Jeff Layton wrote:
> Correct. We'd lose some fidelity in currently stored timestamps, but as
> Linus and Ted pointed out, anything below ~100ns granularity is
> effectively just noise, as that's the floor overhead for calling into
> the kernel. It's hard to argue that any application needs that
Le 28/09/2023 à 21:48, Hari Bathini a écrit :
> patch_instruction() entails setting up pte, patching the instruction,
> clearing the pte and flushing the tlb. If multiple instructions need
> to be patched, every instruction would have to go through the above
> drill unnecessarily. Instead, introd
While running kernel selftests (powerpc/mce) following warning is triggered
TAP version 13
1..1
# timeout set to 45
# selftests: powerpc/mce: inject-ra-err
[ 37.851967] Disabling lock debugging due to kernel taint
[ 37.851977] MCE: CPU19: machine check (Severe) Real address Load/Store
(forei
On Thu, Sep 28, 2023 at 10:41:34AM -0700, Linus Torvalds wrote:
> On Thu, 28 Sept 2023 at 04:06, Jeff Layton wrote:
> >
> > Move i_blocks up above the i_lock, which moves the new 4 byte hole to
> > just after the timestamps, without changing the size of the structure.
>
> I'm sure others have men
> It is a lot of churn though.
I think that i_{a,c,m}time shouldn't be accessed directly by
filesystems same as no filesystem should really access i_{g,u}id which
we also provide i_{g,u}id_{read,write}() accessors for. The mode is
another example where really most often should use helpers because
On Fri, 2023-09-29 at 11:44 +0200, Christian Brauner wrote:
> > It is a lot of churn though.
>
> I think that i_{a,c,m}time shouldn't be accessed directly by
> filesystems same as no filesystem should really access i_{g,u}id which
> we also provide i_{g,u}id_{read,write}() accessors for. The mode
Le 28/09/2023 à 14:53, Dan Whitehouse a écrit :
> [Vous ne recevez pas souvent de courriers de d...@dim-sum.org. D?couvrez
> pourquoi ceci est important ? https://aka.ms/LearnAboutSenderIdentification ]
>
> Hi,
> I'm running Debian on an old Powermac (32-bit PPC G4).
> I'm seeing kernel panics
Hi Herve,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.6-rc3 next-20230929]
[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 Thu, Sep 28, 2023 at 12:51:15PM -0500, Steve Wahl wrote:
> On Thu, Sep 28, 2023 at 03:21:36PM +0200, Joel Granados via B4 Relay wrote:
> > From: Joel Granados
> >
> > This commit comes at the tail end of a greater effort to remove the
> > empty elements at the end of the ctl_table arrays (sent
On Thu, Sep 28, 2023 at 03:26:16PM +, Wei Liu wrote:
> Please change the prefix to "Drivers: hv:" in the subject line in the
> two patches.
>
> On Thu, Sep 28, 2023 at 03:21:39PM +0200, Joel Granados via B4 Relay wrote:
> > From: Joel Granados
> >
> > This commit comes at the tail end of a g
On Thu, Sep 28, 2023 at 03:36:55PM +0200, Greg Kroah-Hartman wrote:
> On Thu, Sep 28, 2023 at 03:21:26PM +0200, Joel Granados via B4 Relay wrote:
> > From: Joel Granados
> >
> > This commit comes at the tail end of a greater effort to remove the
> > empty elements at the end of the ctl_table arra
[CCing the regression list, as it should be in the loop for regressions:
https://docs.kernel.org/admin-guide/reporting-regressions.html]
[TLDR: I'm adding this report to the list of tracked Linux kernel
regressions; the text you find below is based on a few templates
paragraphs you might have enco
Thanks Christophe, I'll give that a try over the weekend if I get a
chance, and I'll also let the Debian devs know if they've not spotted
this yet.
--
Dan Whitehouse
GPG: 3AA4 369C 86E1 4939 D420 AB25 D0DC 7BDD CA92 AD2E
Telephone: +44(0)203 0955088
On Thu, Sep 28, 2023 at 03:26:16PM +, Wei Liu wrote:
> Please change the prefix to "Drivers: hv:" in the subject line in the
> two patches.
I'll change the commit message for the 14/15 patch from "hyper-v/azure"
to "Drivers: hv:". But I only see one patch that needs this. Which is
the other one
In the plpar_hcall trace code, currently we use r0
to store the ORed result of r4. But this value is not
used subsequently in the code. Hence remove this unused
save to r0 in plpar_hcall and plpar_hcall9
Suggested-by: Naveen N Rao
Signed-off-by: Athira Rajeev
---
arch/powerpc/platforms/pseries/
In powerpc pseries system, below behaviour is observed while
enabling tracing on hcall:
# cd /sys/kernel/debug/tracing/
# cat events/powerpc/hcall_exit/enable
0
# echo 1 > events/powerpc/hcall_exit/enable
# ls
-bash: fork: Bad address
Above is from
On Tue, 19 Sep 2023 05:22:51 +, Justin Stitt wrote:
> `strncpy` is deprecated for use on NUL-terminated destination strings [1].
>
> A suitable replacement is `memcpy` as we've already precisely calculated
> the number of bytes to copy while `buf` has been explicitly
> zero-initialized:
> |
On Fri, Sep 22, 2023 at 12:58:03PM +0100, Ryan Roberts wrote:
> In order to fix a bug, arm64 needs to be told the size of the huge page
> for which the pte is being set in set_huge_pte_at(). Provide for this by
> adding an `unsigned long sz` parameter to the function. This follows the
> same patter
On Fri, 29 Sep 2023 12:44:15 +0100 Ryan Roberts wrote:
> In preparation for adding support for anonymous large folios that are
> smaller than the PMD-size, introduce 2 new sysfs files that will be used
> to control the new behaviours via the transparent_hugepage interface.
> For now, the kernel s
On Thu, 28 Sept 2023 at 20:50, Amir Goldstein wrote:
>
> OTOH, it is perfectly fine if the vfs wants to stop providing sub 100ns
> services to filesystems. It's just going to be the fs problem and the
> preserved pre-historic/fine-grained time on existing files would only
> need to be provided in
On Wed, Sep 27, 2023 at 11:17 AM Athira Rajeev
wrote:
>
> Testcase "Parsing of all PMU events from sysfs" parse events for
> all PMUs, and not just cpu. In case of powerpc, the PowerVM
> environment supports events from hv_24x7 and hv_gpci PMU which
> is of example format like below:
>
> - hv_24x7
> On 30-Sep-2023, at 11:23 AM, Namhyung Kim wrote:
>
> On Wed, Sep 27, 2023 at 11:17 AM Athira Rajeev
> wrote:
>>
>> Testcase "Parsing of all PMU events from sysfs" parse events for
>> all PMUs, and not just cpu. In case of powerpc, the PowerVM
>> environment supports events from hv_24x7 and
> On 28-Sep-2023, at 9:24 AM, Namhyung Kim wrote:
>
> On Tue, Sep 26, 2023 at 9:29 PM Athira Rajeev
> wrote:
>>
>>
>>
>>> On 25-Sep-2023, at 1:34 PM, kajoljain wrote:
>>>
>>>
>>>
>>> On 9/7/23 22:45, Athira Rajeev wrote:
From: root
shellcheck was run on perf tool shell
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