Hi Arnaldo, Hi Jiri,
Kan's patch series for AlderLake perf core support has been upstreamed, so the interface will not be
changed any more.
For this perf tool series (v4), do you have any comments?
Thanks
Jin Yao
On 4/16/2021 10:04 PM, Jin Yao wrote:
AlderLake uses a hybrid architecture uti
Take "enum kvm_only_cpuid_leafs" in scattered specific CPUID helpers
(which is obvious in hindsight), and use "unsigned int" for leafs that
can be the kernel's standard "enum cpuid_leaf" or the aforementioned
KVM-only variant. Loss of the enum params is a bit disapponting, but
gcc obviously isn't
Added the Perf folks as this is a perf event probe. From the call trace:
[ 59.695946] [ cut here ]
[ 59.696788] WARNING: CPU: 0 PID: 1199 at kernel/tracepoint.c:143
tracepoint_probe_register_prio+0x2f0/0x360
[ 59.698385] Modules linked in: rapl input_leds qemu_fw_c
Miaohe Lin writes:
> Using current get/put_swap_device() to guard against concurrent swapoff
> for some swap ops, e.g. swap_readpage(), looks terrible because they
> might take really long time. This patch adds the percpu_ref support to
> serialize against concurrent swapoff. Also we remove the S
On Tue, Apr 20, 2021 at 08:42:53AM -0700, Luck, Tony wrote:
> On Mon, Apr 19, 2021 at 06:49:15PM -0700, Jue Wang wrote:
> > On Tue, 13 Apr 2021 07:43:20 +0900, Naoya Horiguchi wrote:
> > ...
> > > + * This function is intended to handle "Action Required" MCEs on already
> > > + * hardware poisoned
Miaohe Lin writes:
> When I was investigating the swap code, I found the below possible race
> window:
>
> CPU 1 CPU 2
> - -
> shmem_swapin
> swap_cluster_readahead
> if (likely(si->flags & (SWP_BLKDEV |
On Tue, Apr 20, 2021 at 03:08:03PM -0700, Axel Rasmussen wrote:
> In a previous commit, we added the mcopy_atomic_install_pte() helper.
> This helper does the job of setting up PTEs for an existing page, to map
> it into a given VMA. It deals with both the anon and shmem cases, as
> well as the sha
Miaohe Lin writes:
> The non_swap_entry() was used for working with VMA based swap readahead
> via commit ec560175c0b6 ("mm, swap: VMA based swap readahead").
At that time, the non_swap_entry() checking is necessary because the
function is called before checking that in do_swap_page().
> Then i
Currently, WriteBooster (WB) buffer is always flushed during hibern8. However,
this is inefficient because data in the WB buffer can be invalid due to
spatial locality of IO workload.
If the WB buffer flush is flushed in a batched manner, the amount of data
migration and power consumption can be re
From: Aili Yao
When the page is already poisoned, another memory_failure() call in the
same page now returns 0, meaning OK. For nested memory mce handling, this
behavior may lead to one mce looping, Example:
1. When LCME is enabled, and there are two processes A && B running on
different core X
From: Naoya Horiguchi
The previous patch solves the infinite MCE loop issue when multiple
MCE events races. The remaining issue is to make sure that all threads
processing Action Required MCEs send to the current processes the
SIGBUS with the proper virtual address and the error size.
This patc
From: Tony Luck
There can be races when multiple CPUs consume poison from the same
page. The first into memory_failure() atomically sets the HWPoison
page flag and begins hunting for tasks that map this page. Eventually
it invalidates those mappings and may send a SIGBUS to the affected
tasks.
B
Hi,
I updated the series based on previous feedbacks/discussions.
Changelog v2 -> v3:
- 1/3 aligned returning code with "goto out" approach,
- 3/3 added one Tested-by tag,
- 3/3 fixed comment on kill_accessing_process().
Changelog v1 -> v2:
- 3/3 fixed on initializing local variables and calcula
On Tue, Apr 20, 2021 at 12:16:57PM +0200, Borislav Petkov wrote:
> On Tue, Apr 20, 2021 at 07:46:26AM +, HORIGUCHI NAOYA(堀口 直也) wrote:
> > If you have any other suggestion, please let me know.
>
> Looks almost ok...
>
> > From: Tony Luck
> > Date: Tue, 20 Apr 2021 16:42:01 +0900
> > Subject:
Miaohe Lin writes:
> When I was investigating the swap code, I found the below possible race
> window:
>
> CPU 1 CPU 2
> - -
> do_swap_page
> if (data_race(si->flags & SWP_SYNCHRONOUS_IO)
> swap_readpage
>
On Tue, Apr 20, 2021 at 09:56:49PM +0530, Venkata Lakshmi Narayana Gubba wrote:
> Subject: dt-bindings: net: bluetooth: Convert to DT schema
This doesn't convert the generic binding or all bindings to DT schema
as the subject suggests, but the Qualcomm BT binding.
>
> Converted Qualcomm Bluetoot
The native pkg-config is always called which may result in incorrect
flags and paths being passed to the cross compiler. Implement
$(CROSS_COMPILE)pkg-config to avoid this issue.
Signed-off-by: Patrick Waterlander
---
Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Tue, 20 Apr 2021 16:31:51 +0300 you wrote:
> From: Vadym Kochan
>
> For some reason there might be a crash during ports creation if port
> events are handling at the same time because fw may send initial
> port event with
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Tue, 20 Apr 2021 18:16:14 +0100 you wrote:
> From: Colin Ian King
>
> The bit-masks used for the TXERRCH and RXERRCH (tx and rx error channels)
> are incorrect and always lead to a zero result. The mask values are
> current
Add support for MT8183's G72 Bifrost.
Signed-off-by: Nicolas Boichat
Reviewed-by: Tomeu Vizoso
Reviewed-by: Steven Price
---
(no changes since v7)
Changes in v7:
- Fix GPU ID in commit message
Changes in v6:
- Context conflicts, reflow the code.
- Use ARRAY_SIZE for power domains too.
Ch
GPUs with more than a single regulator (e.g. G72 on MT8183) will
require platform-specific handling for devfreq, for 2 reasons:
1. The opp core (drivers/opp/core.c:_generic_set_opp_regulator)
does not support multiple regulators, so we'll need custom
handlers.
2. Generally, platforms with
Add a basic GPU node for mt8183.
Signed-off-by: Nicolas Boichat
---
The binding we use with out-of-tree Mali drivers includes more
clocks, this is used for devfreq: the out-of-tree driver switches
clk_mux to clk_sub_parent (26Mhz), adjusts clk_main_parent, then
switches clk_mux back to clk_main_p
Define a compatible string for the Mali Bifrost GPU found in
Mediatek's MT8183 SoCs.
Signed-off-by: Nicolas Boichat
---
Changes in v12:
- binding: Fix min/maxItems logic (Rob Herring)
Changes in v11:
- binding: power-domain-names not power-domainS-names
Changes in v10:
- Fix the binding to
Hi!
This is just a rebase of the v11, untested (but it seems like
Neil Armstrong recently tested it), with small changes in
binding and dts. v11 cover follows:
Follow-up on the v5 [1], things have gotten significantly
better in the last year, thanks to the efforts on Bifrost
support by the Collab
On Tue, Apr 20, 2021 at 9:01 PM Rob Herring wrote:
>
> On Mon, Jan 25, 2021 at 7:18 PM Nicolas Boichat wrote:
> >
> > Define a compatible string for the Mali Bifrost GPU found in
> > Mediatek's MT8183 SoCs.
> >
> > Signed-off-by: Nicolas Boichat
> > ---
> >
> > Changes in v11:
> > - binding: po
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Tue, 20 Apr 2021 13:27:30 +0100 you wrote:
> From: Colin Ian King
>
> The variable err is being initialized with a value that is
> never read and it is being updated later with a new value. The
> initialization is red
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Tue, 20 Apr 2021 12:29:29 +0200 you wrote:
> The commit c329e5afb42f ("net: phy: at803x: select correct page on
> config init") selects the copper page during probe. This fails if the
> copper page was already selected.
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Tue, 20 Apr 2021 13:07:27 +0200 you wrote:
> As reported by syzbot [1], there is a memory leak while closing the
> socket. We partially solved this issue with commit ac03046ece2b
> ("vsock/virtio: free packets during the sock
Hi Khaled,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on kdave/for-next]
[also build test WARNING on v5.12-rc8 next-20210420]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--bas
On Tue, Apr 20, 2021 at 11:33 PM Neil Armstrong wrote:
>
> On 26/01/2021 02:17, Nicolas Boichat wrote:
> > Add a basic GPU node for mt8183.
> >
> > Signed-off-by: Nicolas Boichat
> > ---
> > The binding we use with out-of-tree Mali drivers includes more
> > clocks, this is used for devfreq: the o
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 11:54 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c:685: warning: expecting prototype
> > for cs_parser_fini(). Prototype
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 11:54 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:169: warning: Function parameter
> > or member 'sched_score' not des
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 11:53 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:311: warning: expecting prototype
> > for amdgpu_copy_ttm_mem_to_mem(
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Tue, 20 Apr 2021 16:11:33 +0300 you wrote:
> Fix phase offset calculation.
>
> Signed-off-by: Radu Pirea (NXP OSS)
> ---
> drivers/net/phy/nxp-c45-tja11xx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Tue, 20 Apr 2021 16:28:21 +0200 you wrote:
> Now that enetc supports flow control we have to make sure the settings in
> the IERB are correct. Therefore, we actually depend on the enetc-ierb
> module. Previously it was p
On 4/20/21 4:53 PM, Dan Williams wrote:
On Tue, Apr 20, 2021 at 4:12 PM Kuppuswamy, Sathyanarayanan
wrote:
[..]
Also, do you *REALLY* need to do this from assembly? Can't it be done
in the C wrapper?
Its common for all use cases of TDVMCALL (vendor specific, in/out, etc).
so added
it here.
Applied. thanks!
Alex
On Fri, Apr 16, 2021 at 11:53 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c:73: warning: expecting prototype
> > for amdgpu_dummy_page_init(). P
On Tue, Apr 20, 2021 at 12:31 AM Zou Wei wrote:
>
> The sparse tool complains as follows:
>
> tools/testing/nvdimm/test/iomap.c:65:14: warning:
> symbol '__nfit_test_ioremap' was not declared. Should it be static?
>
> This symbol is not used outside of iomap.c, so this
> commit marks it static.
>
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 11:52 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c:444: warning: Function
> > parameter or member 'sched_score' not de
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 11:51 AM Christian König
wrote:
>
> Am 16.04.21 um 16:37 schrieb Lee Jones:
> > Fixes the following W=1 kernel build warning(s):
> >
> > drivers/gpu/drm/radeon/radeon_device.c:1101: warning: This comment starts
> > with '/**', but isn't a kernel-
On 4/20/21 18:38, Darrick J. Wong wrote:
> On Tue, Apr 20, 2021 at 06:06:52PM -0500, Gustavo A. R. Silva wrote:
>> In preparation to enable -Wimplicit-fallthrough for Clang, fix
>> the following warnings by replacing /* fall through */ comments,
>> and its variants, with the new pseudo-keyword m
Applied. Thanks!
Alex
On Fri, Apr 16, 2021 at 10:38 AM Lee Jones wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c: In function
> ‘amdgpu_device_suspend’:
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:3733:6: warning: variable ‘r’ set
On Tue, Apr 20, 2021 at 4:12 PM Kuppuswamy, Sathyanarayanan
wrote:
[..]
> >>> Also, do you *REALLY* need to do this from assembly? Can't it be done
> >>> in the C wrapper?
> >> Its common for all use cases of TDVMCALL (vendor specific, in/out, etc).
> >> so added
> >> it here.
> >
Can I ask a fa
Hi, Hsin-Yi:
Hsin-Yi Wang 於 2021年4月20日 週二 下午5:05寫道：
>
> On Fri, Apr 9, 2021 at 12:53 PM Hsin-Yi Wang wrote:
> >
> > drm_dev_register() sets connector->registration_state to
> > DRM_CONNECTOR_REGISTERED and dev->registered to true. If
> > drm_connector_set_panel_orientation() is first called afte
On 4/20/21 4:12 PM, Kuppuswamy, Sathyanarayanan wrote:
> On 4/20/21 12:59 PM, Dave Hansen wrote:
>> On 4/20/21 12:20 PM, Kuppuswamy, Sathyanarayanan wrote:
> approach is, it adds a few extra instructions for every
> TDCALL use case when compared to distributed checks. Although
> it's a
weeks ago
config: s390-randconfig-s032-20210420 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
On 4/14/21 11:40 PM, David Gow wrote:
The kernel now has a number of testing and debugging tools, and we've
seen a bit of confusion about what the differences between them are.
Add a basic documentation outlining the testing tools, when to use each,
and how they interact.
This is a pretty quick
Quoting Kuogee Hsieh (2021-04-16 10:38:51)
> Maybe when the cable is disconnected the DP phy should be shutdown and
> some bit in the phy could effectively "cut off" the aux channel and then
> NAKs would start coming through here in the DP controller I/O register
> space. This patch have DP aux cha
On Tue, Apr 20, 2021 at 06:06:52PM -0500, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix
> the following warnings by replacing /* fall through */ comments,
> and its variants, with the new pseudo-keyword macro fallthrough:
>
> fs/xfs/libxfs/xfs_alloc.c:
On Thu, Apr 15, 2021 at 03:20:57PM -0700, Sean Christopherson wrote:
> This is a continuation of Wanpeng's series[1] to fix tick-based CPU time
> accounting on x86, with my cleanups[2] bolted on top. The core premise of
> Wanpeng's patches are preserved, but they are heavily stripped down.
> Speci
On Wed, Apr 21, 2021, Frederic Weisbecker wrote:
> On Thu, Apr 15, 2021 at 03:21:00PM -0700, Sean Christopherson wrote:
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 16fb39503296..e4d475df1d4a 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> > @@ -9230,6 +9230
On Tue, Apr 20, 2021, Sean Christopherson wrote:
> On Tue, Apr 20, 2021, Paolo Bonzini wrote:
> > On 20/04/21 22:16, Sean Christopherson wrote:
> > > On Tue, Apr 20, 2021, Sean Christopherson wrote:
> > > > On Tue, Apr 20, 2021, Paolo Bonzini wrote:
> > > > > In this particular case, if userspace s
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Mon, 19 Apr 2021 18:25:30 +0800 you wrote:
> ALWAYS_GUARD_BAND_SCH_Q bit in TAS config register is descripted as
> this:
> 0: Guard band is implemented for nonschedule queues to schedule
> queues transitio
On Tue, Apr 20, 2021 at 04:04:57PM -0600, Alex Williamson wrote:
> > The migration control registers must be on a different VF from the VF
> > being plugged into a guest and the two VFs have to be in different
> > IOMMU groups to ensure they are isolated from each other.
>
> I think that's a solu
On Mon, 2021-03-01 at 18:41 +0530, Sumit Garg wrote:
> Current trusted keys framework is tightly coupled to use TPM device
> as an underlying implementation which makes it difficult for
> implementations like Trusted Execution Environment (TEE) etc. to
> provide trusted keys support in case platfor
On Thu, Apr 15, 2021 at 03:21:00PM -0700, Sean Christopherson wrote:
> From: Wanpeng Li
>
> When using tick-based accounting, defer the call to account guest time
> until after servicing any IRQ(s) that happened in the guest or
> immediately after VM-Exit. Tick-based accounting of vCPU time reli
On 4/20/21 12:59 PM, Dave Hansen wrote:
On 4/20/21 12:20 PM, Kuppuswamy, Sathyanarayanan wrote:
approach is, it adds a few extra instructions for every
TDCALL use case when compared to distributed checks. Although
it's a bit less efficient, it's worth it to make the code more
readable.
What
In preparation to enable -Wimplicit-fallthrough for Clang, fix
the following warnings by replacing /* fall through */ comments,
and its variants, with the new pseudo-keyword macro fallthrough:
fs/xfs/libxfs/xfs_alloc.c:3167:2: warning: unannotated fall-through between
switch labels [-Wimplicit-fa
On Tue, Apr 20, 2021 at 3:57 PM Josh Poimboeuf wrote:
>
> On Tue, Apr 20, 2021 at 01:25:43PM -0700, Sami Tolvanen wrote:
> > On Tue, Apr 20, 2021 at 11:14 AM Josh Poimboeuf wrote:
> > >
> > > On Fri, Apr 16, 2021 at 01:38:30PM -0700, Sami Tolvanen wrote:
> > > > With -ffunction-sections, Clang ca
On Tue, Apr 20, 2021 at 8:45 AM Kuniyuki Iwashima wrote:
>
> This patch adds a test for BPF_SK_REUSEPORT_SELECT_OR_MIGRATE and
> removes 'static' from settimeo() in network_helpers.c.
>
> Signed-off-by: Kuniyuki Iwashima
> ---
Almost everything in prog_tests/migrate_reuseport.c should be static,
On Tue, Apr 20, 2021 at 01:25:43PM -0700, Sami Tolvanen wrote:
> On Tue, Apr 20, 2021 at 11:14 AM Josh Poimboeuf wrote:
> >
> > On Fri, Apr 16, 2021 at 01:38:30PM -0700, Sami Tolvanen wrote:
> > > With -ffunction-sections, Clang can generate a jump beyond the end of
> > > a section when the sectio
On Mon, Apr 19, 2021 at 11:39:43PM -0700, Ilya Lipnitskiy wrote:
> This mostly reverts commit 99bca615d895 ("MIPS: pci-legacy: use generic
> pci_enable_resources"). Fixes regressions such as:
> ata_piix :00:0a.1: can't enable device: BAR 0 [io 0x01f0-0x01f7] not
> claimed
> ata_piix:
On Tue, Apr 20, 2021, Paolo Bonzini wrote:
> On 20/04/21 22:16, Sean Christopherson wrote:
> > On Tue, Apr 20, 2021, Sean Christopherson wrote:
> > > On Tue, Apr 20, 2021, Paolo Bonzini wrote:
> > > > In this particular case, if userspace sets the bit in CPUID2 but doesn't
> > > > handle KVM_EXIT_H
On Tue, Apr 20, 2021 at 05:19:52PM +0200, Neil Armstrong wrote:
> On 20/04/2021 17:13, Hans Verkuil wrote:
> > On 16/04/2021 13:38, Neil Armstrong wrote:
> >> On 16/04/2021 11:58, Laurent Pinchart wrote:
> >>> Hi Neil,
> >>>
> >>> On Fri, Apr 16, 2021 at 11:27:35AM +0200, Neil Armstrong wrote:
> >>
On Mon, 2021-04-19 at 17:31 +0800, Liwei Song wrote:
> It may need hold Global Config Lock a longer time when download DDP
> package file, extend the timeout value to 5000ms to ensure that
> download can be finished before other AQ command got time to run,
> this will fix the issue below when probe
ation. Reverting this commit, together with
> 97ba62b27867 ("perf: Add support for SIGTRAP on perf events") to let it
> compile, on top of next-20210420 fixes the issue.
Thanks, this is weird for sure and nothing in particular stands out.
I have questions:
-- Can you please share
From: Kan Liang
The counter value of a perf task may leak to another RDPMC task.
For example, a perf stat task as below is running on CPU 0.
perf stat -e 'branches,cycles' -- taskset -c 0 ./workload
In the meantime, an RDPMC task, which is also running on CPU 0, may read
the GP counters per
Introduce changes to add ESP connection tracking helper to netfilter
conntrack. The connection tracking of ESP is based on IPsec SPIs. The
underlying motivation for this patch was to allow multiple VPN ESP
clients to be distinguished when using NAT.
Added config flag CONFIG_NF_CT_PROTO_ESP to enab
On Mon, Apr 19, 2021 at 9:03 PM Leonardo Bras wrote:
>
> On Mon, 2021-04-19 at 20:39 -0500, Rob Herring wrote:
> > On Mon, Apr 19, 2021 at 7:35 PM Leonardo Bras wrote:
> > >
> > > On Mon, 2021-04-19 at 10:44 -0500, Rob Herring wrote:
> > > > On Fri, Apr 16, 2021 at 3:58 PM Leonardo Bras
> > > >
> -Original Message-
> From: Tim Chen [mailto:tim.c.c...@linux.intel.com]
> Sent: Wednesday, April 21, 2021 6:32 AM
> To: Song Bao Hua (Barry Song) ;
> catalin.mari...@arm.com; w...@kernel.org; r...@rjwysocki.net;
> vincent.guit...@linaro.org; b...@alien8.de; t...@linutronix.de;
> mi...@r
Manivannan Sadhasivam writes:
> The current documentation about the device class is out of date such
> that it refers to non-existent APIs and structures. This commit updates
> them to the current device class APIs and structures, removes wordings
> that no longer valid while trying to keep the o
On Fri, Apr 16, 2021 at 02:18:29PM -0700, Saravanan D wrote:
> From: Calvin Owens
>
> While the maximum size of each ramdisk is defined either
> as a module parameter, or compile time default, it's impossible
> to know how many pages have currently been allocated by each
> ram%d device, since the
On 4/20/21 16:23, Jens Axboe wrote:
> Applied, thanks.
Awesome. :)
Thanks
--
Gustavo
On 4/20/21 16:32, Mimi Zohar wrote:
> Applied to
> git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git
> next-integrity
Thanks, Mimi.
--
Gustavo
On 4/20/21 17:13, Mike Snitzer wrote:
> I've picked it up for 5.13, thanks.
Thanks, Mike.
--
Gustavo
On Mon, Apr 12, 2021 at 04:24:41PM -0500, Jassi Brar wrote:
> On Mon, Mar 8, 2021 at 2:20 PM mark gross wrote:
> >
> > On Fri, Mar 05, 2021 at 03:01:40PM -0600, Rob Herring wrote:
> > > On Fri, Feb 12, 2021 at 02:22:34PM -0800, mgr...@linux.intel.com wrote:
> > > > From: Daniele Alessandrelli
> >
On Tue, Apr 20 2021 at 4:15pm -0400,
Gustavo A. R. Silva wrote:
> Hi all,
>
> Friendly ping: who can take this, please?
>
> Thanks
> --
> Gustavo
>
> On 11/20/20 12:35, Gustavo A. R. Silva wrote:
> > In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> > by explicitly ad
weeks ago
config: s390-randconfig-s032-20210420 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
This is a preparatory commit. In the future, we want to be able to setup
alias mappings for area_src and area_dst in the shmem test, like we do
in the hugetlb_shared test. With a VMA obtained via
mmap(MAP_ANONYMOUS | MAP_SHARED), it isn't clear how to do this.
So, mmap() with an fd, so we can crea
On Tue, 20 Apr 2021 09:59:57 -0300
Jason Gunthorpe wrote:
> On Tue, Apr 20, 2021 at 08:50:12PM +0800, liulongfang wrote:
> > On 2021/4/19 20:33, Jason Gunthorpe wrote:
> > > On Mon, Apr 19, 2021 at 08:24:40PM +0800, liulongfang wrote:
> > >
> > >>> I'm also confused how this works securely a
Generally, the documentation we wrote for hugetlbfs-based minor faults
still all applies. The only missing piece is to mention the new feature
flag which indicates that the kernel supports this for shmem as well.
Signed-off-by: Axel Rasmussen
---
Documentation/admin-guide/mm/userfaultfd.rst | 3
> -Original Message-
> From: Dave Hansen
> Sent: Monday, April 12, 2021 2:33 PM
> To: mgr...@linux.intel.com; markgr...@kernel.org; a...@arndb.de; b...@suse.de;
> damien.lem...@wdc.com; dragan.cve...@xilinx.com;
> gre...@linuxfoundation.org; cor...@lwn.net; palmerdabb...@google.com;
> pa
In a previous commit, we added the mcopy_atomic_install_pte() helper.
This helper does the job of setting up PTEs for an existing page, to map
it into a given VMA. It deals with both the anon and shmem cases, as
well as the shared and private cases.
In other words, shmem_mcopy_atomic_pte() duplica
Enable test_uffdio_minor for test_type == TEST_SHMEM, and modify the
test slightly to pass in / check for the right feature flags.
Signed-off-by: Axel Rasmussen
---
tools/testing/selftests/vm/userfaultfd.c | 29
1 file changed, 25 insertions(+), 4 deletions(-)
diff --gi
Currently, the context (fds, mmap-ed areas, etc.) are global. Each test
mutates this state in some way, in some cases really "clobbering it"
(e.g., the events test mremap-ing area_dst over the top of area_src, or
the minor faults tests overwriting the count_verify values in the test
areas). We run
Previously, we just allocated two shm areas: area_src and area_dst. With
this commit, change this so we also allocate area_src_alias, and
area_dst_alias.
area_*_alias and area_* (respectively) point to the same underlying
physical pages, but are different VMAs. In a future commit in this
series, w
Previously, we did a dance where we had one calling path in
userfaultfd.c (mfill_atomic_pte), but then we split it into two in
shmem_fs.h (shmem_{mcopy_atomic,mfill_zeropage}_pte), and then rejoined
into a single shared function in shmem.c (shmem_mfill_atomic_pte).
This is all a bit overly complex
With this change, userspace can resolve a minor fault within a
shmem-backed area with a UFFDIO_CONTINUE ioctl. The semantics for this
match those for hugetlbfs - we look up the existing page in the page
cache, and install a PTE for it.
This commit introduces a new helper: mcopy_atomic_install_pte.
This patch allows shmem-backed VMAs to be registered for minor faults.
Minor faults are appropriately relayed to userspace in the fault path,
for VMAs with the relevant flag.
This commit doesn't hook up the UFFDIO_CONTINUE ioctl for shmem-backed
minor faults, though, so userspace doesn't yet have
Minimizing header file inclusion is desirable. In this case, we can do
so just by forward declaring the enumeration our signature relies upon.
Reviewed-by: Peter Xu
Signed-off-by: Axel Rasmussen
---
include/linux/hugetlb.h | 4 +++-
mm/hugetlb.c| 1 +
2 files changed, 4 insertions(+
Base
This series is based on (and therefore should apply cleanly to) the tag
"v5.12-rc7-mmots-2021-04-11-20-49", additionally with Peter's selftest cleanup
series applied first:
https://lore.kernel.org/patchwork/cover/1412450/
Changelog
=
v3->v4:
- Fix handling of the shmem private
From: Colin Ian King
There are a few function prototypes that are missing a void parameter,
fix this by adding it in.
Signed-off-by: Colin Ian King
---
tools/testing/selftests/vm/mremap_dontunmap.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/testing/sel
weeks ago
config: s390-randconfig-s032-20210420 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
Quoting Kuogee Hsieh (2021-04-16 13:27:57)
> Some dongle may generate more than one irq_hpd events in a short period of
> time. This patch will treat those irq_hpd events as single one and service
> only one irq_hpd event.
Why is it bad to get multiple irq_hpd events in a short period of time?
Ple
weeks ago
config: s390-randconfig-s032-20210420 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
We can use the vmlinux_build_id array here now instead of open coding
it. This mostly consolidates code.
Cc: Jiri Olsa
Cc: Alexei Starovoitov
Cc: Jessica Yu
Cc: Evan Green
Cc: Hsin-Yi Wang
Cc: Dave Young
Cc: Baoquan He
Cc: Vivek Goyal
Cc:
Signed-off-by: Stephen Boyd
---
include/linux/cr
Sometimes if you're using tools that have linked things improperly or
have new features/sections that older tools don't expect you'll see
warnings printed to stderr. We don't really care about these warnings,
so let's just silence these messages to cleanup output of this script.
Cc: Jiri Olsa
Cc:
Kernel doc should use "Return:" instead of "Returns" to properly reflect
the return values.
Cc: Jiri Olsa
Cc: Alexei Starovoitov
Cc: Jessica Yu
Cc: Evan Green
Cc: Hsin-Yi Wang
Signed-off-by: Stephen Boyd
---
lib/buildid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/l
Add "auto" to the usage message so that it's a little clearer that you
can pass "auto" as the second argument. When passing "auto" the script
tries to find the base path automatically instead of requiring it be
passed on the commandline. Also use [] to indicate the
variable argument and that it is
Now that stacktraces contain the build ID information we can update this
script to use debuginfod-find to locate the debuginfo for the vmlinux
and modules automatically. This can replace the existing code that
requires specifying a path to vmlinux or tries to find the vmlinux and
modules automatica
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