On Fri, Feb 17, 2023 at 10:02:26AM +0530, Sathvika Vasireddy wrote:
> objtool throws the following warning:
> arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x6128:
> unannotated intra-function call
>
> Fix the warning by annotating start_initialization_book3s symbol with the
>
On Fri, Feb 17, 2023 at 12:35:17PM +1100, Michael Ellerman wrote:
> Josh Poimboeuf writes:
> > On Thu, Feb 16, 2023 at 02:40:31PM +1100, Stephen Rothwell wrote:
> >> Hi all,
> >>
> >> After merging the powerpc tree, today's linux-next build (powerpc
> >> pseries_le_defconfig) produced this
Le 17/02/2023 à 00:23, Rohan McLure a écrit :
>> On 16 Feb 2023, at 6:14 pm, Christophe Leroy
>> wrote:
>>
>>
>>
>> Le 16/02/2023 à 06:09, Rohan McLure a écrit :
>>> Enable HAVE_ARCH_KCSAN on all powerpc platforms, permitting use of the
>>> kernel concurrency sanitiser through the
Le 17/02/2023 à 00:52, Michael Ellerman a écrit :
> Herve Codina writes:
>> Hi,
>>
>> This series adds support for audio using the QMC controller available in
>> some Freescale PowerQUICC SoCs.
>
> Who's going to take this series?
>
> By lines of code it's mostly in drivers/soc/fsl, so I was
Hi all,
On Fri, 17 Feb 2023 10:02:26 +0530 Sathvika Vasireddy
wrote:
>
> objtool throws the following warning:
> arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x6128:
> unannotated intra-function call
>
> Fix the warning by annotating start_initialization_book3s symbol with the
>
objtool throws the following warning:
arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x6128:
unannotated intra-function call
Fix the warning by annotating start_initialization_book3s symbol with the
SYM_FUNC_START_LOCAL and SYM_FUNC_END macros.
Reported-by: Stephen Rothwell
On Thu, Feb 16, 2023 at 9:12 PM Yu Zhao wrote:
>
> This patch adds kvm_arch_test_clear_young() for the vast majority of
> VMs that are not nested and run on hardware with Radix MMU enabled.
>
> It relies on two techniques, RCU and cmpxchg, to safely test and clear
> the accessed bit without
On Thu, Feb 16, 2023 at 9:12 PM Yu Zhao wrote:
>
> This patch adds kvm_arch_test_clear_young() for the vast majority of
> VMs that are not pKVM and run on hardware that sets the accessed bit
> in KVM page tables.
>
> It relies on two techniques, RCU and cmpxchg, to safely test and clear
> the
On Thu, Feb 16, 2023 at 9:12 PM Yu Zhao wrote:
>
> This patch adds kvm_arch_test_clear_young() for the vast majority of
> VMs that are not nested and run on hardware that sets the accessed bit
> in TDP MMU page tables.
>
> It relies on two techniques, RCU and cmpxchg, to safely test and clear
>
This patch adds kvm_arch_test_clear_young() for the vast majority of
VMs that are not nested and run on hardware with Radix MMU enabled.
It relies on two techniques, RCU and cmpxchg, to safely test and clear
the accessed bit without taking the MMU lock. The former protects KVM
page tables from
An existing selftest can quickly demonstrate the effectiveness of this
patch. On a generic workstation equipped with 128 CPUs and 256GB DRAM:
$ sudo max_guest_memory_test -c 64 -m 250 -s 250
MGLRU run2
---
Before~600s
After ~50s
Off ~250s
kswapd
This patch adds kvm_arch_test_clear_young() for the vast majority of
VMs that are not pKVM and run on hardware that sets the accessed bit
in KVM page tables.
It relies on two techniques, RCU and cmpxchg, to safely test and clear
the accessed bit without taking the MMU lock. The former protects
This patch adds kvm_arch_test_clear_young() for the vast majority of
VMs that are not nested and run on hardware that sets the accessed bit
in TDP MMU page tables.
It relies on two techniques, RCU and cmpxchg, to safely test and clear
the accessed bit without taking the MMU lock. The former
mmu_notifier_test_clear_young() allows the caller to safely test and
clear the accessed bit in KVM PTEs without taking the MMU lock.
This patch adds the generic infrastructure to invoke the subsequent
arch-specific patches. The arch-specific implementations generally
rely on two techniques: RCU
TLDR
This patchset RCU-protects KVM page tables and compare-and-exchanges
KVM PTEs with the accessed bit set by hardware. It significantly
improves the performance of guests when the host is under heavy
memory pressure.
ChromeOS has been using a similar approach [1] since mid 2021 and it
was
On Thu, Feb 16, 2023 at 11:43 AM Suren Baghdasaryan wrote:
>
> On Thu, Feb 16, 2023 at 7:44 AM Matthew Wilcox wrote:
> >
> > On Wed, Feb 15, 2023 at 09:17:41PM -0800, Suren Baghdasaryan wrote:
> > > When vma->anon_vma is not set, page fault handler will set it by either
> > > reusing anon_vma of
tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
next
branch HEAD: b5ae1cde0f341c936e84e5a9c49f0cb81ba4df1c powerpc/epapr: Don't use
wrteei on non booke
elapsed time: 727m
configs tested: 43
configs skipped: 3
The following configs have been built successfully.
Josh Poimboeuf writes:
> On Thu, Feb 16, 2023 at 02:40:31PM +1100, Stephen Rothwell wrote:
>> Hi all,
>>
>> After merging the powerpc tree, today's linux-next build (powerpc
>> pseries_le_defconfig) produced this warning:
>>
>> arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x6128:
In the fix reconnecting hash__tlb_flush() to tlb_flush() the
void return on radix__tlb_flush() was not restored and subsequently
falls through to the restored hash__tlb_flush().
Guard hash__tlb_flush() under an else to prevent this.
Fixes: 1665c027afb2 ("powerpc/64s: Reconnect tlb_flush() to
Herve Codina writes:
> Hi,
>
> This series adds support for audio using the QMC controller available in
> some Freescale PowerQUICC SoCs.
Who's going to take this series?
By lines of code it's mostly in drivers/soc/fsl, so I was expecting it
would go via that tree.
Or is it a sound series that
> On 16 Feb 2023, at 7:09 pm, Marco Elver wrote:
>
> On Thu, Feb 16, 2023 at 07:12AM +, Christophe Leroy wrote:
>>
>>
>> Le 16/02/2023 à 06:09, Rohan McLure a écrit :
>>> KCSAN instruments calls to atomic builtins, and will in turn call these
>>> builtins itself. As such, architectures
> On 16 Feb 2023, at 6:14 pm, Christophe Leroy
> wrote:
>
>
>
> Le 16/02/2023 à 06:09, Rohan McLure a écrit :
>> Enable HAVE_ARCH_KCSAN on all powerpc platforms, permitting use of the
>> kernel concurrency sanitiser through the CONFIG_KCSAN_* kconfig options.
>>
>> Boots and passes selftests
> -Original Message-
> From: Herve Codina
> Sent: Thursday, February 16, 2023 7:42 AM
> To: Herve Codina ; Leo Li
> ; Rob Herring ; Krzysztof
> Kozlowski ; Liam Girdwood
> ; Mark Brown ; Christophe
> Leroy ; Michael Ellerman
> ; Nicholas Piggin ; Qiang Zhao
> ; Jaroslav Kysela ;
On Thu, Feb 16, 2023 at 7:44 AM Matthew Wilcox wrote:
>
> On Wed, Feb 15, 2023 at 09:17:41PM -0800, Suren Baghdasaryan wrote:
> > When vma->anon_vma is not set, page fault handler will set it by either
> > reusing anon_vma of an adjacent VMA if VMAs are compatible or by
> > allocating a new one.
On Thu, Feb 16, 2023 at 7:34 AM Liam R. Howlett wrote:
>
>
> First, sorry I didn't see this before v3..
Feedback at any time is highly appreciated!
>
> * Suren Baghdasaryan [230216 00:18]:
> > While unmapping VMAs, adjacent VMAs might be able to grow into the area
> > being unmapped. In such
Include to make sure play_dead() matches its prototype going
forward.
Acked-by: Florian Fainelli
Reviewed-by: Philippe Mathieu-Daudé
Signed-off-by: Josh Poimboeuf
---
arch/mips/cavium-octeon/smp.c | 1 +
arch/mips/kernel/smp-bmips.c | 1 +
arch/mips/kernel/smp-cps.c| 1 +
cpu_die() doesn't return. Annotate it as such. By extension this also
makes arch_cpu_idle_dead() noreturn.
Acked-by: Mark Rutland
Signed-off-by: Josh Poimboeuf
---
arch/arm64/include/asm/smp.h | 2 +-
arch/arm64/kernel/smp.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff
arch_cpu_idle_dead() doesn't return. Make that visible to the compiler
with an unreachable() code annotation.
Signed-off-by: Josh Poimboeuf
---
arch/arm/kernel/smp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index
On Wed, Feb 15, 2023 at 10:12 PM Athira Rajeev
wrote:
>
> Power10 Performance Monitoring Unit (PMU) provides events
> to understand stall cycles of different pipeline stages.
> These events along with completed instructions provides
> useful metrics for application tuning.
>
> Patch implements
On Thu, Feb 16, 2023 at 02:40:31PM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the powerpc tree, today's linux-next build (powerpc
> pseries_le_defconfig) produced this warning:
>
> arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x6128: unannotated
> intra-function call
>
On Wed, Feb 15, 2023 at 09:17:41PM -0800, Suren Baghdasaryan wrote:
> When vma->anon_vma is not set, page fault handler will set it by either
> reusing anon_vma of an adjacent VMA if VMAs are compatible or by
> allocating a new one. find_mergeable_anon_vma() walks VMA tree to find
> a compatible
First, sorry I didn't see this before v3..
* Suren Baghdasaryan [230216 00:18]:
> While unmapping VMAs, adjacent VMAs might be able to grow into the area
> being unmapped. In such cases write-lock adjacent VMAs to prevent this
> growth.
>
> Signed-off-by: Suren Baghdasaryan
> ---
>
On Thu, 9 Feb 2023 07:21:55 +
Christophe Leroy wrote:
> An easy fix would probably be to also check the suffix as a prefixed
> instruction with 0 as suffix is not valid :
>
> diff --git a/arch/powerpc/include/asm/inst.h
> b/arch/powerpc/include/asm/inst.h
> index
After contributing the component, add myself as the maintainer
for the Freescale QMC audio ASoC component.
Signed-off-by: Herve Codina
---
MAINTAINERS | 8
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index f8d0981a16ca..a677e2862878 100644
--- a/MAINTAINERS
The QMC audio is an ASoC component which provides DAIs
that use the QMC (QUICC Multichannel Controller) to transfer
the audio data.
It provides as many DAIs as the number of QMC channels it
references.
Signed-off-by: Herve Codina
---
sound/soc/fsl/Kconfig | 9 +
The QMC (QUICC mutichannel controller) is a controller
present in some PowerQUICC SoC such as MPC885.
The QMC audio is an ASoC component that uses the QMC
controller to transfer the audio data.
Signed-off-by: Herve Codina
Reviewed-by: Krzysztof Kozlowski
---
After contributing the driver, add myself as the maintainer
for the Freescale QMC controller.
Signed-off-by: Herve Codina
---
MAINTAINERS | 8
1 file changed, 8 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 0cfedb2f712c..f8d0981a16ca 100644
--- a/MAINTAINERS
+++
The QMC (QUICC Multichannel Controller) emulates up to 64
channels within one serial controller using the same TDM
physical interface routed from the TSA.
It is available in some PowerQUICC SoC such as the
MPC885 or MPC866.
It is also available on some Quicc Engine SoCs.
This current version
Add support for the QMC (QUICC Multichannel Controller)
available in some PowerQUICC SoC such as MPC885 or MPC866.
Signed-off-by: Herve Codina
---
.../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 172 ++
1 file changed, 172 insertions(+)
create mode 100644
The CPM1 command mask is defined for use with the standard
CPM1 command register as described in the user's manual:
0 |13|47|8 11|12 14| 15|
RST|- |OPCODE|CH_NUM| -|FLG|
In the QMC extension the CPM1 command register is redefined
(QMC supplement user's
The TSA (Time Slot Assigner) purpose is to route some
TDM time-slots to other internal serial controllers.
It is available in some PowerQUICC SoC such as the
MPC885 or MPC866.
It is also available on some Quicc Engine SoCs.
This current version support CPM1 SoCs only and some
enhancement are
Add support for the time slot assigner (TSA)
available in some PowerQUICC SoC such as MPC885
or MPC866.
Signed-off-by: Herve Codina
---
.../bindings/soc/fsl/cpm_qe/fsl,cpm1-tsa.yaml | 234 ++
include/dt-bindings/soc/fsl,tsa.h | 13 +
2 files changed, 247
After contributing the driver, add myself as the maintainer
for the Freescale TSA controller.
Signed-off-by: Herve Codina
---
MAINTAINERS | 9 +
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 7f86d02cb427..0cfedb2f712c 100644
--- a/MAINTAINERS
+++
Hi,
This series adds support for audio using the QMC controller available in
some Freescale PowerQUICC SoCs.
This series contains three parts in order to show the different blocks
hierarchy and their usage in this support.
The first one is related to TSA (Time Slot Assigner).
The TSA handles
From: Christophe Leroy
By taking GENERIC_IOREMAP method, the generic generic_ioremap_prot(),
generic_iounmap(), and their generic wrapper ioremap_prot(), ioremap()
and iounmap() are all visible and available to arch. Arch needs to
provide wrapper functions to override the generic versions if
On Wed, Feb 15, 2023 at 05:35:35PM -0800, Zhou nan wrote:
> usb: Fix spelling mistake in comments of gadget.
>
> Signed-off-by: Zhou nan
> ---
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
a patch that has triggered this response. He used to manually respond
to
When using the LLVM integrated assembler (llvm-as), the book3e build
fails with:
arch/powerpc/mm/nohash/tlb_low_64e.S:354:2: error: invalid instruction
tlbilxva 0,%r15
^
tlbilxva is an extended mnemonic for tlbilx, but llvm-as also doesn't
support tlbilx, despite it being an e500mc
On Thu, 16 Feb 2023 06:29:52 +
Christophe Leroy wrote:
> Can you try with :
>
> diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h
> b/arch/powerpc/include/asm/book3s/64/tlbflush.h
> index d5cd16270c5d..2bbc0fcce04a 100644
> --- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
> +++
[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 encountered already in similar form.
See link in footer if these mails annoy you.]
[CCing the regression list, as it should be in the loop
On Thu, Feb 16, 2023 at 07:12AM +, Christophe Leroy wrote:
>
>
> Le 16/02/2023 à 06:09, Rohan McLure a écrit :
> > KCSAN instruments calls to atomic builtins, and will in turn call these
> > builtins itself. As such, architectures supporting KCSAN must have
> > compiler support for these
The nest IMC (In Memory Collection) Performance Monitoring
Unit(PMU) node names are saved as "struct nest_pmus_struct"
in the "hw/imc.c" IMC code. Not all the IMC PMUs listed in
the device tree may be available. Nest IMC PMU names along with
their bit values is represented in imc availability
The nest IMC (In Memory Collection) Performance Monitoring
Unit(PMU) node names are saved in nest_pmus[] array in the
"hw/imc.c" IMC code. Not all the IMC PMUs listed in the device
tree may be available. Nest IMC PMU names along with their
bit values is represented in imc availability vector.
The
Add a function dt_find_by_name_substr() that returns the child node if
it matches till first occurence at "@" of a given name, otherwise NULL.
This is helpful for cases with node name like: "name@addr". In
scenarios where nodes are added with "name@addr" format and if the
value of "addr" is not
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