On 07/11/23 at 11:53am, Ming Lei wrote:
> Hi Baoquan,
>
> On Tue, Jul 11, 2023 at 11:35:50AM +0800, Baoquan He wrote:
> > On 07/10/23 at 05:14pm, Ming Lei wrote:
> > > On Mon, Jul 10, 2023 at 08:41:09AM +0200, Christoph Hellwig wrote:
> > > > On Sat, Jul 08, 2023 at 10:02:59AM +0800, Ming Lei wrot
On 7/11/23 11:51 AM, Huang, Ying wrote:
> "Aneesh Kumar K.V" writes:
>
>> Add a new kconfig option that can be selected if we want to allow
>> pageblock alignment by reserving pages in the vmemmap altmap area.
>> This implies we will be reserving some pages for every memoryblock
>> This also allo
Dear Su,
Thank you for your patch.
Am 10.07.23 um 08:38 schrieb Su Hui:
From: wuych
Can you please write the full name correctly? Maybe Yun Chuan?
git config --global user.name "Yun Chuan"
git commit --amend --author="Yun Chuan "
I only got the cover letter by the way.
Kind rega
[Cc: Remove mostr...@earthlink.net (550 5.5.1 Recipient rejected -
ELNK001_403 -)]
Am 11.07.23 um 10:53 schrieb Paul Menzel:
Dear Su,
Thank you for your patch.
Am 10.07.23 um 08:38 schrieb Su Hui:
From: wuych
Can you please write the full name correctly? Maybe Yun Chuan?
git config
On 2023/7/11 16:53, Paul Menzel wrote:
Dear Su,
Thank you for your patch.
Am 10.07.23 um 08:38 schrieb Su Hui:
From: wuych
Can you please write the full name correctly? Maybe Yun Chuan?
git config --global user.name "Yun Chuan"
git commit --amend --author="Yun Chuan "
Dear Paul
On Thu, Jul 06, 2023 at 05:50:57PM +1000, Jordan Niethe wrote:
>
>
> On 30/6/23 3:56 pm, Gautam Menghani wrote:
> > Remove an unnecessary piece of code that does an endianness conversion but
> > does not use the result. The following warning was reported by Clang's
> > static analyzer:
> >
> > a
On Tue, Jul 11, 2023 at 8:10 AM Thomas Zimmermann wrote:
>
> I'd like to take the patchset into drm-misc. It's part of a larger
> cleanup of the fbdev modules and its interfaces.
Sounds good, thanks!
Cheers,
Miguel
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
From: Vishal Verma
With DAX memory regions originating from CXL memory expanders or
NVDIMMs, the kmem driver may be hot-adding huge amounts of system memory
on a system without enough 'regular' main memory to support the memmap
for it. To avoid this, e
-bool mhp_supports_memmap_on_memory(unsigned long size)
+static bool mhp_supports_memmap_on_memory(unsigned long size)
{
unsigned long nr_vmemmap_pages = size / PAGE_SIZE;
unsigned long vmemmap_size = nr_vmemmap_pages * sizeof(struct page);
@@ -1339,13 +1339,12 @@ int __ref add_m
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Some architectures would want different restrictions. Hence add an
architecture-specific override.
Both the PMD_SIZE check and pageblock alignment check are moved there.
Signed-off-by: Aneesh Kumar K.V
---
mm/memory_hotplug.c | 17 -
On 7/11/23 12:35, Leon Romanovsky wrote:
>
> On Mon, Feb 27, 2023 at 09:35:59AM -0800, Suren Baghdasaryan wrote:
>
> <...>
>
>> Laurent Dufour (1):
>> powerc/mm: try VMA lock-based page fault handling first
>
> Hi,
>
> This series and specifically the commit above broke docker over PPC.
> It
On Tue, Jul 11, 2023 at 12:39:34PM +0200, Vlastimil Babka wrote:
> On 7/11/23 12:35, Leon Romanovsky wrote:
> >
> > On Mon, Feb 27, 2023 at 09:35:59AM -0800, Suren Baghdasaryan wrote:
> >
> > <...>
> >
> >> Laurent Dufour (1):
> >> powerc/mm: try VMA lock-based page fault handling first
> >
>
On Tue, Jul 11, 2023 at 02:01:41PM +0300, Leon Romanovsky wrote:
> On Tue, Jul 11, 2023 at 12:39:34PM +0200, Vlastimil Babka wrote:
> > On 7/11/23 12:35, Leon Romanovsky wrote:
> > >
> > > On Mon, Feb 27, 2023 at 09:35:59AM -0800, Suren Baghdasaryan wrote:
> > >
> > > <...>
> > >
> > >> Laurent
On Mon, Feb 27, 2023 at 09:35:59AM -0800, Suren Baghdasaryan wrote:
<...>
> Laurent Dufour (1):
> powerc/mm: try VMA lock-based page fault handling first
Hi,
This series and specifically the commit above broke docker over PPC.
It causes to docker service stuck while trying to activate. Reve
This patch set adds fchmodat4(), a new syscall. The actual
implementation is super simple: essentially it's just the same as
fchmodat(), but LOOKUP_FOLLOW is conditionally set based on the flags.
I've attempted to make this match "man 2 fchmodat" as closely as
possible, which says EINVAL is returne
From: Palmer Dabbelt
This registers the new fchmodat4 syscall in most places as nuber 451,
with alpha being the exception where it's 561. I found all these sites
by grepping for fspick, which I assume has found me everything.
Signed-off-by: Palmer Dabbelt
Signed-off-by: Alexey Gladkov
---
ar
From: Palmer Dabbelt
On the userspace side fchmodat(3) is implemented as a wrapper
function which implements the POSIX-specified interface. This
interface differs from the underlying kernel system call, which does not
have a flags argument. Most implementations require procfs [1][2].
There doesn
From: Palmer Dabbelt
The next patch defines a very similar interface, which I copied from
this definition. Since I'm touching it anyway I don't see any reason
not to just go fix this one up.
Signed-off-by: Palmer Dabbelt
---
include/linux/syscalls.h | 2 +-
1 file changed, 1 insertion(+), 1 d
From: Palmer Dabbelt
That add support for this new syscall in tools such as 'perf trace'.
Signed-off-by: Palmer Dabbelt
Signed-off-by: Alexey Gladkov
---
tools/include/uapi/asm-generic/unistd.h | 5 -
tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl | 1 +
tools/perf/arch/p
The test marks as skipped if a syscall with the AT_SYMLINK_NOFOLLOW flag
fails. This is because not all filesystems support changing the mode
bits of symlinks properly. These filesystems return an error but change
the mode bits:
newfstatat(4, "regfile", {st_mode=S_IFREG|0640, st_size=0, ...},
AT_
On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> From: Palmer Dabbelt
>
> This registers the new fchmodat4 syscall in most places as nuber 451,
> with alpha being the exception where it's 561. I found all these sites
> by grepping for fspick, which I assume has found me everything.
>
> Sig
On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> From: Palmer Dabbelt
>
> The next patch defines a very similar interface, which I copied from
> this definition. Since I'm touching it anyway I don't see any reason
> not to just go fix this one up.
>
> Signed-off-by: Palmer Dabbelt
Acked-
On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> From: Palmer Dabbelt
>
> On the userspace side fchmodat(3) is implemented as a wrapper
> function which implements the POSIX-specified interface. This
> interface differs from the underlying kernel system call, which does not
> have a flags a
On Tue, Jul 11, 2023 at 01:42:19PM +0200, Arnd Bergmann wrote:
> On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> > From: Palmer Dabbelt
> >
> > On the userspace side fchmodat(3) is implemented as a wrapper
> > function which implements the POSIX-specified interface. This
> > interface diff
* Alexey Gladkov:
> The test marks as skipped if a syscall with the AT_SYMLINK_NOFOLLOW flag
> fails. This is because not all filesystems support changing the mode
> bits of symlinks properly. These filesystems return an error but change
> the mode bits:
>
> newfstatat(4, "regfile", {st_mode=S_IFR
* Alexey Gladkov:
> This patch set adds fchmodat4(), a new syscall. The actual
> implementation is super simple: essentially it's just the same as
> fchmodat(), but LOOKUP_FOLLOW is conditionally set based on the flags.
> I've attempted to make this match "man 2 fchmodat" as closely as
> possible,
On Tue, Jul 11, 2023 at 01:25:43PM +0200, Alexey Gladkov wrote:
> -static int do_fchmodat(int dfd, const char __user *filename, umode_t mode)
> +static int do_fchmodat4(int dfd, const char __user *filename, umode_t mode,
> int lookup_flags)
This function can still be called do_fchmodat(); we don'
On 7/10/23 17:23, Jarkko Sakkinen wrote:
On Thu, 2023-06-15 at 22:37 +1000, Michael Ellerman wrote:
There's code in prom_instantiate_sml() to do a "SML handover" (Stored
Measurement Log) from OF to Linux, before Linux shuts down Open
Firmware.
This involves creating a buffer to hold the SML,
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve he
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve he
Hi Thomas,
On Tue, Jul 11, 2023 at 08:24:40AM +0200, Thomas Zimmermann wrote:
> Hi Sam
>
> Am 10.07.23 um 19:19 schrieb Sam Ravnborg:
> > Hi Thomas,
> >
> > On Mon, Jul 10, 2023 at 02:50:04PM +0200, Thomas Zimmermann wrote:
> > > Remove the unused flags FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT fro
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Radix vmemmap mapping can map things correctly at the PMD level or PTE
level based on different device boundary checks. Hence we skip the
restrictions w.r.t vmemmap size to be multiple of PMD_SIZE. This also
makes the feature widely useful because to use
On 7/11/23 16:47, Sam Ravnborg wrote:
Hi Thomas,
On Tue, Jul 11, 2023 at 08:24:40AM +0200, Thomas Zimmermann wrote:
Hi Sam
Am 10.07.23 um 19:19 schrieb Sam Ravnborg:
Hi Thomas,
On Mon, Jul 10, 2023 at 02:50:04PM +0200, Thomas Zimmermann wrote:
Remove the unused flags FBINFO_DEFAULT and FBIN
On 7/11/23 8:56 PM, David Hildenbrand wrote:
> On 11.07.23 06:48, Aneesh Kumar K.V wrote:
>> Radix vmemmap mapping can map things correctly at the PMD level or PTE
>> level based on different device boundary checks. Hence we skip the
>> restrictions w.r.t vmemmap size to be multiple of PMD_SIZE. Th
On 11.07.23 17:40, Aneesh Kumar K V wrote:
On 7/11/23 8:56 PM, David Hildenbrand wrote:
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Radix vmemmap mapping can map things correctly at the PMD level or PTE
level based on different device boundary checks. Hence we skip the
restrictions w.r.t vmemmap
On 7/11/23 9:14 PM, David Hildenbrand wrote:
> On 11.07.23 17:40, Aneesh Kumar K V wrote:
>> On 7/11/23 8:56 PM, David Hildenbrand wrote:
>>> On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Radix vmemmap mapping can map things correctly at the PMD level or PTE
level based on different device b
On 7/11/23 3:53 PM, David Hildenbrand wrote:
>> -bool mhp_supports_memmap_on_memory(unsigned long size)
>> +static bool mhp_supports_memmap_on_memory(unsigned long size)
>> {
>> unsigned long nr_vmemmap_pages = size / PAGE_SIZE;
>> unsigned long vmemmap_size = nr_vmemmap_pages * sizeo
This series is cleaning up a bit KUAP in preparation of using objtool
to validate UACCESS.
There are two main changes in this series:
1/ Simplification of KUAP on book3s/32
2/ Using ASM features on 32 bits and booke as suggested by Nic.
Those changes will be required for objtool UACCESS validat
kuep_is_disabled() was introduced by commit 91bb30822a2e ("powerpc/32s:
Refactor update of user segment registers") but then all users but one
were removed by commit 526d4a4c77ae ("powerpc/32s: Do kuep_lock() and
kuep_unlock() in assembly").
Fold kuep_is_disabled() into init_new_context() which is
Disassembly of interrupt_enter_prepare() shows a pointless nop
before the mftb
c000abf0 :
c000abf0: 81 23 00 84 lwz r9,132(r3)
c000abf4: 71 29 40 00 andi. r9,r9,16384
c000abf8: 41 82 00 28 beq-c000ac20
c000abfc: ===> 60 00 00 00 nop <
On powerpc32, features fixup is performed very early and that's too
early to read the cmdline and take into account 'nosmap' parameter.
On the other hand, no userspace access is performed that early and
KUAP feature fixup can be performed later.
Add a function to update mmu features. The function
A disassembly of interrupt_exit_kernel_prepare() shows a useless read
of MD_AP register. This is shown by r9 being re-used immediately without
doing anything with the value read.
c000e0e0: 60 00 00 00 nop
c000e0e4: ===> 7d 3a c2 a6 mfmd_ap r9<
c000e0e8: 7d 20 00
All but book3s/64 use a static branch key for disabling kuap.
book3s/64 uses an mmu feature.
Refactor all targets to use MMU_FTR_KUAP like book3s/64.
For PPC32 that implies updating mmu features fixups once KUAP
has been initialised.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm
On book3s/32 KUAP is performed at segment level. At the moment,
when enabling userspace access, only current segment is modified.
Then if a write is performed on another user segment, a fault is
taken and all other user segments get enabled for userspace
access. This then require special attention
In order to reuse MMU_FTR_BOOK3S_KUAP for other targets than BOOK3S,
rename it MMU_FTR_KUAP.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/hash-pkey.h | 2 +-
arch/powerpc/include/asm/book3s/64/kup.h | 18 +-
arch/powerpc/include/asm/mmu.h
To avoid a useless nop on top of every uaccess enable/disable and
make life easier for objtool, replace static branches by ASM feature
fixups that will nop KUAP enabling instructions out in the unlikely
case KUAP is disabled at boottime.
Leave it as is on book3s/64 for now, it will be handled late
Objtool reports following warnings:
arch/powerpc/kernel/signal_32.o: warning: objtool:
__prevent_user_access.constprop.0+0x4 (.text+0x4):
redundant UACCESS disable
arch/powerpc/kernel/signal_32.o: warning: objtool: user_access_begin+0x2c
(.text+0x4c): return with UACCESS enabled
Hi Helge,
On Tue, Jul 11, 2023 at 5:26 PM Helge Deller wrote:
> On 7/11/23 16:47, Sam Ravnborg wrote:
> > On Tue, Jul 11, 2023 at 08:24:40AM +0200, Thomas Zimmermann wrote:
> >> Am 10.07.23 um 19:19 schrieb Sam Ravnborg:
> >>> On Mon, Jul 10, 2023 at 02:50:04PM +0200, Thomas Zimmermann wrote:
> >
On 7/11/23 4:06 PM, David Hildenbrand wrote:
> On 11.07.23 06:48, Aneesh Kumar K.V wrote:
>> Some architectures would want different restrictions. Hence add an
>> architecture-specific override.
>>
>> Both the PMD_SIZE check and pageblock alignment check are moved there.
>>
>> Signed-off-by: Aneesh
This series adds UACCESS validation for PPC32. It includes
a dozen of changes to objtool core.
It applies on top of series "Cleanup/Optimise KUAP (v3)"
https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=363368&state=*
It is almost mature, performs code analysis for all PPC32.
In this
This reverts commit 1e688dd2a3d6759d416616ff07afc4bb836c4213.
That commit aimed at optimising the code around generation of
WARN_ON/BUG_ON but this leads to a lot of dead code erroneously
generated by GCC.
That dead code becomes a problem when we start using objtool validation
because objtool wil
Supporting objtool on ASM files requires quite an effort.
Features like UACCESS validation don't require ASM files validation.
In order to allow architectures to enable objtool validation
without spending unnecessary effort on cleaning up ASM files,
provide an option to disable objtool validation
At the time being, the end of a switch table can only be known
once the start of the following switch table has ben located.
This is a problem when switch tables are nested because until the first
switch table is properly added, the second one cannot be located as a
the backward walk will abut on
On 11.07.23 18:07, Aneesh Kumar K V wrote:
On 7/11/23 4:06 PM, David Hildenbrand wrote:
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Some architectures would want different restrictions. Hence add an
architecture-specific override.
Both the PMD_SIZE check and pageblock alignment check are moved
noreturns.h is a mix of x86 specific functions and more generic
core functions.
In preparation of inclusion of powerpc, split x86 functions out of
noreturns.h into arch/noreturns.h
Signed-off-by: Christophe Leroy
---
.../objtool/arch/x86/include/arch/noreturns.h | 20 +++
tools/
Most functions have an unconditional return at the end, like
this one:
:
0: 81 22 04 d0 lwz r9,1232(r2)
4: 38 60 00 00 li r3,0
8: 2c 09 00 00 cmpwi r9,0
c: 4d 82 00 20 beqlr <== Conditional re
When walking backward to find the base address of a switch table,
also take into account conditionnal branches and dynamic jumps from
a previous switch table.
To avoid mis-routing, break when stumbling on a function return.
Signed-off-by: Christophe Leroy
---
tools/objtool/check.c | 8 ++--
Exclude sections named
.rodata.cst2
.rodata.cst4
.rodata.cst8
.rodata.cst16
as they won't contain switch tables.
Signed-off-by: Christophe Leroy
---
tools/objtool/check.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
i
On x86, UACCESS is controlled by two instructions: STAC and CLAC.
STAC instruction enables UACCESS while CLAC disables UACCESS.
This is simple enough for objtool to locate UACCESS enable and
disable.
But on powerpc it is a bit more complex, the same instruction is
used for enabling and disabling U
On powerpc, switch tables are relative, than means the address of the
table is added to the value of the entry in order to get the pointed
address: (r10 is the table address, r4 the index in the table)
lis r10,0 <== Load r10 with upper part of .rodata address
R_PPC_
A comment was introduced by commit 113d4bc90483 ("objtool: Fix
clang switch table edge case") and wrongly moved by
commit d871f7b5a6a2 ("objtool: Refactor jump table code to support
other architectures") without the piece of code added with the
comment in the original commit.
Fixes: d871f7b5a6a2 (
struct jump_entry {
s32 code;
s32 target;
long key;
};
It means that the size of the third argument depends on
whether we are building a 32 bits or 64 bits kernel.
Therefore JUMP_ENTRY_SIZE must depend on elf_class_addrsize(elf).
To
Those two functions loop over the instructions of a function.
Merge the two loops in order to ease enhancement of table end
in a following patch.
Signed-off-by: Christophe Leroy
---
tools/objtool/check.c | 22 ++
1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/
This commit is copied from commit bfb1a7c91fb7 ("x86/bug: Merge
annotate_reachable() into _BUG_FLAGS() asm")
'twi 31,0,0' is a BUG instruction, which is by default a dead end.
But the same instruction is used for WARNINGs and the execution
resumes with the following instruction. Mark it reachable
A function can contain nested switch tables using different registers
as base address.
In order to avoid failure in tracking those switch tables, the register
containing the base address needs to be taken into account.
To do so, add a 5 bits field in struct instruction that will hold the
ID of th
In order to implement UACCESS validation, objtool support
for powerpc needs to be enhanced to decode more instructions.
It also requires implementation of switch tables finding.
On PPC32 it is similar to x86, switch tables are anonymous in .rodata,
the difference is that the value is relative to i
In glibc, the fchmodat(3) function has a flags argument according to the
POSIX specification [1], but kernel syscalls has no such argument.
Therefore, libc implementations do workarounds using /proc. However,
this requires procfs to be mounted and accessible.
This patch set adds fchmodat2(), a new
From: Palmer Dabbelt
The next patch defines a very similar interface, which I copied from
this definition. Since I'm touching it anyway I don't see any reason
not to just go fix this one up.
Signed-off-by: Palmer Dabbelt
Acked-by: Arnd Bergmann
---
include/linux/syscalls.h | 2 +-
1 file cha
On the userspace side fchmodat(3) is implemented as a wrapper
function which implements the POSIX-specified interface. This
interface differs from the underlying kernel system call, which does not
have a flags argument. Most implementations require procfs [1][2].
There doesn't appear to be a good
From: Palmer Dabbelt
This registers the new fchmodat2 syscall in most places as nuber 452,
with alpha being the exception where it's 562. I found all these sites
by grepping for fspick, which I assume has found me everything.
Signed-off-by: Palmer Dabbelt
Signed-off-by: Alexey Gladkov
---
ar
The test marks as skipped if a syscall with the AT_SYMLINK_NOFOLLOW flag
fails. This is because not all filesystems support changing the mode
bits of symlinks properly. These filesystems return an error but change
the mode bits:
newfstatat(4, "regfile", {st_mode=S_IFREG|0640, st_size=0, ...},
AT_
On Tue, Jul 11, 2023, at 18:16, Alexey Gladkov wrote:
> From: Palmer Dabbelt
>
> This registers the new fchmodat2 syscall in most places as nuber 452,
> with alpha being the exception where it's 562. I found all these sites
> by grepping for fspick, which I assume has found me everything.
>
> Sig
From: Palmer Dabbelt
That add support for this new syscall in tools such as 'perf trace'.
Signed-off-by: Palmer Dabbelt
Signed-off-by: Alexey Gladkov
---
tools/include/uapi/asm-generic/unistd.h | 5 -
tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl | 2 ++
tools/perf/arch/
On Tue, Jul 11, 2023 at 4:09 AM Leon Romanovsky wrote:
>
> On Tue, Jul 11, 2023 at 02:01:41PM +0300, Leon Romanovsky wrote:
> > On Tue, Jul 11, 2023 at 12:39:34PM +0200, Vlastimil Babka wrote:
> > > On 7/11/23 12:35, Leon Romanovsky wrote:
> > > >
> > > > On Mon, Feb 27, 2023 at 09:35:59AM -0800,
On Tue, Jul 11, 2023 at 06:16:04PM +0200, Alexey Gladkov wrote:
> On the userspace side fchmodat(3) is implemented as a wrapper
> function which implements the POSIX-specified interface. This
> interface differs from the underlying kernel system call, which does not
> have a flags argument. Most im
On Tue, Jul 11, 2023 at 09:35:13AM -0700, Suren Baghdasaryan wrote:
> On Tue, Jul 11, 2023 at 4:09 AM Leon Romanovsky wrote:
> >
> > On Tue, Jul 11, 2023 at 02:01:41PM +0300, Leon Romanovsky wrote:
> > > On Tue, Jul 11, 2023 at 12:39:34PM +0200, Vlastimil Babka wrote:
> > > > On 7/11/23 12:35, Leo
On 11.07.23 06:48, Aneesh Kumar K.V wrote:
Add a new kconfig option that can be selected if we want to allow
pageblock alignment by reserving pages in the vmemmap altmap area.
This implies we will be reserving some pages for every memoryblock
This also allows the memmap on memory feature to be wi
Hello,
On Tue, Jul 11, 2023 at 9:18 AM Alexey Gladkov wrote:
>
> From: Palmer Dabbelt
>
> That add support for this new syscall in tools such as 'perf trace'.
>
> Signed-off-by: Palmer Dabbelt
> Signed-off-by: Alexey Gladkov
> ---
> tools/include/uapi/asm-generic/unistd.h | 5
On Tue, Jul 11, 2023 at 10:19:35AM -0700, Namhyung Kim wrote:
> Hello,
>
> On Tue, Jul 11, 2023 at 9:18 AM Alexey Gladkov wrote:
> >
> > From: Palmer Dabbelt
> >
> > That add support for this new syscall in tools such as 'perf trace'.
> >
> > Signed-off-by: Palmer Dabbelt
> > Signed-off-by: Ale
On Thu, 6 Jul 2023 15:49:39 +0900
David Stevens wrote:
> On Wed, Jul 5, 2023 at 10:19___PM Zhi Wang wrote:
> >
> > On Tue, 4 Jul 2023 16:50:48 +0900
> > David Stevens wrote:
> >
> > > From: David Stevens
> > >
> > > Make it so that __kvm_follow_pfn does not imply FOLL_GET. This allows
> > >
On Tue, 11 Jul 2023 18:16:02 +0200, Alexey Gladkov wrote:
> In glibc, the fchmodat(3) function has a flags argument according to the
> POSIX specification [1], but kernel syscalls has no such argument.
> Therefore, libc implementations do workarounds using /proc. However,
> this requires procfs to
On Wed, 5 Jul 2023 18:08:17 +0900
David Stevens wrote:
> On Wed, Jul 5, 2023 at 5:47___PM Zhi Wang wrote:
> >
> > On Tue, 4 Jul 2023 16:50:47 +0900
> > David Stevens wrote:
> >
> > > From: David Stevens
> > >
> > > Introduce __kvm_follow_pfn, which will replace __gfn_to_pfn_memslot.
> > > _
On Tue, Jul 11, 2023 at 01:28:04PM +0100, Matthew Wilcox wrote:
> On Tue, Jul 11, 2023 at 01:25:43PM +0200, Alexey Gladkov wrote:
> > -static int do_fchmodat(int dfd, const char __user *filename, umode_t mode)
> > +static int do_fchmodat4(int dfd, const char __user *filename, umode_t
> > mode, int
On Tue, Jul 11, 2023 at 01:52:01PM +0200, Christian Brauner wrote:
> On Tue, Jul 11, 2023 at 01:42:19PM +0200, Arnd Bergmann wrote:
> > On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> > > From: Palmer Dabbelt
> > >
> > > On the userspace side fchmodat(3) is implemented as a wrapper
> > > f
On Tue, Jul 11, 2023 at 02:10:58PM +0200, Florian Weimer wrote:
> * Alexey Gladkov:
>
> > The test marks as skipped if a syscall with the AT_SYMLINK_NOFOLLOW flag
> > fails. This is because not all filesystems support changing the mode
> > bits of symlinks properly. These filesystems return an err
On Tue, Jul 11, 2023 at 02:51:01PM +0200, Alexey Gladkov wrote:
> On Tue, Jul 11, 2023 at 01:52:01PM +0200, Christian Brauner wrote:
> > On Tue, Jul 11, 2023 at 01:42:19PM +0200, Arnd Bergmann wrote:
> > > On Tue, Jul 11, 2023, at 13:25, Alexey Gladkov wrote:
> > > > From: Palmer Dabbelt
> > > >
>
On Tue, Jul 11, 2023 at 02:24:51PM +0200, Florian Weimer wrote:
> * Alexey Gladkov:
>
> > This patch set adds fchmodat4(), a new syscall. The actual
> > implementation is super simple: essentially it's just the same as
> > fchmodat(), but LOOKUP_FOLLOW is conditionally set based on the flags.
> >
On Tue, Jul 11, 2023 at 04:01:03PM +0200, Christian Brauner wrote:
> On Tue, Jul 11, 2023 at 02:51:01PM +0200, Alexey Gladkov wrote:
> > On Tue, Jul 11, 2023 at 01:52:01PM +0200, Christian Brauner wrote:
> > > On Tue, Jul 11, 2023 at 01:42:19PM +0200, Arnd Bergmann wrote:
> > > > On Tue, Jul 11, 20
Hi--
On 7/10/23 02:27, Kajol Jain wrote:
> Add details of the new hv-gpci interface file called
> "processor_bus_topology" in the ABI documentation.
>
> Signed-off-by: Kajol Jain
> ---
> .../sysfs-bus-event_source-devices-hv_gpci| 32 +++
> 1 file changed, 32 insertions(+)
>
Hi--
On 7/10/23 02:27, Kajol Jain wrote:
> Add details of the new hv-gpci interface file called
> "processor_config" in the ABI documentation.
>
> Signed-off-by: Kajol Jain
> ---
> .../sysfs-bus-event_source-devices-hv_gpci| 32 +++
> 1 file changed, 32 insertions(+)
>
> di
Hi--
On 7/10/23 02:27, Kajol Jain wrote:
> Add details of the new hv-gpci interface file called
> "affinity_domain_via_virtual_processor" in the ABI documentation.
>
> Signed-off-by: Kajol Jain
> ---
> .../sysfs-bus-event_source-devices-hv_gpci| 32 +++
> 1 file changed, 32
Hi,
On 7/10/23 02:27, Kajol Jain wrote:
> Add details of the new hv-gpci interface file called
> "affinity_domain_via_domain" in the ABI documentation.
>
> Signed-off-by: Kajol Jain
> ---
> .../sysfs-bus-event_source-devices-hv_gpci| 32 +++
> 1 file changed, 32 insertions(+
Hi,
Same correction comments as in the other 4 patches (not repeated here).
On 7/10/23 02:27, Kajol Jain wrote:
> Add details of the new hv-gpci interface file called
> "affinity_domain_via_partition" in the ABI documentation.
>
> Signed-off-by: Kajol Jain
> ---
> .../sysfs-bus-event_source-d
On Tue, 2023-07-11 at 08:47 -0400, Stefan Berger wrote:
>
> On 7/10/23 17:23, Jarkko Sakkinen wrote:
> > On Thu, 2023-06-15 at 22:37 +1000, Michael Ellerman wrote:
> > > There's code in prom_instantiate_sml() to do a "SML handover" (Stored
> > > Measurement Log) from OF to Linux, before Linux shut
On Tue, Jul 11, 2023, Zhi Wang wrote:
> On Thu, 6 Jul 2023 15:49:39 +0900
> David Stevens wrote:
>
> > On Wed, Jul 5, 2023 at 10:19___PM Zhi Wang wrote:
> > >
> > > On Tue, 4 Jul 2023 16:50:48 +0900
> > > David Stevens wrote:
> > > If yes, do we have to use FOLL_GET to resolve GFN associated w
> Sorry for the late response. But I found some old discussions with the
> conclusion to be not converting old users. Has this been changed later on?
> https://lwn.net/Articles/659214/
>
@Kees Cook what's your advice here?
On 7/11/23 10:49 PM, David Hildenbrand wrote:
> On 11.07.23 06:48, Aneesh Kumar K.V wrote:
>> Add a new kconfig option that can be selected if we want to allow
>> pageblock alignment by reserving pages in the vmemmap altmap area.
>> This implies we will be reserving some pages for every memoryblock
Hello:
This series was applied to netdev/net-next.git (main)
by Jakub Kicinski :
On Mon, 10 Jul 2023 09:19:38 +0200 you wrote:
> Hello,
>
> v2 of this series was sent in June[1], code changes since then only affect
> patch #1 where the dev_err invocation was adapted to emit the error code of
> d
Here is v3 of the series of patches to mm (and a few architectures), based
on v6.5-rc1 which includes the preceding two series (thank you!): in which
khugepaged takes advantage of pte_offset_map[_lock]() allowing for pmd
transitions. Differences from v1 and v2 are noted patch by patch below.
This
Before putting them to use (several commits later), add rcu_read_lock()
to pte_offset_map(), and rcu_read_unlock() to pte_unmap(). Make this a
separate commit, since it risks exposing imbalances: prior commits have
fixed all the known imbalances, but we may find some have been missed.
Signed-off-
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