEVENT
- add fence context for out-fences
Signed-off-by: Gustavo Padovan
---
drivers/media/v4l2-core/videobuf2-core.c | 31 +++
From: Gustavo Padovan
If V4L2_BUF_FLAG_OUT_FENCE flag is present on the QBUF call we create
an out_fence and send to userspace on the V4L2_EVENT_OUT_FENCE when
the buffer is queued to the driver, or right away if the queue is ordered
both in VB2 and in the driver.
The fence is signaled on buffer
From: Gustavo Padovan
Add section to VIDIOC_QBUF about it
v3:
- make the out_fence refer to the current buffer (Hans)
- Note what happens when the IN_FENCE is not set (Hans)
v2:
- mention that fences are files (Hans)
- rework for the new API
Signed-off-by: Gusta
On Fri, Oct 20, 2017 at 9:25 AM, Shakeel Butt wrote:
> lru_add_drain_all() is not required by mlock() and it will drain
> everything that has been cached at the time mlock is called. And
> that is not really related to the memory which will be faulted in
> (and cached) and mlocked by the syscall i
From: Gustavo Padovan
To enable vivid to be used with explicit synchronization we need
to mark its queues as ordered. vivid queues are already ordered by
default so we no changes are needed.
v2: rename 'ordered' to 'ordered_in_driver' to avoid confusion.
Signed-off-by: Gustavo Padovan
Acked-by
From: Gustavo Padovan
For explicit synchronization (and soon for HAL3/Request API) we need
the v4l2-driver to guarantee the ordering in which the buffers were queued
by userspace. This is already true for many drivers, but we never needed
to say it.
v2: rename property to 'ordered_in_driver' to
From: Gustavo Padovan
With the upcoming explicit synchronization support to V4L2 we need a
way to notify userspace of the out_fence_fd when buffers are queued to the
driver - buffers with in-fences attached to it can only be queued once the
fence signal, so the queueing to the driver might be def
From: Gustavo Padovan
Driver that implement their own .vidioc_subscribe_event function should
be using v4l2_subscribe_event_v4l2() instead of
v4l2_ctrl_subscribe_event().
Signed-off-by: Gustavo Padovan
---
drivers/media/pci/cobalt/cobalt-v4l2.c | 2 +-
drivers/media/pci/ivtv/ivtv-i
From: Gustavo Padovan
Add a new event the userspace can subscribe to receive notifications
of the out_fence_fd when a buffer is queued onto the driver.
The event provides the index of the queued buffer and the out_fence_fd.
v3: - Rename event to V4L2_EVENT_OUT_FENCE
v2: - Add missing Documentat
From: Gustavo Padovan
Hi,
I renamed this back to RFC as many things are still under
discussion/open but it integrates all comments received on the
previous round[1].
My main goal now is to fit as many use cases as possible into this
Explicit Synchronization implementation, but first I'd like to
On Fri, Oct 20, 2017 at 7:21 AM, Greg Kroah-Hartman
wrote:
> On Tue, Oct 17, 2017 at 11:07:20AM -0500, Rob Herring wrote:
>> On Mon, Oct 16, 2017 at 8:06 AM, Johan Hovold wrote:
>> > The tty-driver open routine is mandatory, but the serdev
>> > tty-port-controller implementation did not treat it
On Fri, Oct 20, 2017 at 12:27 PM, Brian Norris
wrote:
> Hi,
>
> On Thu, Oct 19, 2017 at 02:58:55PM -0700, Florian Fainelli wrote:
>> On 10/19/2017 02:49 PM, Rob Herring wrote:
>> > On Tue, Oct 17, 2017 at 5:42 PM, Jim Quinlan wrote:
>> >> On Tue, Oct 17, 2017 at 4:24 PM, Rob Herring wrote:
>> >>
On Fri, Oct 13, 2017 at 09:35:40PM +0300, Mika Westerberg wrote:
> Currently when plugging PCIe device using native PCIe hotplug Linux PCI
> core tries to allocate bus space and resources so that the newly enumerated
> topology barely fits there. Now, if the PCIe topology that was just plugged
> in
> -Original Message-
> From: Greg KH [mailto:gre...@linuxfoundation.org]
> Sent: Friday, October 20, 2017 3:28 PM
> To: KY Srinivasan
> Cc: linux-kernel@vger.kernel.org; de...@linuxdriverproject.org;
> o...@aepfle.de; a...@canonical.com; vkuzn...@redhat.com;
> jasow...@redhat.com; leann.
The following changes since commit 8a5776a5f49812d29fe4b2d0a2d71675c3facf3f:
Linux 4.14-rc4 (2017-10-08 20:53:29 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git
tags/armsoc-fixes
for you to fetch changes up to 6bf99a6cb69f78de0083
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