The SBI v2.0 specification is now frozen. The SBI v2.0 specification defines
SBI debug console (DBCN) extension which replaces the legacy SBI v0.1
functions sbi_console_putchar() and sbi_console_getchar().
(Refer v2.0-rc5 at https://github.com/riscv-non-isa/riscv-sbi-doc/releases)
This series adds
We add SBI debug console extension related defines/enum to the
asm/sbi.h header.
Signed-off-by: Anup Patel
Reviewed-by: Andrew Jones
---
arch/riscv/include/asm/sbi.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 5b4a
We will be implementing SBI DBCN extension for KVM RISC-V so let
us change the KVM RISC-V SBI specification version to v2.0.
Signed-off-by: Anup Patel
Reviewed-by: Andrew Jones
---
arch/riscv/include/asm/kvm_vcpu_sbi.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/ris
Currently, all SBI extensions are enabled by default which is
problematic for SBI extensions (such as DBCN) which are forwarded
to the KVM user-space because we might have an older KVM user-space
which is not aware/ready to handle newer SBI extensions. Ideally,
the SBI extensions forwarded to the K
The frozen SBI v2.0 specification defines the SBI debug console
(DBCN) extension which replaces the legacy SBI v0.1 console
functions namely sbi_console_getchar() and sbi_console_putchar().
The SBI DBCN extension needs to be emulated in the KVM user-space
(i.e. QEMU-KVM or KVMTOOL) so we forward S
We have a new SBI debug console (DBCN) extension supported by in-kernel
KVM so let us add this extension to get-reg-list test.
Signed-off-by: Anup Patel
---
tools/testing/selftests/kvm/riscv/get-reg-list.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/kvm/riscv/ge
The functions sbi_console_putchar() and sbi_console_getchar() are
not defined when CONFIG_RISCV_SBI_V01 is disabled so let us add
stub of these functions to avoid "#ifdef" on user side.
Signed-off-by: Anup Patel
Reviewed-by: Andrew Jones
---
arch/riscv/include/asm/sbi.h | 5 +
1 file change
We extend the existing RISC-V SBI earlycon support to use the new
RISC-V SBI debug console extension.
Signed-off-by: Anup Patel
Reviewed-by: Andrew Jones
---
drivers/tty/serial/Kconfig | 2 +-
drivers/tty/serial/earlycon-riscv-sbi.c | 32 +
2 files changed,
From: Atish Patra
RISC-V SBI specification supports advanced debug console
support via SBI DBCN extension.
Extend the HVC SBI driver to support it.
Signed-off-by: Atish Patra
Signed-off-by: Anup Patel
---
drivers/tty/hvc/Kconfig | 2 +-
drivers/tty/hvc/hvc_riscv_sbi.c | 82 +
Let us enable SBI based earlycon support in defconfigs for both RV32
and RV64 so that "earlycon=sbi" can be used again.
Signed-off-by: Anup Patel
Reviewed-by: Andrew Jones
---
arch/riscv/configs/defconfig | 1 +
arch/riscv/configs/rv32_defconfig | 1 +
2 files changed, 2 insertions(+)
dif
On 18/10/23 1:51 pm, Pingfan Liu wrote:
On Tue, Oct 17, 2023 at 6:39 PM Hari Bathini wrote:
On 17/10/23 7:58 am, Pingfan Liu wrote:
*** Idea ***
For kexec -p, the boot cpu can be not the cpu0, this causes the problem
of allocating memory for paca_ptrs[]. However, in theory, there is no
r
On Fri, Oct 20, 2023 at 12:51:34PM +0530, Anup Patel wrote:
> Currently, all SBI extensions are enabled by default which is
> problematic for SBI extensions (such as DBCN) which are forwarded
> to the KVM user-space because we might have an older KVM user-space
> which is not aware/ready to handle
On Fri, Oct 20, 2023 at 12:51:36PM +0530, Anup Patel wrote:
> We have a new SBI debug console (DBCN) extension supported by in-kernel
> KVM so let us add this extension to get-reg-list test.
>
> Signed-off-by: Anup Patel
> ---
> tools/testing/selftests/kvm/riscv/get-reg-list.c | 2 ++
> 1 file c
On 18.10.23 01:46, David Woodhouse wrote:
From: David Woodhouse
The xencons_connect_backend() function allocates a local interdomain
event channel with xenbus_alloc_evtchn(), then calls
bind_interdomain_evtchn_to_irq_lateeoi() to bind to that port# on the
*remote* domain.
That doesn't work ver
* Michael Ellerman [2023-10-19 15:33:16]:
> Srikar Dronamraju writes:
> > Currently cpu feature flag is checked whenever powerpc_smt_flags gets
> > called. This is an unnecessary overhead. CPU_FTR_ASYM_SMT is set based
> > on the processor and all processors will either have this set or will
> >
On Mon, Oct 16, 2023 at 10:43:01PM +1000, Nicholas Piggin wrote:
> If a queued waiter notices the lock owner or the previous waiter has
> been preempted, it attempts to mark the lock sleepy, but it does this
> as a try-set operation using the original lock value it got when
> queueing, which will b
Anup Patel writes:
> From: Atish Patra
>
> RISC-V SBI specification supports advanced debug console
> support via SBI DBCN extension.
>
> Extend the HVC SBI driver to support it.
>
> Signed-off-by: Atish Patra
> Signed-off-by: Anup Patel
> ---
> drivers/tty/hvc/Kconfig | 2 +-
> driv
On Mon, Oct 16, 2023 at 10:42:59PM +1000, Nicholas Piggin wrote:
> This fixes a long-standing latency bug in the powerpc qspinlock
> implementation that quite a few people have reported and helped
> out with debugging.
>
> The first patch is a minimal fix that avoids the problem. The
> other patch
On Fri, Oct 20, 2023 at 3:25 PM Björn Töpel wrote:
>
> Anup Patel writes:
>
> > From: Atish Patra
> >
> > RISC-V SBI specification supports advanced debug console
> > support via SBI DBCN extension.
> >
> > Extend the HVC SBI driver to support it.
> >
> > Signed-off-by: Atish Patra
> > Signed-o
Audio signal processing also has the requirement for memory to
memory similar as Video.
This asrc memory to memory (memory ->asrc->memory) case is a non
real time use case.
User fills the input buffer to the asrc module, after conversion, then asrc
sends back the output buffer to user. So it is n
ASRC can be used on memory to memory case, define several
functions for m2m usage.
m2m_prepare: prepare for the start step
m2m_start: the start step
m2m_unprepare: unprepare for stop step, optional
m2m_stop: stop step
m2m_check_format: check format is supported or not
m2m_calc_out_len: calculate o
ASRC can be used on memory to memory case, define several
functions for m2m usage and export them as function pointer.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
sound/soc/fsl/fsl_easrc.c | 214 ++
sound/soc/fsl/fsl_easrc.h | 4 +
2 files changed
Move fsl_asrc_common.h to include/sound that it can be
included from other drivers.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
{sound/soc/fsl => include/sound}/fsl_asrc_common.h | 0
sound/soc/fsl/fsl_asrc.h | 2 +-
sound/soc/fsl/fsl_asrc_dma.c
Register m2m platform device, that user can
use M2M feature.
Defined platform data structure and platform
driver name.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
include/sound/fsl_asrc_common.h | 23 +++
sound/soc/fsl/fsl_asrc.c| 18 ++
2
Register m2m platform device,that user can
use M2M feature.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
sound/soc/fsl/fsl_easrc.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index 0b9f3df8efc2..07e7475d
V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag.
It is used for audio memory to memory case.
Signed-off-by: Shengjiu Wang
---
Documentation/userspace-api/media/v4l/vidioc-querycap.rst| 3 +++
Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 +
include/uapi/linux/vid
Audio signal processing has the requirement for memory to
memory similar as Video.
This patch is to add this support in v4l2 framework, defined
new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new format v4l2_audio_format
for audio case usage.
The created audio
The audio sample format definition is from alsa,
the header file is include/uapi/sound/asound.h, but
don't include this header file directly, because in
user space, there is another copy in alsa-lib.
There will be conflict in userspace for include
videodev2.h & asound.h and asoundlib.h
Here still
The Audio M2M class includes controls for audio memory-to-memory
use cases. The controls can be used for audio codecs, audio
preprocessing, audio postprocessing.
Signed-off-by: Shengjiu Wang
---
.../userspace-api/media/v4l/common.rst| 1 +
.../media/v4l/ext-ctrls-audio-m2m.rst |
Fixed point controls are used by the user to configure
a fixed point value in 64bits, which Q31.32 format.
Signed-off-by: Shengjiu Wang
---
Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst | 6 ++
.../userspace-api/media/videodev2.h.rst.exceptions | 1 +
drivers/media/v4l
Add V4L2_CID_M2M_AUDIO_SOURCE_RATE and V4L2_CID_M2M_AUDIO_DEST_RATE
new IDs for rate control.
Add V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET and
V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET for clock drift.
Signed-off-by: Shengjiu Wang
---
.../media/v4l/ext-ctrls-audio-m2m.rst | 18 +
Implement the ASRC memory to memory function using
the v4l2 framework, user can use this function with
v4l2 ioctl interface.
User send the output and capture buffer to driver and
driver store the converted data to the capture buffer.
This feature can be shared by ASRC and EASRC drivers
Signed-of
Audio memory to memory virtual driver use video memory to memory
virtual driver vim2m.c as example. The main difference is
device type is VFL_TYPE_AUDIO and device cap type is V4L2_CAP_AUDIO_M2M.
The device_run function is a dummy function, which is simply
copy the data from input buffer to output
Srikar Dronamraju writes:
> * Michael Ellerman [2023-10-19 15:41:40]:
>
>> Srikar Dronamraju writes:
>> > The ability to detect if the system is running in a shared processor
>> > mode is helpful in few more generic cases not just in
>> > paravirtualization.
>> > For example: At boot time, diffe
On Fri, Oct 20, 2023 at 12:51:39PM +0530, Anup Patel wrote:
> From: Atish Patra
>
> RISC-V SBI specification supports advanced debug console
> support via SBI DBCN extension.
>
> Extend the HVC SBI driver to support it.
>
> Signed-off-by: Atish Patra
> Signed-off-by: Anup Patel
> ---
> drive
Hi Kunwu,
Thanks for your patch!
This is not a treewide change. Hence the oneline-summary should be
something prefixed by "[net-next] ps3_gelic"
On Fri, Oct 20, 2023 at 11:32 AM Kunwu Chan wrote:
> reques -> request
>
> Fixes: 09dde54c6a69 ("PS3: gelic: Add wireless support for PS3")
No need f
On Fri, Oct 20, 2023 at 12:51 PM Anup Patel wrote:
>
> The SBI v2.0 specification is now frozen. The SBI v2.0 specification defines
> SBI debug console (DBCN) extension which replaces the legacy SBI v0.1
> functions sbi_console_putchar() and sbi_console_getchar().
> (Refer v2.0-rc5 at https://gith
On Tue, 17 Oct 2023 23:15:27 +1100, Michael Ellerman wrote:
> Sachin reported a warning when running the inject-ra-err selftest:
>
> # selftests: powerpc/mce: inject-ra-err
> Disabling lock debugging due to kernel taint
> MCE: CPU19: machine check (Severe) Real address Load/Store
> (foreig
On Mon, 16 Oct 2023 22:42:59 +1000, Nicholas Piggin wrote:
> This fixes a long-standing latency bug in the powerpc qspinlock
> implementation that quite a few people have reported and helped
> out with debugging.
>
> The first patch is a minimal fix that avoids the problem. The
> other patches are
Srikar Dronamraju writes:
> Currently there are four powerpc specific sched topologies. These are
> all statically defined. However not all these topologies are used by
> all powerpc systems.
>
> To avoid unnecessary degenerations by the scheduler , masks and flags
> are compared. However if the
Hi Vaibhav,
Vaibhav Jain writes:
> This minor patch enables config option GENERIC_IDLE_POLL_SETUP for arch
> powerpc. This should add support for kernel param 'nohlt'.
>
> Powerpc kernel also supports another kernel boot-time param called
> 'powersave' which can also be used to disable all cpu id
* Michael Ellerman [2023-10-20 23:10:55]:
> Srikar Dronamraju writes:
> > Currently there are four powerpc specific sched topologies. These are
> > all statically defined. However not all these topologies are used by
> > all powerpc systems.
> >
> > To avoid unnecessary degenerations by the sc
On Fri, Oct 20, 2023 at 4:16 PM Andrew Jones wrote:
>
> On Fri, Oct 20, 2023 at 12:51:39PM +0530, Anup Patel wrote:
> > From: Atish Patra
> >
> > RISC-V SBI specification supports advanced debug console
> > support via SBI DBCN extension.
> >
> > Extend the HVC SBI driver to support it.
> >
> > S
Most BPF programs are small, but they consume a page each. For systems
with busy traffic and many BPF programs, this may also add significant
pressure on instruction TLB. High iTLB pressure usually slows down the
whole system causing visible performance degradation for production
workloads.
bpf_pr
bpf_arch_text_copy is used to dump JITed binary to RX page, allowing
multiple BPF programs to share the same page. Use the newly introduced
patch_instructions() to implement it.
Signed-off-by: Hari Bathini
Acked-by: Song Liu
---
* No changes in v7.
arch/powerpc/net/bpf_jit_comp.c | 20 ++
powerpc64_jit_data is a misnomer as it is meant for both ppc32 and
ppc64. Rename it to powerpc_jit_data.
Signed-off-by: Hari Bathini
Acked-by: Song Liu
---
* No changes in v7.
arch/powerpc/net/bpf_jit_comp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc
Implement bpf_arch_text_invalidate and use it to fill unused part of
the bpf_prog_pack with trap instructions when a BPF program is freed.
Signed-off-by: Hari Bathini
Acked-by: Song Liu
---
* No changes in v7.
arch/powerpc/net/bpf_jit_comp.c | 15 +++
1 file changed, 15 insertion
Use bpf_jit_binary_pack_alloc in powerpc jit. The jit engine first
writes the program to the rw buffer. When the jit is done, the program
is copied to the final location with bpf_jit_binary_pack_finalize.
With multiple jit_subprogs, bpf_jit_free is called on some subprograms
that haven't got bpf_ji
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, introduce patch_instructions() function
that sets up the pte,
On 19/10/23 11:41 am, Michael Ellerman wrote:
Hari Bathini writes:
Use bpf_jit_binary_pack_alloc in powerpc jit. The jit engine first
writes the program to the rw buffer. When the jit is done, the program
is copied to the final location with bpf_jit_binary_pack_finalize.
With multiple jit_su
On Fri, 2023-10-20 at 10:51 +0200, Juergen Gross wrote:
>
> > (qemu) device_del con1
> > [ 32.050919] [ cut here ]
> > [ 32.050942] Trying to free already-free IRQ 33
> > [ 32.050990] WARNING: CPU: 0 PID: 51 at kernel/irq/manage.c:1895
> > __free_irq+0x1d4/0x330
> >
From: David Woodhouse
The xen_hvc_init() function should always register the frontend driver,
even when there's no primary console — as there may be secondary consoles.
(Qemu can always add secondary consoles, but only the toolstack can add
the primary because it's special.)
Signed-off-by: David
It started out relatively simple, fixing the fact that the secondary
consoles didn't work at *all* due to bugs in the IRQ setup. There were
one or two other simple fixes that I snuck into the same patch in v1.
But it's much more broken than that, so split the fixes out, especially
the last one for
From: David Woodhouse
On unplug of a Xen console, xencons_disconnect_backend() unconditionally
calls free_irq() via unbind_from_irqhandler(), causing a warning of
freeing an already-free IRQ:
(qemu) device_del con1
[ 32.050919] [ cut here ]
[ 32.050942] Trying to free
From: David Woodhouse
The xencons_connect_backend() function allocates a local interdomain
event channel with xenbus_alloc_evtchn(), then calls
bind_interdomain_evtchn_to_irq_lateeoi() to bind to that port# on the
*remote* domain.
That doesn't work very well:
(qemu) device_add xen-console,id=co
On Fri, 20 Oct 2023 17:31:56 +0800 Kunwu Chan wrote:
> reques -> request
>
> Fixes: 09dde54c6a69 ("PS3: gelic: Add wireless support for PS3")
> Signed-off-by: Kunwu Chan
Appears to have been applied to net, thank you!
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