On Thu, Jan 28, 2021 at 2:59 AM wrote:
>
> Hi, Saravana,
>
> On 1/25/21 8:16 PM, Saravana Kannan wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> > content is safe
> >
> > On Mon, Jan 25, 2021 at 9:05 AM wrote:
> >>
> >> Hi, Saravana,
> >>
> >> On 12/18/20
On Tue, Jan 19, 2021 at 07:34:49PM -0600, Eric W. Biederman wrote:
> Miklos Szeredi writes:
>
> > If a capability is stored on disk in v2 format cap_inode_getsecurity() will
> > currently return in v2 format unconditionally.
> >
> > This is wrong: v2 cap should be equivalent to a v3 cap with zero
Note: this patch is getting reverted upstream, because it causes a
double free (admittedly under very rare circumstances, but still).
I'll mark the revert for stable, since it seems to have made it into
basically all stable kernels.
The revert commit is 757fed1d0898 Revert "mm/slub: fix a memory
On Mon, Jan 25, 2021 at 02:13:18PM +0300, Arseny Krasnov wrote:
This does rest of SOCK_SEQPACKET support:
1) Adds socket ops for SEQPACKET type.
2) Allows to create socket with SEQPACKET type.
Signed-off-by: Arseny Krasnov
---
net/vmw_vsock/af_vsock.c | 71 ++
On 13/01/2021 22:57, Enric Balletbo i Serra wrote:
> The MT8183 display PWM device will not work until the associated
> power-domain is enabled. Add the power-domain reference to the node
> allows the display PWM driver to operate and the backlight turn on.
>
> Fixes: f15722c0fef0 ("arm64: dts:
Lockdep complains about an AA deadlock when rebooting the device.
WARNING: possible recursive locking detected
5.4.91 #1 Not tainted
reboot/5213 is trying to acquire lock:
ff80d13391b0 (&kms->commit_lock[
Creates an system management API to allow complex configurations and
features to be programmed into a CoreSight infrastructure.
A feature is defined as a programming set for a device or class of
devices.
A configuration is a set of features across the system that are enabled
for a trace session.
Hello,
syzbot found the following issue on:
HEAD commit:b491e6a7 net: lapb: Add locking to the lapb module
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=17ba0f2cd0
kernel config: https://syzkaller.appspot.com/x/.config?x=be33d8015c9de024
dashboard link: ht
Adds a set of generic support functions that allow devices to set and save
features values on the device, and enable and disable configurations.
Additional functions for other common operations including feature
reset.
Signed-off-by: Mike Leach
---
drivers/hwtracing/coresight/Makefile
Userspace that does not know about KVM_GET_MSR_FEATURE_INDEX_LIST will
generally use the default value for MSR_IA32_ARCH_CAPABILITIES.
When this happens and the host has tsx=on, it is possible to end up
with virtual machines that have HLE and RTM disabled, but TSX_CTRL
disabled.
If the fleet is th
On Thu, Jan 28, 2021, Paolo Bonzini wrote:
> On 14/01/21 01:36, Sean Christopherson wrote:
> > Add a reverse-CPUID entry for the memory encryption word, 0x801F.EAX,
> > and use it to override the supported CPUID flags reported to userspace.
> > Masking the reported CPUID flags avoids over-repor
On Thu, Jan 28, 2021 at 12:28:37AM -0800, Chris Goldsworthy wrote:
> On 2021-01-26 18:59, Matthew Wilcox wrote:
> > On Tue, Jan 26, 2021 at 02:59:17PM -0800, Minchan Kim wrote:
> > > The release buffer_head in LRU is great improvement for migration
> > > point of view.
> > >
> > > A question:
>
>
From: Colin Ian King
The variable rtstatu is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
---
drivers/net/wireless/realte
Hi Catalin,
On Wed, Jan 27, 2021 at 01:09:36PM +, Catalin Marinas wrote:
> On Thu, 21 Jan 2021 17:24:19 -0800, Moritz Fischer wrote:
> > Address issue observed on real world system with suboptimal IORT table
> > where DMA masks of PCI devices would get set to 0 as result.
> >
> > iort_dma_set
Adds in handlers to allow the ETMv4 to use the complex configuration
support. Features and configurations can be loaded and selected in the
device.
Signed-off-by: Mike Leach
---
drivers/hwtracing/coresight/Makefile | 3 +-
.../hwtracing/coresight/coresight-etm4x-cfg.c | 184 ++
Simply checking if the segcblist is enabled is enough to know if we
need to initialize it or not. It's safe to check within hotplug
machine.
Signed-off-by: Frederic Weisbecker
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upadhyay
Cc: Boqun Feng
---
kernel/rcu/tree.c | 9
Toggling the NOCB state of a CPU when it is offline imply some specific
issues to handle, especially making sure that the kthreads have handled
all the remaining callbacks and bypass before the corresponding CPU can
be set as non-offloaded while it is offline.
To prevent from such complications, s
Explain why we need to disable softirqs while processing callbacks in
an offline fashion. The subtle reason doesn't want to be forgotten.
Reported-by: Boqun Feng
Reported-by: Paul E. McKenney
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upadhyay
Cc: Boqun Feng
Signed-of
Quoting Enric Balletbo Serra (2021-01-28 01:58:48)
> Missatge de Stephen Boyd del dia dj., 28 de gen.
> 2021 a les 9:48:
> > diff --git a/drivers/iio/proximity/cros_ec_mkbp_proximity.c
> > b/drivers/iio/proximity/cros_ec_mkbp_proximity.c
> > new file mode 100644
> > index ..c8f33cf11b
For the last month my logs have been flooded many times a second with:
"nouveau :01:00.0: [drm] *ERROR* crtc 50: Can't calculate
constants, dotclock = 0!"
(see line 641 of drm_vblank.c) which is distracting for debugging all
other kernel problems (since dmesg entries on this system are 99+%
t
On Wed, Jan 27, 2021 at 3:54 PM Will Deacon wrote:
>
> The objective is to fix the lacklustre TLB invalidation on the clear_refs
> path and then augment the mmu_gather API to make it more difficult to
> abuse.
The series continues to look good to me.
I don't love our "tlb_flush_pending" hackery,
On Thu, Jan 28, 2021 at 8:08 PM Jens Axboe wrote:
>
> On 1/28/21 5:04 AM, Kanchan Joshi wrote:
> > On Wed, Jan 27, 2021 at 9:32 PM Pavel Begunkov
> > wrote:
> >>
> >> On 27/01/2021 15:42, Pavel Begunkov wrote:
> >>> On 27/01/2021 15:00, Kanchan Joshi wrote:
> This RFC patchset adds asynchro
No need to disarm the nocb_timer if rcu_nocb is polling because it
shouldn't be armed either.
Signed-off-by: Frederic Weisbecker
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upadhyay
Cc: Boqun Feng
---
kernel/rcu/tree_plugin.h | 10 +-
1 file changed, 5 insertio
As we wake up in nocb_gp_wait(), there is no need to keep the nocb_timer
around as we are going to go through the whole rdp list again. Any update
performed before the timer was armed will now be visible after the
nocb_gp_lock acquire.
Signed-off-by: Frederic Weisbecker
Cc: Josh Triplett
Cc: Lai
Now that nocb_timer and nocb_bypass_timer have become very similar,
merge them together. A new RCU_NOCB_WAKE_BYPASS wake level is introduced.
As a result, timers perform all kinds of deferred wake ups but other
deferred wakeup callsites only handle non-bypass wakeups in order not
to wake up rcuo to
On Thu, Jan 28, 2021 at 5:01 PM Eric Dumazet wrote:
>
>
>
> On 1/28/21 8:23 AM, Dmitry Vyukov wrote:
> > On Thu, Jan 28, 2021 at 3:43 AM Hillf Danton wrote:
> >>
> >> Init the u64 stats in order to avoid the lockdep prints on the 32bit
> >> hardware like
> >
> > FTR this is not just to avoid lock
The only thing that prevented an rdp leader from being de-offloaded was
the nocb_bypass_timer that used to lock the nocb_lock of the rdp leader.
If an rdp gets de-offloaded, it will subtely ignore rcu_nocb_lock()
calls and do its job in the timer unsafely. Worse yet: if it gets
re-offloaded in the
A NOCB-gp wake up can safely delete the nocb_bypass_timer. nocb_gp_wait()
is going to check again the bypass state and rearm the bypass timer if
necessary.
Signed-off-by: Frederic Weisbecker
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upadhyay
Cc: Boqun Feng
---
kernel
Provide a way to tune the deferred wakeup level we want to perform from
a safe wakeup point. Currently those sites are:
* nocb_timer
* user/idle/guest entry
* CPU down
* softirq/rcuc
All of these sites perform the wake up for both RCU_NOCB_WAKE and
RCU_NOCB_WAKE_FORCE.
In order to merge nocb_tim
On Wed, Jan 27, 2021 at 04:38:28PM -0800, Jianxiong Gao wrote:
> For devices that need to preserve address offset on mapping through
> swiotlb, this patch adds offset preserving based on page_offset_mask
> and keeps the offset if the mask is non zero. This is needed for
> device drivers like NVMe.
On Wed, Jan 27, 2021 at 02:25:33PM +0530, Anshuman Khandual wrote:
> This adds TRBE related registers and corresponding feature macros.
>
> Cc: Mathieu Poirier
> Cc: Mike Leach
> Cc: Suzuki K Poulose
> Signed-off-by: Anshuman Khandual
Acked-by: Catalin Marinas
On 28/01/2021 16:58, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:76c057c8 Merge branch 'parisc-5.11-2' of git://git.kernel...
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=11959454d0
> kernel config: https://syz
Hi Arseny,
I reviewed a part, tomorrow I hope to finish the other patches.
Just a couple of comments in the TODOs below.
On Mon, Jan 25, 2021 at 02:09:00PM +0300, Arseny Krasnov wrote:
This patchset impelements support of SOCK_SEQPACKET for virtio
transport.
As SOCK_SEQPACKET gu
On Wed, Jan 27, 2021 at 11:11:25PM -0800, Chaitanya Kulkarni wrote:
> Signed-off-by: Chaitanya Kulkarni
Seems fine to me...
Reviewed-by: Darrick J. Wong
--D
> ---
> fs/xfs/xfs_bio_io.c | 7 ++-
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/fs/xfs/xfs_bio_io.c b/fs/xf
On Wed, Jan 27, 2021 at 11:11:26PM -0800, Chaitanya Kulkarni wrote:
> Signed-off-by: Chaitanya Kulkarni
Reviewed-by: Darrick J. Wong
--D
> ---
> fs/xfs/xfs_buf.c | 6 ++
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
> index f8400bb
On systems that do not have the traditional PC ISA serial ports, the
8250 driver still creates non-functional device nodes. This change
makes only ports that actually exist (PCI, DT, ...) get device nodes.
Signed-off-by: Mans Rullgard
---
drivers/tty/serial/8250/8250_core.c | 26 +++
On 28/01/2021 16:59, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:d03154e8 Add linux-next specific files for 20210128
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=159d08a0d0
&g
Hi,
On Sun, Jan 24, 2021 at 08:39:03PM +0100, Alexandre GRIVEAUX wrote:
> Add Inet 86V Rev 2 support, based upon Inet 86VS.
>
> The Inet 86V use SL1536 touchpanel controller, the Inet 86VS a GSL1680,
> which make them both incompatible.
>
> Missing things:
> - Accelerometer (MXC6225X)
> - Touchp
Hi Marco,
Thanks for your time.
Le jeu. 28 janv. 2021 à 17:18, Marco Felsch a écrit :
>
> Hi Adrien,
>
> thanks for the patch. I've made only a few comments inline.
>
> On 21-01-18 12:15, Adrien Grassein wrote:
> > Tested with a basic Build Root configuration booting from sdcard.
> >
> > Signed-
On Wed, Jan 27, 2021 at 11:11:17PM -0800, Chaitanya Kulkarni wrote:
> Signed-off-by: Chaitanya Kulkarni
> ---
> fs/iomap/direct-io.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
> index f6c557a1bd25..0737192f7e5c 100644
On 1/28/21 10:13 AM, Kanchan Joshi wrote:
> On Thu, Jan 28, 2021 at 8:08 PM Jens Axboe wrote:
>>
>> On 1/28/21 5:04 AM, Kanchan Joshi wrote:
>>> On Wed, Jan 27, 2021 at 9:32 PM Pavel Begunkov
>>> wrote:
On 27/01/2021 15:42, Pavel Begunkov wrote:
> On 27/01/2021 15:00, Kanchan Joshi
On Thu, Jan 28, 2021 at 8:20 PM Jens Axboe wrote:
>
> On 1/28/21 5:04 AM, Kanchan Joshi wrote:
> > And for some ioctls, driver may still need to use task-work to update
> > the user-space pointers (embedded in uring/ioctl cmd) during
> > completion.
>
> For this use case, we should ensure that jus
On 2021-01-28 00:38, Jianxiong Gao wrote:
Some devices rely on the address offset in a page to function
correctly (NVMe driver as an example). These devices may use
a different page size than the Linux kernel. The address offset
has to be preserved upon mapping, and in order to do so, we
need to
Hi Geert,
On Thu, 28 Jan 2021 at 20:56, Geert Uytterhoeven wrote:
>
> Hi Naresh,
>
> On Thu, Jan 28, 2021 at 3:25 PM Naresh Kamboju
> wrote:
> > arm, sh and riscv architecture build failed on today's Linux next tag
> > 20210128.
> >
> > FYI,
> &g
On Thu, Jan 28, 2021 at 7:03 AM Jon Hunter wrote:
>
>
> On 14/01/2021 16:56, Jon Hunter wrote:
> >
> > On 14/01/2021 16:47, Saravana Kannan wrote:
> >
> > ...
> >
> >>> Yes this is the warning shown here [0] and this is coming from
> >>> the 'Generic PHY stmmac-0:00' device.
> >>
> >> Can you prin
On 28/01/21 18:09, Sean Christopherson wrote:
On Thu, Jan 28, 2021, Paolo Bonzini wrote:
On 14/01/21 01:36, Sean Christopherson wrote:
Add a reverse-CPUID entry for the memory encryption word, 0x801F.EAX,
and use it to override the supported CPUID flags reported to userspace.
Masking the re
On 28/01/2021 17:25, Jens Axboe wrote:
> On 1/28/21 10:12 AM, Pavel Begunkov wrote:
>> On 28/01/2021 16:58, syzbot wrote:
>>> Hello,
>>>
>>> syzbot found the following issue on:
>>>
>>> HEAD commit:76c057c8 Merge branch 'parisc-5.11-2' of git://git.kernel...
>>> git tree: upstream
>>> con
On 1/28/21 10:12 AM, Pavel Begunkov wrote:
> On 28/01/2021 16:58, syzbot wrote:
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit:76c057c8 Merge branch 'parisc-5.11-2' of git://git.kernel...
>> git tree: upstream
>> console output: https://syzkaller.appspot.com/x/log.
Currently each offline rdp has its own nocb_timer armed when the
nocb_gp wakeup must be deferred. This layout has many drawbacks,
compared to a solution based on a single timer per rdp group:
* It's a lot of timers to maintain.
* The per rdp nocb lock must be held to arm and cancel the timer and
The bypass timer calls __call_rcu_nocb_wake() instead of directly
calling __wake_nocb_gp(). The only difference here is that
rdp->qlen_last_fqs_check gets overriden. But resetting the deferred
force quiescent state base shouldn't be relevant for that timer. In fact
the bypass queue in concern can b
Unconfuse a bit the name of this function which suggests returning true
when the state is updated. It actually returns true when the rdp is in
the process of deoffloading and we must ignore it.
Reported-by: Paul E. McKenney
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upad
Hello,
I've been looking into how a migration to using trusted/encrypted keys
would look like (particularly with dm-crypt).
Currently, it seems the the only way is to re-encrypt the partitions
because trusted/encrypted keys always generate their payloads from
RNG.
If instead there was a key comm
On architectures where the is no coherent caching such as ARM use the
dma_alloc_noncontiguos API and handle manually the cache flushing using
dma_sync_sgtable().
With this patch on the affected architectures we can measure up to 20x
performance improvement in uvc_video_copy_data_work().
Eg: aarch
On Thu, Jan 28, 2021 at 12:15:28PM -0500, Konrad Rzeszutek Wilk wrote:
> On Wed, Jan 27, 2021 at 04:38:28PM -0800, Jianxiong Gao wrote:
> > For devices that need to preserve address offset on mapping through
> > swiotlb, this patch adds offset preserving based on page_offset_mask
> > and keeps the
Those tracing calls don't need to be under the nocb lock. Move them
outside.
Signed-off-by: Frederic Weisbecker
Cc: Josh Triplett
Cc: Lai Jiangshan
Cc: Joel Fernandes
Cc: Neeraj Upadhyay
Cc: Boqun Feng
---
kernel/rcu/tree_plugin.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Some products will be available that have PMT capabilities that are not
supported. Remove the warnings in this instance to avoid nuisance messages
and confusion.
Also return an error code for capabilities that are disabled by quirk to
prevent them from keeping the driver loaded if only disabled ca
From: Colin Ian King
The variable result is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
---
drivers/staging/wimax/i2400m
Instead of flushing bypass at the very last moment in the deoffloading
process, just disable bypass enqueue at soon as we start the deoffloading
process and flush the pending bypass early. It's less fragile and we
leave some time to the kthreads and softirqs to process quietly.
Symmetrically, only
Hi Lukasz,
On Thu, Jan 28, 2021 at 02:07:53PM +0100, Lukasz Majczak wrote:
> There is a missing call to tpm_request_locality before the call to
> the tpm_get_timeouts() and tpm_tis_probe_irq_single(). As the current
> approach might work for tpm2, it fails for tpm1.x - in that case
> call to tpm_g
Hi,
(Sorry if duplicating.)
My arm64 build got broken today:
fs/nfs/super.o: In function `nfs_ssc_register_ops':
/home/yury/work/linux/fs/nfs/super.c:120: undefined reference to
`nfs_ssc_register'
fs/nfs/super.o: In function `nfs_ssc_unregister_ops':
/home/yury/work/linux/fs/nfs/super.c:127: und
On 1/28/21 11:59 AM, Marcelo Tosatti wrote:
> On Thu, Jan 28, 2021 at 05:02:41PM +0100, Thomas Gleixner wrote:
>> On Wed, Jan 27 2021 at 09:19, Marcelo Tosatti wrote:
>>> On Wed, Jan 27, 2021 at 11:57:16AM +, Robin Murphy wrote:
> + hk_flags = HK_FLAG_DOMAIN | HK_FLAG_MANAGED_IRQ;
> +
rdp->nocb_cb_sleep is first set to true by default after processing
the callbacks then set back to false if we still find ready callbacks
to invoke.
This is confusing and even unsafe if it ever happens to be read
locklessly at some point. So make sure we write it only once per
nocb_cb_wait() loop.
On 1/28/21 12:33 AM, Yang Shi wrote:
> The following patch is going to add nr_deferred into shrinker_map, the change
> will
> make shrinker_map not only include map anymore, so rename it to a more general
> name. And this should make the patch adding nr_deferred cleaner and readable
> and make
>
On 2021-01-28, Petr Mladek wrote:
>> [ 903.189448][ T356] [ 778.825864] [ 655.250559] [ 531.607066] [
>> 407.120936] tasks-torture:torture_onoff task: online 0 failed: errno -5
>>
>> These multi-timestamp lines are odd. And they are almost exactly 124
>> seconds apart.
>
> Yup, this looks
On 28/01/2021 17:52, David Howells wrote:
>
> Hi Mickaël,
Hi David,
>
> I could pull your patches (unless Jarkko wants to), but can you please drop
> the patches that are also in my keys-misc branch lest one or other (or both)
> of our branches get dropped in the next merge window due to conf
On 06/11/20 02:16, Yang Weijiang wrote:
Introduce a host-only synthetic MSR, MSR_KVM_GUEST_SSP so that the VMM
can read/write the guest's SSP, e.g. to migrate CET state. Use a
synthetic MSR, e.g. as opposed to a VCPU_REG_, as GUEST_SSP is subject
to the same consistency checks as the PL*_SSP MSR
Le 28/01/2021 à 11:49, Georgi Djakov a écrit :
Hi Christophe,
Thanks for the fix!
On 1/27/21 22:17, Christophe JAILLET wrote:
If an error occurs after a successful 'of_icc_get()' call, it must be
undone by a corresponding 'icc_put()' call.
This works, but why not switch to devm_of_icc_get(
On 06/11/20 02:16, Yang Weijiang wrote:
Introduce a host-only synthetic MSR, MSR_KVM_GUEST_SSP so that the VMM
can read/write the guest's SSP, e.g. to migrate CET state. Use a
synthetic MSR, e.g. as opposed to a VCPU_REG_, as GUEST_SSP is subject
to the same consistency checks as the PL*_SSP MSR
On Thu, Jan 28, 2021 at 1:20 AM Tiezhu Yang wrote:
>
> When I open https://bpf.io/, it seems too slow.
>
> $ curl -s -S -L https://bpf.io/ -o /dev/null -w '%{time_redirect}\n'
> 2.373
>
> $ curl -s -S -L https://bpf.io/ -o /dev/null -w '%{url_effective}\n'
> https://ebpf.io/
>
> $ curl -s -S -L ht
On Thu, Jan 28, 2021 at 07:43:26PM +0800, Aili Yao wrote:
> when one page is already hwpoisoned by AO action, process may not be
> killed, the process mapping this page may make a syscall include this
> page and result to trigger a VM_FAULT_HWPOISON fault, as it's in kernel
> mode it may be fixed b
The "nocb_bypass_timer" ends up calling wake_nocb_gp() which deletes
the pending "nocb_timer" (note they are not the same timers) for the
given rdp without resetting the matching state stored in nocb_defer
wakeup.
As a result, a future call_rcu() on that rdp may be fooled and think the
timer is ar
So this set has grown further than I expected.
This addresses most reviews from Paul and also consolidates the nocb
timers code.
Please mind the very first patch that is a stable bugfix.
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
rcu/dev
HEAD: 75991420c246
Adds configfs subsystem and attributes to the configuration manager
to enable the listing of loaded configurations and features.
The default values of feature parameters can be accessed and altered
from these attributes to affect all installed devices using the feature.
Signed-off-by: Mike Leach
Add calls to activate the selected configuration as perf starts
and stops the tracing session.
Signed-off-by: Mike Leach
---
drivers/hwtracing/coresight/coresight-etm-perf.c | 14 +-
drivers/hwtracing/coresight/coresight-etm-perf.h | 2 ++
2 files changed, 15 insertions(+), 1 deleti
Adds documentation for the CoreSight System configuration manager.
Signed-off-by: Mike Leach
---
.../trace/coresight/coresight-config.rst | 244 ++
Documentation/trace/coresight/coresight.rst | 16 ++
2 files changed, 260 insertions(+)
create mode 100644 Documentation/tr
Preload set of configurations.
This patch creates a small set of preloaded configurations and features
that are available immediately after coresight has been initialised.
The current set provides a strobing feature for ETMv4, that creates a
periodic sampling of trace by switching trace generatio
Loaded coresight configurations are registered in the cs_etm\cs_config sub
directory. This extends the etm-perf code to handle these registrations,
and the cs_syscfg driver to perform the registration on load.
Signed-off-by: Mike Leach
---
.../hwtracing/coresight/coresight-config.h| 5 +-
On 06/11/20 02:16, Yang Weijiang wrote:
+static bool cet_is_ssp_msr_accessible(struct kvm_vcpu *vcpu,
+ struct msr_data *msr)
+{
+ u64 mask;
+
+ if (!kvm_cet_supported())
+ return false;
+
+ if (msr->host_initiated)
+
Configurations are first activated, then when any coresight device is
enabled, the active configurations are checked and any matching
one is enabled.
This patch provides the activation / enable API.
Signed-off-by: Mike Leach
---
.../hwtracing/coresight/coresight-config.h| 2 +
.../hwtraci
This patchset introduces initial concepts in CoreSight system
configuration management support. to allow more detailed and complex
programming to be applied to CoreSight systems during trace capture.
Configurations consist of 2 elements:-
1) Features - programming combinations for devices, applied
API for individual devices to register with the syscfg management
system is added.
Devices register with matching information, and any features or
configurations that match will be loaded into the device.
The feature and configuration loading is extended so that on load these
are loaded into any
On 06/11/20 02:16, Yang Weijiang wrote:
Report all CET MSRs, including the synthetic GUEST_SSP MSR, as
to-be-saved, e.g. for migration, if CET is supported by KVM.
Co-developed-by: Sean Christopherson
Signed-off-by: Sean Christopherson
Signed-off-by: Yang Weijiang
---
arch/x86/kvm/x86.c | 9
Qualcomm QCA639x is a family of WiFi + Bluetooth chips, with BT part
being controlled through the UART and WiFi being present on PCIe
bus. Both blocks share common power sources wich should be turned on
before either of devices can be probed. Declare common 'qca639x' driver
providing a power domain
Some Qualcomm platforms require to power up an external device before
probing the PCI bus. E.g. on RB5 platform the QCA6390 WiFi/BT chip needs
to be powered up before PCIe0 bus is probed. Add a quirk to the
respective PCIe root bridge to attach to the power domain if one is
required, so that the QC
Qualcomm QCA639x is a family of WiFi + Bluetooth SoCs, with BT part
being controlled through the UART and WiFi being present on PCIe
bus. Both blocks share common power sources. Add device driver handling
power sequencing of QCA6390/1.
Signed-off-by: Dmitry Baryshkov
---
drivers/misc/Kconfig
Add qca6391 to device tree as a way to provide power domain to WiFi and
BT parts of the chip.
Signed-off-by: Dmitry Baryshkov
---
arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 61
1 file changed, 61 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
b/arc
From: Manivannan Sadhasivam
Add Bluetooth support on RB5 using the onboard QCA6391 WLAN+BT chipset.
Signed-off-by: Manivannan Sadhasivam
[DB: added qca6391 power domain, removed s2f regulator]
Signed-off-by: Dmitry Baryshkov
---
arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 29 ++
On Thu, Jan 28, 2021 at 1:13 AM Christoph Hellwig wrote:
>
> On Thu, Jan 28, 2021 at 12:38:17AM -0800, Suren Baghdasaryan wrote:
> > Currently system heap maps its buffers with VM_PFNMAP flag using
> > remap_pfn_range. This results in such buffers not being accounted
> > for in PSS calculations be
On 06/11/20 02:16, Yang Weijiang wrote:
+
+ if (((cr4 ^ old_cr4) & X86_CR4_CET) && kvm_cet_supported()) {
+ vmcs_writel(GUEST_SSP, 0);
+ vmcs_writel(GUEST_S_CET, 0);
+ vmcs_writel(GUEST_INTR_SSP_TABLE, 0);
+ }
+
Is this behavior documented
> Il giorno 26 gen 2021, alle ore 17:18, Jens Axboe ha
> scritto:
>
> On 1/26/21 3:50 AM, Paolo Valente wrote:
>> Consider a new I/O request that arrives for a bfq_queue bfqq. If, when
>> this happens, the only active bfq_queues are bfqq and either its waker
>> bfq_queue or one of its woken b
On 06/11/20 02:16, Yang Weijiang wrote:
Pass through all CET MSRs when the associated CET component (kernel vs.
user) is enabled to improve guest performance. All CET MSRs are context
switched, either via dedicated VMCS fields or XSAVES.
Co-developed-by: Zhang Yi Z
Signed-off-by: Zhang Yi Z
C
If QCA6391 chip (connected to PCIe0) is not powered at the PCIe probe
time, PCIe0 bus probe will timeout and the device will not be detected.
So use qca6391 as pcie0's bridge power-domain. This allows us to make
sure that QCA6391 chip is powered on before PCIe0 probe happens.
Signed-off-by: Dmitr
On 1/27/2021 10:41 PM, Prasanna Vengateshan wrote:
> LAN937x is a Multi-Port 100BASE-T1 Ethernet Physical Layer switch
> compliant with the IEEE 802.3bw-2015 specification. The device
> provides 100 Mbit/s transmit and receive capability over a single
> Unshielded Twisted Pair (UTP) cable. LAN
On 1/28/21 12:33 AM, Yang Shi wrote:
> Currently registered shrinker is indicated by non-NULL shrinker->nr_deferred.
> This approach is fine with nr_deferred at the shrinker level, but the
> following
> patches will move MEMCG_AWARE shrinkers' nr_deferred to memcg level, so their
> shrinker->nr_de
Greg KH, le jeu. 28 janv. 2021 08:54:16 +0100, a ecrit:
> On Thu, Jan 28, 2021 at 12:44:44AM +0100, Samuel Thibault wrote:
> > static struct kobj_attribute full_time_attribute =
> > __ATTR(full_time, 0644, spk_var_show, spk_var_store);
> > +static struct kobj_attribute flush_time_attribute =
>
On Thu, Jan 28, 2021, Paolo Bonzini wrote:
> Userspace that does not know about KVM_GET_MSR_FEATURE_INDEX_LIST will
> generally use the default value for MSR_IA32_ARCH_CAPABILITIES.
> When this happens and the host has tsx=on, it is possible to end up
> with virtual machines that have HLE and RTM d
On Tue, Jan 26, 2021 at 02:36:05PM -0800, Luck, Tony wrote:
> In some cases Linux might context switch to something else. Perhaps
> this task even gets picked up by another CPU to run the task work
> queued functions. But I imagine that the context switch should act
> as a barrier ... shouldn't it
> Hi Tomas,
>
> "Winkler, Tomas" wrote on Thu, 28 Jan 2021
> 08:53:43 +:
>
> > > Tomas,
> > >
> > > - Ursprüngliche Mail -
> > > >> >> Can you please explain a little more what devices are involved?
> > > >> >> Does it implement _get_device() and _put_device()?
> > > >> > No this is
On 06/11/20 02:16, Yang Weijiang wrote:
Control-flow Enforcement Technology (CET) provides protection against
Return/Jump-Oriented Programming (ROP/JOP) attack. There're two CET
sub-features: Shadow Stack (SHSTK) and Indirect Branch Tracking (IBT).
SHSTK is to prevent ROP programming and IBT is t
From: Colin Ian King
The variable err is being assigned a value that is never read,
the same error number is being returned at the error return
path via label err1. Clean up the code by removing the assignment.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
---
net/netfilt
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