Hi all,
This is very useful.
On Wed, 28 May 2025 at 16:51, Arnaldo Carvalho de Melo wrote:
>
> On Wed, May 28, 2025 at 11:28:54AM +0200, Toke Høiland-Jørgensen wrote:
> > Mina Almasry writes:
> > > On Mon, May 26, 2025 at 5:51 AM Toke Høiland-Jørgensen
> > > wrote:
> > >> Back when you posted
On Wed, Jun 04, 2025 at 09:39:30AM +0200, David Hildenbrand wrote:
> On 03.06.25 21:22, Lorenzo Stoakes wrote:
> > The walk_page_range_novma() function is rather confusing - it supports two
> > modes, one used often, the other used only for debugging.
> >
> > The first mode is the common case of t
On 04.06.25 10:07, Mike Rapoport wrote:
On Wed, Jun 04, 2025 at 09:39:30AM +0200, David Hildenbrand wrote:
On 03.06.25 21:22, Lorenzo Stoakes wrote:
The walk_page_range_novma() function is rather confusing - it supports two
modes, one used often, the other used only for debugging.
The first mo
> So this seems to be undoing commit 80fa614e2fbc ("selftests: timers:
> Remove local NSEC_PER_SEC and USEC_PER_SEC defines")
Thanks John, I somehow missed 80fa614e2fbc and was wondering how
this had got in.
> Would it make more sense to fix the NSEC_PER_SEC definition in time64.h to a
> LL?
I wa
The following changes since commit 0af2f6be1b4281385b618cb86ad946eded089ac8:
Linux 6.15-rc1 (2025-04-06 13:11:33 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx.git
tags/spdx-6.16-rc1
for you to fetch changes up to 59c11a7a9a138a28c7
Smita,
Thanks for your awesome work. I just tested the scenarios you listed, and they
work as expected. Thanks again.
(Minor comments inlined)
Tested-by: Li Zhijian
To the CXL community,
The scenarios mentioned here essentially cover what a correct firmware may
provide. However,
I would lik
On 6/2/25 12:55 PM, Masahiro Yamada wrote:
> The __mod_device_table__* symbols are only parsed by modpost to generate
> MODULE_ALIAS() entries from MODULE_DEVICE_TABLE().
>
> Therefore, these symbols do not need to be globally visible, or globally
> unique.
>
> If they are in the global scope, we
On Wed, Jun 04, 2025 at 01:53:22PM +0800, Rong Tao wrote:
> From: Rong Tao
>
> Since commit 97d06802d10a ("sysfs: constify bin_attribute argument of
> bin_attribute::read/write()"), make bin_attribute parameter of
> bin_attribute::read/write() const.
hi,
there's already fix for this in bpf/maste
Hi all,
a simpler version of this series has been merged, and so I am now taking a
look at the issue I have put aside in the merged version: dealing with more
specific data layout for arguments passed on stack. For example, a function
can pass small structs on stack, but this need special care when
On Wed, May 28, 2025 at 10:44:42PM +0200, Michal Luczaj wrote:
Return a bitmap of registered vsock transports. As guesstimated by grepping
/proc/kallsyms (CONFIG_KALLSYMS=y) for known symbols of type `struct
virtio_transport`.
Suggested-by: Stefano Garzarella
Signed-off-by: Michal Luczaj
---
t
On Wed, Jun 04, 2025 at 11:07:05AM +0300, Mike Rapoport wrote:
> On Wed, Jun 04, 2025 at 09:39:30AM +0200, David Hildenbrand wrote:
> > On 03.06.25 21:22, Lorenzo Stoakes wrote:
> > > The walk_page_range_novma() function is rather confusing - it supports two
> > > modes, one used often, the other u
On Wed, May 28, 2025 at 10:44:41PM +0200, Michal Luczaj wrote:
Create a socket and bind() it. If binding failed, gracefully return an
error code while preserving `errno`.
Base vsock_bind() on top of it.
Suggested-by: Stefano Garzarella
Signed-off-by: Michal Luczaj
---
tools/testing/vsock/util
On 6/4/25 16:53, Jiri Olsa wrote:
On Wed, Jun 04, 2025 at 01:53:22PM +0800, Rong Tao wrote:
From: Rong Tao
Since commit 97d06802d10a ("sysfs: constify bin_attribute argument of
bin_attribute::read/write()"), make bin_attribute parameter of
bin_attribute::read/write() const.
hi,
there's alre
On 04/06/2025 06:19, Smita Koralahalli wrote:
> Introduce a pci_loaded flag similar to mem_active, and define
> mark_cxl_pci_loaded() to indicate when the PCI driver has initialized.
>
> This will be used by other CXL components, such as cxl_acpi and the soft
> reserved resource handling logic,
On 6/3/2025 11:37 PM, Qi Xi wrote:
> Hi Joel,
>
> The patch works as expected. Previously, the issue triggered a soft lockup
> within ~10 minutes, but after applying the fix, the system ran stably for 30+
> minutes without any issues.
Great to hear! Thanks for testing. I/we will roll this into a
On Wed, May 28, 2025 at 10:44:43PM +0200, Michal Luczaj wrote:
Increase the coverage of test for UAF due to socket unbinding, and losing
transport in general. It's a follow up to commit 301a62dfb0d0 ("vsock/test:
Add test for UAF due to socket unbinding") and discussion in [1].
The idea remains
On Wed, Jun 04, 2025 at 09:39:30AM +0200, David Hildenbrand wrote:
> On 03.06.25 21:22, Lorenzo Stoakes wrote:
> > The walk_page_range_novma() function is rather confusing - it supports two
> > modes, one used often, the other used only for debugging.
> >
> > The first mode is the common case of tr
On 04/06/2025 06:19, Smita Koralahalli wrote:
> drivers/cxl/acpi.c | 23 +++
> drivers/cxl/core/suspend.c | 21 +
> drivers/cxl/cxl.h | 2 ++
> 3 files changed, 46 insertions(+)
>
> diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.
On 28/05/2025 21.46, Mina Almasry wrote:
On Wed, May 28, 2025 at 2:28 AM Toke Høiland-Jørgensen wrote:
Mina Almasry writes:
On Mon, May 26, 2025 at 5:51 AM Toke Høiland-Jørgensen wrote:
Fast path results:
no-softirq-page_pool01 Per elem: 11 cycles(tsc) 4.368 ns
ptr_ring results:
no-so
On Tue, Jun 03, 2025 at 01:18:25AM +0900, Masahiro Yamada wrote:
> > > > Before these patches this was not a problem as non-unique characters are
> > > > in separate object files when the module is compiled separately.
> > > >
> > > > But when the modules are compiled into the kernel, there is a sy
On Wed, Jun 4, 2025 at 5:37 AM Peng Fan (OSS) wrote:
>
> From: Peng Fan
>
> Add imx_rproc_cfg_imx95_m7 and address(TCM and DDR) mapping
> Add i.MX95 of_device_id entry
>
> Signed-off-by: Peng Fan
Reviewed-by: Daniel Baluta
On Wed, Jun 04, 2025 at 10:09:05AM +0100, Lorenzo Stoakes wrote:
> Nice idea to move to mm/internal.h also :) I like this...
>
> Will fixup on respin
Dumb question but IIUC, walk_page_range_novma() will only be used by
ptdump from now on, so why not stick it into mm/ptdump.c, which is where
the o
On Wed, Jun 04, 2025 at 02:26:57PM +0200, Oscar Salvador wrote:
> On Wed, Jun 04, 2025 at 10:09:05AM +0100, Lorenzo Stoakes wrote:
> > Nice idea to move to mm/internal.h also :) I like this...
> >
> > Will fixup on respin
>
> Dumb question but IIUC, walk_page_range_novma() will only be used by
> pt
Hi Peng,
Thanks a lot for the patches. Comments inline:
On Wed, Jun 4, 2025 at 5:36 AM Peng Fan (OSS) wrote:
>
> From: Peng Fan
>
> i.MX95 features a Cortex-M33 core, six Cortex-A55 cores, and
> one Cortex-M7 core. The System Control Management Interface(SCMI)
> firmware runs on the M33 core. T
> Subject: Re: [PATCH 2/3] remoteproc: imx_rproc: Add support for
> System Manager API
>
> Hi Peng,
>
> Thanks a lot for the patches. Comments inline:
>
> On Wed, Jun 4, 2025 at 5:36 AM Peng Fan (OSS)
> wrote:
> >
> > From: Peng Fan
> >
> > i.MX95 features a Cortex-M33 core, six Cortex-A55 cor
On 6/4/25 07:37, Jason Wang wrote:
On Tue, Jun 3, 2025 at 11:07 PM Bui Quang Minh wrote:
In virtio-net, we have not yet supported multi-buffer XDP packet in
zerocopy mode when there is a binding XDP program. However, in that
case, when receiving multi-buffer XDP packet, we skip the XDP program
The walk_page_range_novma() function is rather confusing - it supports two
modes, one used often, the other used only for debugging.
The first mode is the common case of traversal of kernel page tables, which
is what nearly all callers use this for.
Secondly it provides an unusual debugging inter
On Wed, Jun 4, 2025 at 7:21 AM Lorenzo Stoakes
wrote:
>
> The walk_page_range_novma() function is rather confusing - it supports two
> modes, one used often, the other used only for debugging.
>
> The first mode is the common case of traversal of kernel page tables, which
> is what nearly all call
On 6/4/25 2:40 AM, Zhijian Li (Fujitsu) wrote:
>
>
> On 04/06/2025 06:19, Smita Koralahalli wrote:
>> drivers/cxl/acpi.c | 23 +++
>> drivers/cxl/core/suspend.c | 21 +
>> drivers/cxl/cxl.h | 2 ++
>> 3 files changed, 46 insertions
The per-CPU data section is handled differently than the other sections.
The memory allocations requires a special __percpu pointer and then the
section is copied into the view of each CPU. Therefore the SHF_ALLOC
flag is removed to ensure move_module() skips it.
Later, relocations are applied and
The pull request you sent on Wed, 4 Jun 2025 10:36:44 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx.git
> tags/spdx-6.16-rc1
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/f5ebe7bb87e04537b37573f0a2516baa90ee23c0
Thank you!
--
Deet-doot-dot, I
On 03.06.25 21:22, Lorenzo Stoakes wrote:
The walk_page_range_novma() function is rather confusing - it supports two
modes, one used often, the other used only for debugging.
The first mode is the common case of traversal of kernel page tables, which
is what nearly all callers use this for.
..
On Tue, Jun 3, 2025 at 8:09 AM Bui Quang Minh wrote:
>
> In virtio-net, we have not yet supported multi-buffer XDP packet in
> zerocopy mode when there is a binding XDP program. However, in that
> case, when receiving multi-buffer XDP packet, we skip the XDP program
> and return XDP_PASS. As a res
On 6/4/25 2:02 AM, Alexis Lothoré wrote:
Hi all,
a simpler version of this series has been merged, and so I am now taking a
look at the issue I have put aside in the merged version: dealing with more
specific data layout for arguments passed on stack. For example, a function
can pass small struc
On Sat, May 24, 2025 at 1:36 AM Suresh K C
wrote:
>
> From: Suresh K C
>
> Add a test case to verify cachestat behavior with memory-mapped files
> using mmap(). This ensures that pages accessed via mmap are correctly
> accounted for in the page cache.
>
> Also add a test for /proc/cpuinfo to vali
On 6/3/2025 4:45 PM, Dave Jiang wrote:
On 6/3/25 3:19 PM, Smita Koralahalli wrote:
Introduce a waitqueue mechanism to coordinate initialization between the
cxl_pci and cxl_mem drivers.
Launch a background worker from cxl_acpi_probe() that waits for both
drivers to complete initialization befo
needs_teardown is a device flag that indicates when virtual queues need
to be recreated. This happens for certain configuration changes: queue
size and some specific features.
Currently, the needs_teardown state can be incorrectly reset by
subsequent .set_vq_num() calls. For example, for 1 rx VQ w
Hi Zhijian,
Thanks for testing my patches.
On 6/4/2025 1:43 AM, Zhijian Li (Fujitsu) wrote:
Smita,
Thanks for your awesome work. I just tested the scenarios you listed, and they
work as expected. Thanks again.
(Minor comments inlined)
Tested-by: Li Zhijian
To the CXL community,
The scena
On 6/4/25 11:07, Stefano Garzarella wrote:
> On Wed, May 28, 2025 at 10:44:42PM +0200, Michal Luczaj wrote:
>> +static int __get_transports(void)
>> +{
>> +/* Order must match transports defined in util.h.
>> + * man nm: "d" The symbol is in the initialized data section.
>> + */
>> +
On 6/4/25 11:37, Stefano Garzarella wrote:
> On Wed, May 28, 2025 at 10:44:43PM +0200, Michal Luczaj wrote:
>> +static bool test_stream_transport_uaf(int cid)
>> {
>> int sockets[MAX_PORT_RETRIES];
>> struct sockaddr_vm addr;
>> -int fd, i, alen;
>> +socklen_t alen;
>> +int fd
On 6/3/2025 6:49 PM, Dave Jiang wrote:
>
>
> On 6/3/25 3:19 PM, Smita Koralahalli wrote:
>> Add a NULL check in is_cxl_region() to prevent potential null pointer
>> dereference if a caller passes a NULL device. This change ensures the
>> function safely returns false instead of triggering undefin
Hi Zenghui,
On Tue, 3 Jun 2025, Zenghui Yu wrote:
On 2025/5/27 22:24, Sebastian Ott wrote:
Some small fixes for arch_timer_edge_cases that I stumbled upon
while debugging failures for this selftest on ampere-one.
Changes since v1: modified patch 3 based on suggestions from Marc.
I've done som
On Wed, 4 Jun 2025, Sebastian Ott wrote:
On Tue, 3 Jun 2025, Zenghui Yu wrote:
On 2025/5/27 22:24, Sebastian Ott wrote:
Some small fixes for arch_timer_edge_cases that I stumbled upon
while debugging failures for this selftest on ampere-one.
Changes since v1: modified patch 3 based on sugg
On 03/06/2025 5:12 am, Andrew Morton wrote:
> On Tue, 3 Jun 2025 02:22:32 +0300 Khaled Elnaggar
> wrote:
>
>> The hugevm tests 'charge_reserved_hugetlb.sh' and
>> 'hugetlb_reparenting_test.sh'
>> depend on the 'write_to_hugetlbfs' binary to simulate writes to hugetlbfs
>> while checking reserv
Reading /proc/pid/maps requires read-locking mmap_lock which prevents any
other task from concurrently modifying the address space. This guarantees
coherent reporting of virtual address ranges, however it can block
important updates from happening. Oftentimes /proc/pid/maps readers are
low priority
The /proc/pid/maps file is generated page by page, with the mmap_lock
released between pages. This can lead to inconsistent reads if the
underlying vmas are concurrently modified. For instance, if a vma split
or merge occurs at a page boundary while /proc/pid/maps is being read,
the same vma might
Test that /proc/pid/maps does not report unexpected holes in the address
space when a vma at the edge of the page is being concurrently remapped.
This remapping results in the vma shrinking and expanding from under the
reader. We should always see either shrunk or expanded (original) version
of th
Test that /proc/pid/maps does not report unexpected holes in the address
space when we concurrently remap a part of a vma into the middle of
another vma. This remapping results in the destination vma being split
into three parts and the part in the middle being patched back from,
all done concurren
Extend /proc/pid/maps tearing test to verify PROCMAP_QUERY ioctl operation
correctness while the vma is being concurrently modified.
Signed-off-by: Suren Baghdasaryan
---
tools/testing/selftests/proc/proc-pid-vm.c | 60 ++
1 file changed, 60 insertions(+)
diff --git a/tools/
Add verbose mode to the proc tests to print debugging information.
Usage: proc-pid-vm -v
Signed-off-by: Suren Baghdasaryan
---
tools/testing/selftests/proc/proc-pid-vm.c | 154 +++--
1 file changed, 141 insertions(+), 13 deletions(-)
diff --git a/tools/testing/selftests/proc/pro
With maple_tree supporting vma tree traversal under RCU and per-vma
locks, /proc/pid/maps can be read while holding individual vma locks
instead of locking the entire address space.
Completely lockless approach would be quite complex with the main issue
being get_vma_name() using callbacks which mi
Utilize per-vma locks to stabilize vma after lookup without taking
mmap_lock during PROCMAP_QUERY ioctl execution. While we might take
mmap_lock for reading during contention, we do that momentarily only
to lock the vma.
This change is designed to reduce mmap_lock contention and prevent
PROCMAP_QUE
On Fri, May 23, 2025 at 07:46:19AM -0400, Joe Lawrence wrote:
> > - } else if (reloc->sym->sec->idx) {
> > - dest_sec = reloc->sym->sec;
> > - dest_off = reloc->sym->sym.st_value +
> > - arch_dest_reloc_offset(reloc_addend(r
On Mon, May 26, 2025 at 12:23:15PM +0200, Peter Zijlstra wrote:
> On Fri, May 09, 2025 at 01:16:42PM -0700, Josh Poimboeuf wrote:
> > On x86, arch_dest_reloc_offset() hardcodes the addend adjustment to
> > four, but the actual adjustment depends on the relocation type. Fix
> > that.
>
> > +s64 ar
On Mon, May 26, 2025 at 12:38:22PM +0200, Peter Zijlstra wrote:
> On Fri, May 09, 2025 at 01:16:52PM -0700, Josh Poimboeuf wrote:
> > When ignore_unreachable_insn() looks for weak function holes which jump
> > to their .cold functions, it assumes the parent function comes before
> > the correspondi
On Mon, May 26, 2025 at 12:43:55PM +0200, Peter Zijlstra wrote:
> > +++ b/tools/objtool/elf.c
> > @@ -442,6 +442,11 @@ static void elf_add_symbol(struct elf *elf, struct
> > symbol *sym)
> > elf_hash_add(symbol, &sym->hash, sym->idx);
> > elf_hash_add(symbol_name, &sym->name_hash, str_hash
On Wed, May 28, 2025 at 12:34:53PM +0200, Peter Zijlstra wrote:
> On Mon, May 26, 2025 at 12:52:40PM +0200, Peter Zijlstra wrote:
> > On Fri, May 09, 2025 at 01:16:56PM -0700, Josh Poimboeuf wrote:
> > > It's common to use --dryrun on binaries that have already been
> > > processed. Don't print th
On Mon, May 26, 2025 at 01:06:34PM +0200, Peter Zijlstra wrote:
> On Fri, May 09, 2025 at 01:17:06PM -0700, Josh Poimboeuf wrote:
> > An upcoming patch will add the SHF_MERGE flag to x86 __jump_table and
> > __bug_table so their entry sizes can be defined in inline asm.
> >
> > However, those sect
On Mon, May 26, 2025 at 08:22:59PM +0200, Peter Zijlstra wrote:
> On Fri, May 09, 2025 at 01:17:16PM -0700, Josh Poimboeuf wrote:
>
> > Without '-ffunction-sections -fdata-sections', reliable object diffing
> > would be infeasible due to toolchain limitations:
> >
> > - For intra-file+intra-sec
On Wed, Jun 4, 2025 at 10:17 PM Bui Quang Minh wrote:
>
> On 6/4/25 07:37, Jason Wang wrote:
> > On Tue, Jun 3, 2025 at 11:07 PM Bui Quang Minh
> > wrote:
> >> In virtio-net, we have not yet supported multi-buffer XDP packet in
> >> zerocopy mode when there is a binding XDP program. However, in
On Mon, May 26, 2025 at 12:52:40PM +0200, Peter Zijlstra wrote:
> On Fri, May 09, 2025 at 01:16:56PM -0700, Josh Poimboeuf wrote:
> > It's common to use --dryrun on binaries that have already been
> > processed. Don't print the section skipping warnings in that case.
>
> Ah, I rather like this wa
On 04/06/2025 22:35, Dave Jiang wrote:
>>>
>>> +static DECLARE_WAIT_QUEUE_HEAD(cxl_wait_queue);
>> Given that this file (suspend.c) focuses on power management functions,
>> it might be more appropriate to move the wait queue declaration and its
>> related changes to acpi.c in where the its c
On Thu, Jun 5, 2025 at 2:48 AM Dragos Tatulea wrote:
>
> needs_teardown is a device flag that indicates when virtual queues need
> to be recreated. This happens for certain configuration changes: queue
> size and some specific features.
>
> Currently, the needs_teardown state can be incorrectly re
On Wed, Jun 04, 2025 at 05:22:15PM -0700, Josh Poimboeuf wrote:
> On Mon, May 26, 2025 at 01:06:34PM +0200, Peter Zijlstra wrote:
> > On Fri, May 09, 2025 at 01:17:06PM -0700, Josh Poimboeuf wrote:
> > > An upcoming patch will add the SHF_MERGE flag to x86 __jump_table and
> > > __bug_table so thei
On Wed, Jun 04, 2025 at 03:19:58PM +0100, Lorenzo Stoakes wrote:
> The walk_page_range_novma() function is rather confusing - it supports two
> modes, one used often, the other used only for debugging.
>
> The first mode is the common case of traversal of kernel page tables, which
> is what nearly
On 6/4/25 10:19 PM, Lorenzo Stoakes wrote:
The walk_page_range_novma() function is rather confusing - it supports two
modes, one used often, the other used only for debugging.
The first mode is the common case of traversal of kernel page tables, which
is what nearly all callers use this for.
The per-CPU data section is handled differently than the other sections.
The memory allocations requires a special __percpu pointer and then the
section is copied into the view of each CPU. Therefore the SHF_ALLOC
flag is removed to ensure move_module() skips it.
Later, relocations are applied and
On Wed, 04 Jun 2025 21:58:48 +0100,
Sebastian Ott wrote:
>
> Hi Zenghui,
>
> On Tue, 3 Jun 2025, Zenghui Yu wrote:
> > On 2025/5/27 22:24, Sebastian Ott wrote:
> >> Some small fixes for arch_timer_edge_cases that I stumbled upon
> >> while debugging failures for this selftest on ampere-one.
> >>
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