From: Yicong Yang
Armv8.7 introduces single-copy atomic 64-byte loads and stores
instructions and its variants named under FEAT_{LS64, LS64_V,
LS64_ACCDATA}. These features are identified by ID_AA64ISAR1_EL1.LS64
and the use of such instructions in userspace (EL0) can be trapped.
In order to supp
From: Yicong Yang
Instructions introduced by FEAT_{LS64, LS64_V, LS64_ACCDATA} is
controlled by HCRX_EL2.{EnALS, EnASR, EnAS0}. Additionally
access of ACCDATA_EL1 for FEAT_LS64_ACCDATA is also affected by
FGT. Configure all of these to allow usage at EL0/1.
This doesn't mean these instructions a
On 02.12.24 15:45, Mauro Carvalho Chehab wrote:
> Em Mon, 2 Dec 2024 14:54:56 +0100
> Thorsten Leemhuis escreveu:
>
>> On 02.12.24 11:02, Mauro Carvalho Chehab wrote:
>>> Em Mon, 2 Dec 2024 09:28:57 +0100
>>> Mauro Carvalho Chehab escreveu:
>>>
> +Tagging people requires permission
>
On 2024-11-09 04:10, Dragan Simic wrote:
On 2024-11-08 20:12, Dan Williams wrote:
Dragan Simic wrote:
I'm fully aware that we may be reluctant to supporting additional
tags,
because we may then end up with a whole bunch of strange tags that
might
be a bit hard to understand and use properly,
Em Mon, 2 Dec 2024 16:54:49 +0100
Thorsten Leemhuis escreveu:
> On 02.12.24 15:45, Mauro Carvalho Chehab wrote:
> > Em Mon, 2 Dec 2024 14:54:56 +0100
> > Thorsten Leemhuis escreveu:
> >
> >> On 02.12.24 11:02, Mauro Carvalho Chehab wrote:
> >>> Em Mon, 2 Dec 2024 09:28:57 +0100
> >>> Mauro
Hi Mauro,
On Mon, Dec 02, 2024 at 10:26:20AM +0100, Mauro Carvalho Chehab wrote:
> As the media subsystem will experiment with a multi-committers model,
> update the Maintainer's entry profile to the new rules, and add a file
> documenting the process to become a committer and to maintain such
> r
As the media subsystem will experiment with a multi-committers model,
update the Maintainer's entry profile to the new rules, and add a file
documenting the process to become a committer and to maintain such
rights.
Signed-off-by: Mauro Carvalho Chehab
Signed-off-by: Hans Verkuil
Reviewed-by: Ri
The media subsystem used to have a multi-commiter's model in the
past, but things didn't go well on that time, and we had to move to
a centralized model.
As the community has evolved, and as there are now new policies in
place like CoC, let's experiment with a multi-committers again.
The model we
Em Mon, 2 Dec 2024 09:28:57 +0100
Mauro Carvalho Chehab escreveu:
> > +Tagging people requires permission
> > +--
> > +
> > +Be careful in the addition of tags to your patches, as all except for Cc:,
> > +Reported-by:, and Suggested-by: need explicit permission of
Hi Mauro,
On Fri, Nov 29, 2024 at 11:29:52AM +0100, Mauro Carvalho Chehab wrote:
> Em Thu, 28 Nov 2024 21:07:07 +0200 Laurent Pinchart escreveu:
>
> > > With that in mind, every committer has duties of reviewing other
> > > developer's patches submitted for the drivers that they're listed as
> >
On Mon, Dec 02, 2024 at 04:00:47PM +0100, Dragan Simic wrote:
> On 2024-11-09 04:10, Dragan Simic wrote:
> > On 2024-11-08 20:12, Dan Williams wrote:
> > > Dragan Simic wrote:
> > > > I'm fully aware that we may be reluctant to supporting
> > > > additional tags,
> > > > because we may then end up
On 02.12.24 11:02, Mauro Carvalho Chehab wrote:
> Em Mon, 2 Dec 2024 09:28:57 +0100
> Mauro Carvalho Chehab escreveu:
>
>>> +Tagging people requires permission
>>> +--
>>> +
>>> +Be careful in the addition of tags to your patches, as all except for Cc:,
>>> +Report
Em Mon, 2 Dec 2024 14:54:56 +0100
Thorsten Leemhuis escreveu:
> On 02.12.24 11:02, Mauro Carvalho Chehab wrote:
> > Em Mon, 2 Dec 2024 09:28:57 +0100
> > Mauro Carvalho Chehab escreveu:
> >
> >>> +Tagging people requires permission
> >>> +--
> >>> +
> >>> +Be c
From: Yicong Yang
0x35 indicates IMPLEMENTATION DEFINED fault for Unsupported Exclusive or
Atomic access. Add ESR_ELx_FSC definition and corresponding wrapper.
Signed-off-by: Yicong Yang
---
arch/arm64/include/asm/esr.h | 8
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/inc
From: Yicong Yang
FEAT_LS64* instructions only support to access Device/Uncacheable
memory, otherwise a data abort for unsupported Exclusive or atomic
access (0x35) is generated per spec. It's implementation defined
whether the target exception level is routed and is possible to
implemented as ro
From: Yicong Yang
Armv8.7 introduces single-copy atomic 64-byte loads and stores
instructions and its variants named under FEAT_{LS64, LS64_V,
LS64_ACCDATA}. Add support for Armv8.7 FEAT_{LS64, LS64_V, LS64_ACCDATA}:
- Add identifying and enabling in the cpufeature list
- Expose the support of th
On 02/12/2024 10:26, Mauro Carvalho Chehab wrote:
> The media subsystem used to have a multi-commiter's model in the
> past, but things didn't go well on that time, and we had to move to
> a centralized model.
>
> As the community has evolved, and as there are now new policies in
> place like CoC,
Point out that explicit permission is usually needed to tag other people
in changes, but mention that implicit permission can be sufficient in
certain cases. This fixes slight inconsistencies between Reported-by:
and Suggested-by: and makes the usage more intuitive.
While at it, explicitly mention
Em Mon, 2 Dec 2024 09:14:19 +0100
Thorsten Leemhuis escreveu:
> Point out that explicit permission is usually needed to tag other people
> in changes, but mention that implicit permission can be sufficient in
> certain cases. This fixes slight inconsistencies between Reported-by:
> and Suggested
Mention the Suggested-by: tag in 5.Posting.rst in a way similar to
submitting-patches.rst, which according to the header of the latter is
the less detailed document of the two.
Reviewed-by: Greg Kroah-Hartman
Signed-off-by: Thorsten Leemhuis
---
v3:
- first version, split out from another patch-
From: Yicong Yang
Add tests for FEAT_{LS64, LS64_V, LS64_ACCDATA}. Issue related
instructions if feature presents, no SIGILL should be received.
Since such instructions can only operate on Device memory or
non-cacheable memory, we may received a SIGBUS during the test.
Just ignore it since we onl
On 02.12.24 17:17, Mauro Carvalho Chehab wrote:
> Em Mon, 2 Dec 2024 16:54:49 +0100
> Thorsten Leemhuis escreveu:
>> On 02.12.24 15:45, Mauro Carvalho Chehab wrote:
>>> Em Mon, 2 Dec 2024 14:54:56 +0100
>>> Thorsten Leemhuis escreveu:
On 02.12.24 11:02, Mauro Carvalho Chehab wrote:
> E
Em Tue, 3 Dec 2024 07:25:43 +0100
Thorsten Leemhuis escreveu:
> On 02.12.24 17:17, Mauro Carvalho Chehab wrote:
> > Em Mon, 2 Dec 2024 16:54:49 +0100
> > Thorsten Leemhuis escreveu:
> >> On 02.12.24 15:45, Mauro Carvalho Chehab wrote:
> >>> Em Mon, 2 Dec 2024 14:54:56 +0100
> >>> Thorsten Le
On 02/12/2024 10:26, Mauro Carvalho Chehab wrote:
> As the media subsystem will experiment with a multi-committers model,
> update the Maintainer's entry profile to the new rules, and add a file
> documenting the process to become a committer and to maintain such
> rights.
>
> Signed-off-by: Mauro
Em Mon, 2 Dec 2024 16:03:45 +0100
Hans Verkuil escreveu:
> On 02/12/2024 10:26, Mauro Carvalho Chehab wrote:
> > The media subsystem used to have a multi-commiter's model in the
> > past, but things didn't go well on that time, and we had to move to
> > a centralized model.
> >
> > As the commun
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