Le 10/05/2025 à 23:01, Kent Overstreet a écrit :
Static keys can now be a module parameter, e.g.
module_param_named(foo, foo.key, static_key_t, 0644)
bcachefs is now using this.
Cc: Luis Chamberlain
Cc: Petr Pavlu
Cc: Sami Tolvanen
Cc: Daniel Gomez
Cc: linux-modu...@vger.kernel.org
Sign
Le 12/03/2025 à 17:30, Kees Cook a écrit :
On Wed, Mar 12, 2025 at 04:45:24PM +0100, Vlastimil Babka wrote:
On 3/6/25 17:57, Luis Chamberlain wrote:
+ linux-mm since we're adding TAINT_BAD_PAGE
On Thu, Mar 06, 2025 at 11:36:55AM +0100, Petr Pavlu wrote:
In the unlikely case that setting ro
Le 06/03/2025 à 14:13, Petr Pavlu a écrit :
Section .static_call_sites holds data structures that need to be sorted and
processed only at module load time. This initial processing happens in
static_call_add_module(), which is invoked as a callback to the
MODULE_STATE_COMING notification from p
Le 04/02/2025 à 06:22, Shyam Saini a écrit :
[Vous ne recevez pas souvent de courriers de shyamsa...@linux.microsoft.com.
Découvrez pourquoi ceci est important à
https://aka.ms/LearnAboutSenderIdentification ]
Move the following to module.h to allow common usages:
- lookup_or_create_modul
Le 03/02/2025 à 14:50, Thomas Weißschuh a écrit :
On Mon, Feb 03, 2025 at 12:23:29PM +0100, Christophe Leroy wrote:
Le 03/02/2025 à 10:05, Thomas Weißschuh a écrit :
For testing the functionality of the vDSO, it is necessary to build
userspace programs for multiple different architectures
Le 03/02/2025 à 10:05, Thomas Weißschuh a écrit :
For testing the functionality of the vDSO, it is necessary to build
userspace programs for multiple different architectures.
It is additional work to acquire matching userspace cross-compilers with
full C libraries and then building root images
Le 29/01/2025 à 19:17, Purva Yeshi a écrit :
On 27/01/25 13:32, Christophe Leroy wrote:
Le 26/01/2025 à 11:59, Purva Yeshi a écrit :
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Le 28/01/2025 à 10:16, Dmitry V. Levin a écrit :
Similar to syscall_set_arguments() that complements
syscall_get_arguments(), introduce syscall_set_nr()
that complements syscall_get_nr().
syscall_set_nr() is going to be needed along with
syscall_set_arguments() on all HAVE_ARCH_TRACEHOOK
arch
Le 26/01/2025 à 11:59, Purva Yeshi a écrit :
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Fix the build failure caused by the undefined `CLONE_NEWTIME`.
Include the `linux/sched.h
Le 03/01/2025 à 16:40, Petr Pavlu a écrit :
On 12/10/24 11:49, Daniel Gomez wrote:>>> Do you envision that the userspace would handle this problem
differently
and it is worth adding the complexity?
What complexity do you mean?
The complexity that I was referring to here is mainly the ear
Le 03/01/2025 à 17:13, Petr Pavlu a écrit :
On 12/5/24 20:46, Christophe Leroy wrote:
This series reworks module loading to avoid leaving the module in a
stale state when protecting ro_after_init section fails.
Once module init has succeded it is too late to cancel loading.
If setting
Hi Petr,
Le 23/12/2024 à 10:37, Petr Pavlu a écrit :
Section .static_call_sites holds data structures that need to be sorted and
processed only at module load time. The section is never modified afterwards.
Make it therefore read-only after module initialization to avoid any
(non-)accidental mod
Hi Sebastian,
Le 20/12/2024 à 18:41, Sebastian Andrzej Siewior a écrit :
Hi,
This is an updated version of the inital post after PeterZ made me aware
that there are users outside of the module directory.
The goal is replace the mix auf rcu_read_lock(), rcu_read_lock_sched()
and preempt_disable(
Le 18/12/2024 à 09:38, Petr Mladek a écrit :
On Tue 2024-12-17 23:09:59, Easwar Hariharan wrote:
Commit b35108a51cf7 ("jiffies: Define secs_to_jiffies()") introduced
secs_to_jiffies(). As the value here is a multiple of 1000, use
secs_to_jiffies() instead of msecs_to_jiffies to avoid the mult
ut
with an immediate schedule_work() call.
Signed-off-by: Easwar Hariharan
Reviewed-by: Christophe Leroy
---
samples/livepatch/livepatch-callbacks-busymod.c | 3 +--
samples/livepatch/livepatch-shadow-fix1.c | 3 +--
samples/livepatch/livepatch-shadow-mod.c| 15 +
feedback from RFC series
Christophe Leroy (3):
module: Split module_enable_rodata_ro()
module: Don't fail module loading when setting ro_after_init section
RO failed
module: pre-test setting ro_after_init data read-only
kernel/module/internal.h | 3 ++-
kernel/module/main.c
case it happens anyway. For systems that sets
panic-on-warn, such systems usely care about security and don't want
vulnerable systems, so an implied panic is worth it in that case.
Signed-off-by: Christophe Leroy
---
v1: Expanded the commit message based on feedback from RFC series
---
: d1909c022173 ("module: Don't ignore errors from set_memory_XX()")
Signed-off-by: Christophe Leroy
---
v1: Fixed comment from Petr about __func__
---
kernel/module/main.c | 7 ---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/kernel/module/main.c b/kernel/modu
.
Split module_enable_rodata_ro() in two.
Signed-off-by: Christophe Leroy
Tested-by: Daniel Gomez
---
kernel/module/internal.h | 3 ++-
kernel/module/main.c | 4 ++--
kernel/module/strict_rwx.c | 13 +
3 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/kernel
Le 26/11/2024 à 20:58, Luis Chamberlain a écrit :
On Sat, Nov 09, 2024 at 11:35:35AM +0100, Christophe Leroy wrote:
module_enable_rodata_ro() is called twice, once before module init
to set rodata sections readonly and once after module init to set
rodata_after_init section readonly.
The
Le 12/11/2024 à 21:28, Luis Chamberlain a écrit :
On Sat, Nov 09, 2024 at 11:35:37AM +0100, Christophe Leroy wrote:
diff --git a/kernel/module/main.c b/kernel/module/main.c
index 1bf4b0db291b..b603c9647e73 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -2582,7 +2582,7
Le 12/11/2024 à 10:43, Daniel Gomez a écrit :
On Mon Nov 11, 2024 at 7:53 PM CET, Christophe Leroy wrote:
Le 09/11/2024 à 23:17, Daniel Gomez a écrit :
On Sat Nov 9, 2024 at 11:35 AM CET, Christophe Leroy wrote:
Once module init has succeded it is too late to cancel loading.
If setting
Le 09/11/2024 à 23:17, Daniel Gomez a écrit :
On Sat Nov 9, 2024 at 11:35 AM CET, Christophe Leroy wrote:
Once module init has succeded it is too late to cancel loading.
If setting ro_after_init data section to read-only fails, all we
can do is to inform the user through a warning.
Reported
Le 09/11/2024 à 22:03, Daniel Gomez a écrit :
On Sat Nov 9, 2024 at 11:35 AM CET, Christophe Leroy wrote:
To be on the safe side, try to set ro_after_init data section readonly
at the same time as rodata. If it fails it will likely fail again
later so let's cancel module loading whi
so that it still works after module init. Then it
should in principle never fail so add a WARN_ON_ONCE() to get a big
fat warning in case it happens anyway.
Signed-off-by: Christophe Leroy
---
kernel/module/main.c | 2 +-
kernel/module/strict_rwx.c | 5 -
2 files changed, 5 insert
: d1909c022173 ("module: Don't ignore errors from set_memory_XX()")
Signed-off-by: Christophe Leroy
---
kernel/module/main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/module/main.c b/kernel/module/main.c
index 2de4ad7af335..1bf4b0db291b 1006
.
Split module_enable_rodata_ro() in two.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 3 ++-
kernel/module/main.c | 4 ++--
kernel/module/strict_rwx.c | 13 +
3 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/kernel/module/internal.h b/kernel
Le 08/11/2024 à 17:12, Daniel Gomez via B4 Relay a écrit :
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devnull+da.gomez.samsung@kernel.org. Découvrez pourquoi ceci est important
à https://aka.ms/LearnAboutSenderIdentification ]
From: Daniel Gomez
When ro_after_init fails, we need to
Hi Jason,
Le 01/09/2024 à 15:22, Jason A. Donenfeld a écrit :
Hi Christophe,
Hmm, I'm not so sure I like this very much. I think it's important for
these tests to fail when an arch tries to hook up the function to the
vDSO, but it's still not exported for some reason. This also regresses
the AR
Le 17/10/2024 à 01:21, Luis Chamberlain a écrit :
On Tue, Oct 15, 2024 at 04:22:22PM -0700, Matthew Maurer wrote:
So, the basic things I can think of to test here are:
1. The kernel can still load the previous MODVERSIONS format
2. The kernel can load the new MODVERSIONS format
3. If we arti
Le 26/09/2024 à 01:38, Matthew Maurer a écrit :
Adds a new format for MODVERSIONS which stores each field in a separate
ELF section. This initially adds support for variable length names, but
could later be used to add additional fields to MODVERSIONS in a
backwards compatible way if needed. A
In order to use vdso_test_getrandom with analysis tools like 'perf' it
can be useful to perform only one kind of test, for instead only vdso.
Add an optional argument that allows telling which of the three API
you want to benchmark.
Signed-off-by: Christophe Leroy
---
.../self
Le 19/04/2024 à 17:49, Mike Rapoport a écrit :
> Hi Masami,
>
> On Thu, Apr 18, 2024 at 06:16:15AM +0900, Masami Hiramatsu wrote:
>> Hi Mike,
>>
>> On Thu, 11 Apr 2024 19:00:50 +0300
>> Mike Rapoport wrote:
>>
>>> From: "Mike Rapoport (IBM)"
>>>
>>> kprobes depended on CONFIG_MODULES because i
Le 11/04/2024 à 18:05, Mike Rapoport a écrit :
> From: "Mike Rapoport (IBM)"
>
> vmalloc allocations with VM_ALLOW_HUGE_VMAP that do not explictly
> specify node ID will use huge pages only if size_per_node is larger than
> PMD_SIZE.
> Still the actual allocated memory is not distributed betwee
Le 26/03/2024 à 14:46, Jarkko Sakkinen a écrit :
> Tacing with kprobes while running a monolithic kernel is currently
> impossible due the kernel module allocator dependency.
>
> Address the issue by implementing textmem API for RISC-V.
>
> Link: https://www.sochub.fi # for power on testing new
Le 26/03/2024 à 14:46, Jarkko Sakkinen a écrit :
> Tracing with kprobes while running a monolithic kernel is currently
> impossible because CONFIG_KPROBES depends on CONFIG_MODULES.
>
> Introduce alloc_execmem() and free_execmem() for allocating executable
> memory. If an arch implements these f
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> If something like this is merged down the road, it can go in at leisure
> once th
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> No BPF code has to change, except in struct_ops (for module refs).
>
> This conf
Hi Calvin,
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Both BPF_JIT and KPROBES depend on CONFIG_MODULES, but only require
> m
Le 31/01/2024 à 16:17, Marek Szyprowski a écrit :
> [Vous ne recevez pas souvent de courriers de m.szyprow...@samsung.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Hi Christophe,
>
> On 31.01.2024 12:58, Christophe
Hi,
Le 30/01/2024 à 18:48, Marek Szyprowski a écrit :
> [Vous ne recevez pas souvent de courriers de m.szyprow...@samsung.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Dear All,
>
> On 30.01.2024 12:03, Christophe Ler
Le 30/01/2024 à 21:27, Luis Chamberlain a écrit :
> On Tue, Jan 30, 2024 at 06:48:11PM +0100, Marek Szyprowski wrote:
>> Dear All,
>>
>> On 30.01.2024 12:03, Christophe Leroy wrote:
>>> Le 30/01/2024 à 10:16, Chen-Yu Tsai a écrit :
>>>> [Vous
n wrote:
>> On Thu, Dec 21, 2023 at 10:02:46AM +0100, Christophe Leroy wrote:
>>> Declaring rodata_enabled and mark_rodata_ro() at all time
>>> helps removing related #ifdefery in C files.
>>>
>>> Signed-off-by: Christophe Leroy
>>
>> Very nice
Le 18/04/2022 à 06:38, Shivaprasad G Bhat a écrit :
> papr_scm and ndtest share common PDSM payload structs like
> nd_papr_pdsm_health. Presently these structs are duplicated across
> papr_pdsm.h and ndtest.h header files. Since 'ndtest' is essentially
> arch independent and can run on platforms
Kees
>>
>> Christophe Leroy writes:
>>> Declaring rodata_enabled and mark_rodata_ro() at all time
>>> helps removing related #ifdefery in C files.
>>>
>>> Signed-off-by: Christophe Leroy
>>> ---
>>> include/linux/init.h |
Now that rodata_enabled is always declared, remove #ifdef
and define a single version of strict_kernel_rwx_enabled().
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/mmu.h | 9 +
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu.h b
Now that rodata_enabled is declared at all time, the #ifdef
CONFIG_STRICT_MODULE_RWX can be removed.
Signed-off-by: Christophe Leroy
---
kernel/module/strict_rwx.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/kernel/module/strict_rwx.c b/kernel/module/strict_rwx.c
Declaring rodata_enabled and mark_rodata_ro() at all time
helps removing related #ifdefery in C files.
Signed-off-by: Christophe Leroy
---
include/linux/init.h | 4
init/main.c | 21 +++--
2 files changed, 7 insertions(+), 18 deletions(-)
diff --git a/include
.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 6 ++---
kernel/module/main.c | 18 ++
kernel/module/strict_rwx.c | 48 ++
3 files changed, 50 insertions(+), 22 deletions(-)
diff --git a/kernel/module/internal.h b/kernel
It's a bit puzzling to see a call to module_enable_nx() followed by a
call to module_enable_x(). This is because one applies on text while
the other applies on data.
Change name to make that more clear.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 6 +++---
kernel/m
ry_rox()")
Use set_memory_rox() in modules when STRICT_MODULES_RWX is set.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 2 +-
kernel/module/main.c | 2 +-
kernel/module/strict_rwx.c | 12 +++-
3 files changed, 9 insertions(+), 7 deletions(-)
diff -
Le 06/12/2023 à 08:36, Jiri Slaby (SUSE) a écrit :
> Switch character types to u8 and sizes to size_t. To conform to
> characters/sizes in the rest of the tty layer.
>
> Signed-off-by: Jiri Slaby (SUSE)
> Cc: Michael Ellerman
> Cc: Nicholas Piggin
> Cc: Christophe L
Hi Mike,
Le 18/09/2023 à 09:29, Mike Rapoport a écrit :
> From: "Mike Rapoport (IBM)"
>
> powerpc overrides kprobes::alloc_insn_page() to remove writable
> permissions when STRICT_MODULE_RWX is on.
>
> Add definition of EXECMEM_KRPOBES to execmem_params to allow using the
> generic kprobes::all
Le 22/09/2023 à 10:55, Song Liu a écrit :
> On Fri, Sep 22, 2023 at 12:17 AM Christophe Leroy
> wrote:
>>
>>
>>
>> Le 22/09/2023 à 00:52, Song Liu a écrit :
>>> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>>>
>>> [..
Le 22/09/2023 à 00:52, Song Liu a écrit :
> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>
> [...]
>> diff --git a/include/linux/execmem.h b/include/linux/execmem.h
>> index 519bdfdca595..09d45ac786e9 100644
>> --- a/include/linux/execmem.h
>> +++ b/include/linux/execmem.h
>> @@ -29,6
Le 09/04/2021 à 03:23, Daniel Walker a écrit :
On Thu, Apr 08, 2021 at 02:04:08PM -0500, Rob Herring wrote:
On Tue, Apr 06, 2021 at 10:38:36AM -0700, Daniel Walker wrote:
On Fri, Apr 02, 2021 at 03:18:21PM +, Christophe Leroy wrote:
-config CMDLINE_BOOL
- bool "Built-in k
In order to simplify use on PPC32, change ppc_inst_as_u64()
into ppc_inst_as_ulong() that returns the 32 bits instruction
on PPC32.
Will be used when porting OPTPROBES to PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 13 +++--
arch/powerpc/kernel
and use stmw/lmw to
save/restore registers.
Signed-off-by: Christophe Leroy
---
v2: Comments from Naveen.
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/kernel/optprobes.c | 24 --
arch/powerpc/kernel/optprobes_head.S | 65 +++-
3 files changed
Le 20/04/2021 à 15:32, Christophe Leroy a écrit :
From: Christophe Leroy
Oops, I forgot to reset the Author. Michael if you apply this patch please update the author and
remove the old Signed-off-by
Thanks
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc
Le 20/04/2021 à 08:51, Naveen N. Rao a écrit :
Christophe Leroy wrote:
For that, create a 32 bits version of patch_imm64_load_insns()
and create a patch_imm_load_insns() which calls
patch_imm32_load_insns() on PPC32 and patch_imm64_load_insns()
on PPC64.
Adapt optprobes_head.S for PPC32
From: Christophe Leroy
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
find_legacy_serial_ports() is called early from setup_arch(), before
paging_init(). vmalloc is not available yet, ioremap shouldn't be
used that early.
a fixed size
AREA at the top of the I/O space for fixmap and ensure during
build that the size is big enough.
Fixes: 265c3491c4bc ("powerpc: Add support for GENERIC_EARLY_IOREMAP")
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 4 +++-
arch/powerpc/i
Hi Chris,
Le 10/08/2020 à 04:01, Chris Packham a écrit :
On 24/03/20 10:54 am, Chris Packham wrote:
Hi Christophe,
On Wed, 2020-02-05 at 12:03 +, Christophe Leroy wrote:
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
I was
unction-declaration]
660 | get_vr(rn, &u.v);
| ^~
In theory ALTIVEC is independent of PPC_FPU but in practice nobody
is going to build such a machine, so make ALTIVEC require PPC_FPU
by depending on PPC_FPU.
Signed-off-by: Randy Dunlap
Reported-by: kernel test robot
Cc: Michael
Le 19/04/2021 à 16:00, Steven Price a écrit :
On 19/04/2021 14:14, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
To be
This patch makes use of trap types in irq.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 1 +
arch/powerpc/kernel/irq.c| 13 +
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/interrupt.h
b/arch
This patch makes use of trap types in head_8xx.S
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 29
arch/powerpc/kernel/head_8xx.S | 49 ++--
2 files changed, 47 insertions(+), 31 deletions(-)
diff --git a/arch/powerpc
This patch makes use of trap types in head_book3s_32.S
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 6
arch/powerpc/kernel/head_book3s_32.S | 43 ++--
2 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/arch/powerpc
Le 19/04/2021 à 15:32, Segher Boessenkool a écrit :
Hi!
On Sun, Apr 18, 2021 at 01:17:26PM -0700, Randy Dunlap wrote:
Add ldstfp.o to the Makefile for CONFIG_ALTIVEC and add
externs for get_vr() and put_vr() in lib/sstep.c to fix the
build errors.
obj-$(CONFIG_PPC_FPU) += ldstfp.o
+obj-
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
To be honest I don't fully understand why powerpc requires the page_size - it appears to be usin
This patch converts powerpc to the generic PTDUMP implementation.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Kconfig | 2 +
arch/powerpc/Kconfig.debug| 30 --
arch/powerpc/mm/Makefile | 2 +-
arch/powerpc/mm/mmu_decl.h| 2 +-
arch/powerpc
ent
dirty accessed
...
0xf95ac000-0xf95a 0x042b16K rw present
dirty accessed
0xfef5c000-0xfeff 0x0143400016K rpresent
accessed
---[ kasan shadow mem end ]---
Signed-off-by: Christoph
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
v2:
- Add a guard for NULL ops->pte_entry
- Take mm->page_table_lock when w
gic that checked for contiguous physical memory
- Removed the articial level calculation in ptdump_pte_entry(), level 4 is ok
for all.
- Removed page_size argument to note_page()
Christophe Leroy (4):
mm: pagewalk: Fix walk for hugepage tables
powerpc/mm: Leave a gap between early allocated IO ar
Vmalloc system leaves a gap between allocated areas. It helps catching
overflows.
Do the same for IO areas which are allocated with early_ioremap_range()
until slab_is_available().
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/ioremap_32.c | 4 ++--
arch/powerpc/mm/ioremap_64.c | 2 +-
2
Le 18/04/2021 à 19:15, Randy Dunlap a écrit :
On 4/18/21 3:43 AM, Christophe Leroy wrote:
Le 18/04/2021 à 02:02, Randy Dunlap a écrit :
HI--
I no longer see this build error.
Fixed by
https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b630691574e16
However:
On 2/27
Le 17/04/2021 à 22:17, Randy Dunlap a écrit :
Hi,
kernel test robot reports:
drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of function
'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration]
enable_kernel_fp();
^
when
# CONFIG_PPC_FPU is
Le 18/04/2021 à 02:02, Randy Dunlap a écrit :
HI--
I no longer see this build error.
Fixed by
https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b630691574e16
However:
On 2/27/21 2:24 AM, kernel test robot wrote:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/
Le 16/04/2021 à 01:49, Alexei Starovoitov a écrit :
On Thu, Apr 15, 2021 at 8:41 AM Quentin Monnet wrote:
2021-04-15 16:37 UTC+0200 ~ Daniel Borkmann
On 4/15/21 11:32 AM, Jianlin Lv wrote:
For debugging JITs, dumping the JITed image to kernel log is discouraged,
"bpftool prog dump jited"
Le 16/04/2021 à 17:04, Christophe Leroy a écrit :
Le 16/04/2021 à 16:40, Christophe Leroy a écrit :
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote
Le 16/04/2021 à 16:40, Christophe Leroy a écrit :
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
To be
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order to
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add a
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add a page_size argument to notepage().
Signed-off-by: Christophe Leroy
---
arch/arm64/mm/ptdump.c
Le 16/04/2021 à 08:57, Daniel Axtens a écrit :
Hi Jiapeng,
Fix the following clang warning:
You are not fixing a warning, you are removing a function in order to fix a
warning ...
drivers/soc/fsl/qe/qe_ic.c:234:29: warning: unused function
'qe_ic_from_irq' [-Wunused-function].
Would
immediately and delete it!
Le 16/04/2021 à 08:08, Christophe Leroy a écrit :
Hi,
This mail is unreadable.
Please send your patch as raw text mail, not as attached file.
Thanks
Christophe
Le 16/04/2021 à 05:12, 韩大鹏(Han Dapeng) a écrit
Hi,
This mail is unreadable.
Please send your patch as raw text mail, not as attached file.
Thanks
Christophe
Le 16/04/2021 à 05:12, 韩大鹏(Han Dapeng) a écrit :
*OPPO*
*
*
本电子邮件及其附件含有OPPO公司的保密信息
Le 16/04/2021 à 00:43, Daniel Axtens a écrit :
Hi Christophe,
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
mm
Hi Daniel,
Le 16/04/2021 à 01:29, Daniel Axtens a écrit :
Hi Christophe,
Which hugepd, page table entries can be at any level
and can be of any size.
Add support for them.
Signed-off-by: Christophe Leroy
---
mm/ptdump.c | 17 +++--
1 file changed, 15 insertions(+), 2
Le 16/04/2021 à 01:12, Daniel Axtens a écrit :
Hi Christophe,
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int
level,
- u64 val)
+ u64 val, unsigned long page_size)
Compilers can warn about unused parameters at -Wextra lev
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add a page_size argument to notepage().
Signed-off-by: Christophe Leroy
---
arch/arm64/mm/ptdump.c | 2 +-
arch/riscv/mm/ptdump.c | 2 +-
arch/s390/mm/dump_pagetables.c | 3
make[2]: *** [mm/ptdump.o] Error 1
READ_ONCE() cannot be used for reading PTEs. Use ptep_get()
instead. See commit 481e980a7c19 ("mm: Allow arches to provide ptep_get()")
and commit c0e1c8c22beb ("powerpc/8xx: Provide ptep_get() with 16k pages")
for details.
Fixes: 30d621f6
Which hugepd, page table entries can be at any level
and can be of any size.
Add support for them.
Signed-off-by: Christophe Leroy
---
mm/ptdump.c | 17 +++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/mm/ptdump.c b/mm/ptdump.c
index 61cd16afb1c8..6efdb8c15a7d
This patch converts powerpc to the generic PTDUMP implementation.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Kconfig | 2 +
arch/powerpc/Kconfig.debug| 30 --
arch/powerpc/mm/Makefile | 2 +-
arch/powerpc/mm/mmu_decl.h| 2 +-
arch/powerpc
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
mm/pagewalk.c | 54 +--
1 file
This series converts powerpc to generic PTDUMP.
For that, we first need to add missing hugepd support
to pagewalk and ptdump.
Christophe Leroy (5):
mm: pagewalk: Fix walk for hugepage tables
mm: ptdump: Fix build failure
mm: ptdump: Provide page size to notepage()
mm: ptdump: Support
Hi Nick,
Le 17/03/2021 à 07:24, Nicholas Piggin a écrit :
This reduces TLB misses by nearly 30x on a `git diff` workload on a
2-node POWER9 (59,800 -> 2,100) and reduces CPU cycles by 0.54%, due
to vfs hashes being allocated with 2MB pages.
Cc: linuxppc-...@lists.ozlabs.org
Acked-by: Michael El
Le 15/04/2021 à 12:08, Christophe Leroy a écrit :
Le 15/04/2021 à 12:07, Christophe Leroy a écrit :
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a con
Le 15/04/2021 à 12:07, Christophe Leroy a écrit :
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a conflict in:
arch/powerpc/kernel/module.c
between c
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a conflict in:
arch/powerpc/kernel/module.c
between commit:
2ec13df16704 ("powerpc/modules: Load modules clos
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