On Thu, 11 Mar 2021 21:08:44 +
Jonathan Cameron wrote:
> On Tue, 9 Mar 2021 23:12:59 +
> Jyoti Bhayana wrote:
>
> > This change provides ARM SCMI Protocol based IIO device.
> > This driver provides support for Accelerometer and Gyroscope using
> > SCMI Sensor Protocol extensions added
On Wed, Mar 10, 2021 at 04:39:53PM -0800, Guru Das Srinagesh wrote:
> If an interrupt is already configured as either edge- or
> level-triggered, setting the corresponding bit for it in the POLARITY_HI
> register further configures it as rising-edge or level-high triggered
> (as the case may be), w
On Fri, Mar 12, 2021 at 10:48:40AM +0100, Miklos Szeredi wrote:
> On Fri, Mar 12, 2021 at 9:51 AM Luis Henriques wrote:
> >
> > Hi Miklos,
> >
> > I've seen a bug report (5.10.16 kernel splat below) that seems to be
> > reproducible in kernels as early as 5.4.
> >
> > The commit that caught my att
On Wed, Mar 03, 2021 at 04:26:30PM -0800, paul...@kernel.org wrote:
> From: "Paul E. McKenney"
>
> There is a need for a non-blocking polling interface for RCU grace
> periods, so this commit supplies start_poll_synchronize_rcu() and
> poll_state_synchronize_rcu() for this purpose. Note that the
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f78d76e72a4671ea52d12752d92077788b4f5d50
commit: b13812ddea615b6507beef24f76540c0c1143c5c MIPS: Loongson2ef: Disable
Loongson MMI instructions
date: 6 months ago
config: mips-randconfig-r004-20210312
Resending this as I realized that alsa-devel list was missing in cc!
In some cases, SoundWire device ports are statically mapped to Controller
ports during design, however there is no way to expose this information
to the controller. Controllers like Qualcomm ones use this info to setup
static ban
SoundWire device ports are statically mapped to Controller ports during
design. Add support to read these from SoundWire devices.
This controller uses static port map info to setup bandwidth
parameters for those ports.
A generic port allocation is not possible in this cases!
Signed-off-by: Sriniv
WSA881x SoundWire device ports are statically assigned to master ports
at design time. So add bindings required to specify these mappings!
Signed-off-by: Srinivas Kandagatla
---
.../devicetree/bindings/sound/qcom,wsa881x.yaml | 9 +
1 file changed, 9 insertions(+)
diff --git a/
Some of the SoundWire device ports are statically mapped to Controller
ports during design, however there is no way to expose this information
to the controller. Controllers like Qualcomm ones use this info to setup
static bandwith parameters for those ports.
A generic port allocation is not possi
Two instances of WSA881x(Speaker Right, Speaker Left) ports
are statically mapped to master ports. Allow the driver to parse
those mappings from device tree.
Signed-off-by: Srinivas Kandagatla
---
sound/soc/codecs/wsa881x.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/sound/soc/cod
currently the internal bitmask used for allocating ports starts with offset 0.
This is bit confusing as data port numbers on Qualcomm controller are valid
from 1 to 14. So adjust this bit mask accordingly, this will also help while
adding static port map support.
Signed-off-by: Srinivas Kandagatla
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When unbinding the firmware device we need to make sure it has no
consumers left. Otherwise we'd leave them with a firmware handle
pointing at freed memory.
Keep a reference count of all consumers and introduce rpi_firmware_put()
which will permit automatically decrease the reference count upon
un
The aim of this series is to add support to the fan found on RPi's PoE
HAT. Some commentary on the design can be found below. But the important
part to the people CC'd here not involved with PWM is that, in order to
achieve this properly, we also have to fix the firmware interface the
driver uses t
Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
Reviewed-by: Greg Kroah-Hartman
---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 2 +-
1 file cha
Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
Acked-by: Stephen Boyd
drivers/clk/bcm/clk-raspberrypi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
It'll simplify the firmware handling for most consumers.
Suggested-by: Bartosz Golaszewski
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
Reviewed-by: Bartosz Golaszewski
---
Changes since v4:
- Rearrange function calls for clarity, same functionality
Changes since v2:
There is no use for the firmware interface after getting the touch
buffer address, so release it.
Signed-off-by: Nicolas Saenz Julienne
Acked-by: Dmitry Torokhov
Reviewed-by: Florian Fainelli
---
Changes since v5:
- Correct commit message
Changes since v3:
- Release firmware handle in probe
Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
---
drivers/reset/reset-raspberrypi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/res
Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
Acked-by: Bartosz Golaszewski
---
drivers/gpio/gpio-raspberrypi-exp.c | 2 +-
1 file changed, 1 insertion(+), 1 dele
Use devm_rpi_firmware_get() so as to make sure we release RPi's firmware
interface when unbinding the device.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Florian Fainelli
---
drivers/soc/bcm/raspberrypi-power.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/s
Adds support to control the PWM bus available in official Raspberry Pi
PoE HAT. Only RPi's co-processor has access to it, so commands have to
be sent through RPi's firmware mailbox interface.
Signed-off-by: Nicolas Saenz Julienne
---
Changes since v7:
- Remove unwarranted RPI_PWM_DEF_DUTY_REG
This is an example on how to enable the fan on top of RPi's official PoE
hat.
Signed-off-by: Nicolas Saenz Julienne
---
arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 54 +++
1 file changed, 54 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
b/arch/arm/boot/dt
The PWM bus controlling the fan in RPi's official PoE hat can only be
controlled by the board's co-processor.
Signed-off-by: Nicolas Saenz Julienne
Reviewed-by: Rob Herring
---
Changes since v4:
- Rename compatible string to be more explicit with the bus' limitations
Changes since v3:
- Fix e
Adjust the rss_stat tracepoint to print the name of the resident page type
that got updated (e.g. MM_ANONPAGES/MM_FILEPAGES), rather than the numeric
index corresponding to it (the __entry->member value):
Before this patch:
--
rss_stat: mm_id=1216113068 curr=0 member=1 size=28672B
From: Daeho Jeong
I've added new sysfs nodes to show runtime compression stat since mount.
compr_written_block - show the block count written after compression
compr_saved_block - show the saved block count with compression
compr_new_inode - show the count of inode newly enabled for compression
On Wed, Mar 03, 2021 at 04:26:30PM -0800, paul...@kernel.org wrote:
> /**
> + * start_poll_state_synchronize_rcu - Snapshot and start RCU grace period
> + *
> + * Returns a cookie that is used by a later call to cond_synchronize_rcu()
> + * or poll_state_synchronize_rcu() to determine whether or n
Hallo Liebes, bitte hoffe du hast meine Nachricht bekommen
Ich brauche dringend eine Antwort
Vielen Dank
Michelle
Am 2021-03-12 13:04, schrieb Mark Brown:
On Fri, Mar 12, 2021 at 01:01:41PM +0100, Michael Walle wrote:
Am 2021-03-12 12:35, schrieb Mark Brown:
> If the card has a clock API clock as sysclk then set_sysclk(() should
> be configuring that clock.
What do you mean by "the card". The simple-a
On 2021/3/12 20:02, Marc Zyngier wrote:
> On Fri, 12 Mar 2021 11:34:07 +,
> Shenming Lu wrote:
>>
>> On 2021/3/12 19:10, Marc Zyngier wrote:
>>> On Fri, 12 Mar 2021 10:48:29 +,
>>> Shenming Lu wrote:
On 2021/3/12 17:05, Marc Zyngier wrote:
> On Thu, 11 Mar 2021 12:32:07 +000
Hi Jean,
On 3/3/21 10:44 PM, Jean-Philippe Brucker wrote:
On Fri, Jan 15, 2021 at 05:43:31PM +0530, Vivek Gautam wrote:
Update base address information in vendor pasid table info to pass that
to user-space for stage1 table management.
Signed-off-by: Vivek Gautam
Cc: Joerg Roedel
Cc: Will Dea
On Fri, Mar 12, 2021 at 1:59 PM Mark Brown wrote:
>
> On Fri, Mar 12, 2021 at 12:59:29PM +0200, Daniel Baluta wrote:
> > On Fri, Mar 12, 2021 at 12:50 PM Mark Brown wrote:
>
> > > If an explicit name has been provided why would we override it with an
> > > autogenerated one?
>
> > Wait, are you a
From: Joerg Roedel
A malicious hypervisor could disable the CPUID intercept for an SEV or
SEV-ES guest and trick it into the no-SEV boot path, where it could
potentially reveal secrets. This is not an issue for SEV-SNP guests,
as the CPUID intercept can't be disabled for those.
Remove the Hyperv
From: Joerg Roedel
Hi,
these patches add support for the 32-bit boot in the decompressor
code. This is needed to boot an SEV-ES guest on some firmware and grub
versions. The patches also add the necessary CPUID sanity checks and a
32-bit version of the C-bit check.
Other updates included here:
From: Joerg Roedel
The 32-bit #VC handler has no GHCB and can only handle CPUID exit codes.
It is needed by the early boot code to handle #VC exceptions raised in
verify_cpu() and to get the position of the C bit.
But the CPUID information comes from the hypervisor, which is untrusted
and might
From: Joerg Roedel
Add a #VC exception handler which is used when the kernel still executes
in protected mode. This boot-path already uses CPUID, which will cause #VC
exceptions in an SEV-ES guest.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/head_64.S | 6 ++
arch/x86/boot/co
From: Joerg Roedel
This boot path needs exception handling when it is used with SEV-ES.
Setup an IDT and provide a helper function to write IDT entries for
use in 32-bit protected mode.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/head_64.S | 72 ++
1 fi
From: Joerg Roedel
Exception handling in the startup_32 boot path requires the CS
selector to be correctly set up. Reload it from the current GDT.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/head_64.S | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch
From: Joerg Roedel
Check whether the hypervisor reported the correct C-bit when running as
an SEV guest. Using a wrong C-bit position could be used to leak
sensitive data from the guest to the hypervisor.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/head_64.S | 83 +
From: Joerg Roedel
Disable the exception handling before booting the kernel to make sure
any exceptions that happen during early kernel boot are not directed to
the pre-decompression code.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/idt_64.c | 14 ++
arch/x86/boot/comp
From: Joerg Roedel
There are a few places left in the SEV-ES C code where hlt loops and/or
terminate requests are implemented. Replace them all with calls to
sev_es_terminate().
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/sev-es.c | 12 +++-
arch/x86/kernel/sev-es-shared.c
On Fri, Mar 12, 2021 at 09:25:31PM +0900, Daeho Jeong wrote:
> From: Daeho Jeong
>
> I've added new sysfs nodes to show runtime compression stat since mount.
> compr_written_block - show the block count written after compression
> compr_saved_block - show the saved block count with compression
>
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From: Susan Console
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Sir/Madam,
CONGRATULATIONS!!!
We are pleased to inform you of the result of the Lotto NL Winners
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On Wed, Mar 10, 2021 at 10:46:15AM +, Mel Gorman wrote:
> +int __alloc_pages_bulk_nodemask(gfp_t gfp_mask, int preferred_nid,
> + nodemask_t *nodemask, int nr_pages,
> + struct list_head *list);
For the next revision, can you ditch the '_
Partitions that contains the nvmem-cells compatible will register
their direct subonodes as nvmem cells and the node will be treated as a
nvmem provider.
Signed-off-by: Ansuel Smith
Tested-by: Rafał Miłecki
---
drivers/mtd/mtdcore.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff
Drop $nodename restriction as now mtd partition can also be used as
nvmem provider.
Signed-off-by: Ansuel Smith
---
Documentation/devicetree/bindings/nvmem/nvmem.yaml | 3 ---
1 file changed, 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.yaml
b/Documentation/devicet
Document nvmem-cells compatible used to treat mtd partitions as a
nvmem provider.
Signed-off-by: Ansuel Smith
Reviewed-by: Rob Herring
---
.../bindings/mtd/partitions/nvmem-cells.yaml | 99 +++
1 file changed, 99 insertions(+)
create mode 100644
Documentation/devicetree/bindi
On Thu, Mar 11, 2021 at 1:26 PM Colin Ian King wrote:
> On 11/03/2021 11:16, Michal Simek wrote:
> > On 3/11/21 11:57 AM, Colin Ian King wrote:
> >> For the PIN_MAP_TYPE_CONFIGS_PIN and PIN_MAP_TYPE_CONFIGS_GROUP
> >> setting->type cases the loop can break out with ret not being set. Since
> >> r
On Mon, Mar 08, 2021 at 04:01:09PM +0800, Yang Weijiang wrote:
Hi, Sean,
Any comments for below change?
> On Thu, Mar 04, 2021 at 08:46:45AM -0800, Sean Christopherson wrote:
> > On Thu, Mar 04, 2021, Yang Weijiang wrote:
> > > @@ -3375,6 +3391,12 @@ enum nvmx_vmentry_status
> > > nested_vmx_ent
Fixes v4l2-compliance:
Format ioctls (Input 0):
warn: v4l2-test-formats.cpp(1339): S_PARM is supported but
doesn't report V4L2_CAP_TIMEPERFRAME
fail: v4l2-test-formats.cpp(1241): node->has_frmintervals &&
!cap->capability
Reviewed-by: Laurent Pinchart
Reviewed-b
Drivers that do not use the ctrl-framework use this function instead.
- Return error when handling of REQUEST_VAL.
- Do not check for multiple classes when getting the DEF_VAL.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(813): doioctl(node,
VIDIO
From: Hans Verkuil
When uvc was written the vb2 ioctl and file operation helpers didn't exist.
This patch switches uvc over to those helpers, which removes a lot of
boilerplate
code and simplifies VIDIOC_G/S_PRIORITY handling and allows us to drop the
'privileges' scheme, since that's now handl
If an error is found when validating the list of controls passed with
VIDIOC_G_EXT_CTRLS, then error_idx shall be set to ctrls->count to
indicate
to userspace that no actual hardware was touched.
It would have been much nicer of course if error_idx could point to the
control index that failed the
All the entities must have a unique name. And now that we are at it, we
append the entity->id to the name to avoid collisions on multi-chain
devices.
Fixes v4l2-compliance:
Media Controller ioctls:
fail: v4l2-test-media.cpp(205): v2_entity_names_set.find(key)
!= v2_entity_names_se
Create all the class controls for the device defined controls.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(216): missing control class for
class 0098
fail: v4l2-test-controls.cpp(216): missing control tclass for
class 009a
Hi Jean,
On 3/3/21 10:41 PM, Jean-Philippe Brucker wrote:
Hi Vivek,
Thanks again for working on this. I have a few comments but it looks
sensible overall.
Thanks a lot for reviewing the patch-series. Please find my responses
inline below.
Regarding the overall design, I was initially as
On 12/03/2021 12:45, Andy Shevchenko wrote:
> On Thu, Mar 11, 2021 at 1:26 PM Colin Ian King
> wrote:
>> On 11/03/2021 11:16, Michal Simek wrote:
>>> On 3/11/21 11:57 AM, Colin Ian King wrote:
>
For the PIN_MAP_TYPE_CONFIGS_PIN and PIN_MAP_TYPE_CONFIGS_GROUP
setting->type cases the loo
The device is doing something unspected with the control. Either because
the protocol is not properly implemented or there has been a HW error.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(448): s_ctrl returned an error (22)
test VIDIOC_G/S
Pass the chain instead of the device. We want to keed the reference to
the chain that controls belong to.
We need to delay the initialization of the controls after the chains
have been initialized.
This is a cleanup needed for the next patches.
Signed-off-by: Ricardo Ribalda
---
drivers/media/
In my computer I am getting this output for
v4l2-compliance -m /dev/media0 -a -f
Total for uvcvideo device /dev/media0: 8, Succeeded: 6, Failed: 2, Warnings: 0
Total for uvcvideo device /dev/video0: 54, Succeeded: 50, Failed: 4, Warnings: 2
Total for uvcvideo device /dev/video1: 46, Succeeded: 46,
On 3/3/21 10:45 PM, Jean-Philippe Brucker wrote:
On Fri, Jan 15, 2021 at 05:43:32PM +0530, Vivek Gautam wrote:
Te change allows different consumers of arm-smmu-v3-cd-lib to set
their respective sync op for pasid entries.
Signed-off-by: Vivek Gautam
Cc: Joerg Roedel
Cc: Will Deacon
Cc: Rob
unrecoverable_exception() is never expected to return, most callers
have an infiniteloop in case it returns.
Ensure it really never returns by terminating it with a BUG(), and
declare it __no_return.
It always GCC to really simplify functions calling it. In the exemple
below, it avoids the stack
In order to be able to switch MMU on in exception prolog, save
SRR0 and SRR1 earlier.
Also save r10 and r11 into stack earlier to better match with the
normal exception prolog.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 9 -
arch/powerpc/kernel/head_40x.S | 8 +
SPRN_SPRG_SCRATCH5 is used to save SPRN_PID.
SPRN_SPRG_SCRATCH6 is already available.
SPRN_PID is only 8 bits. We have r12 that contains CR.
We only need to preserve CR0, so we have space available in r12
to save PID.
Keep PID in r12 and free up SPRN_SPRG_SCRATCH5.
Then In TLB miss handlers, ins
In order to ease preparation for CONFIG_VMAP_STACK, reorder
a few instruction, especially save r1 into stack frame earlier.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_40x.S | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/head_40x.
In order the enable MMU early in exception prolog, implement
CONFIG_VMAP_STACK principles in critical exception prolog.
There is no intention to use CONFIG_VMAP_STACK on 40x,
but related code will be used to enable MMU early in exception
in a later patch.
Also address (critirq_ctx - PAGE_OFFSET)
Ensure normal exception handler are able to manage stuff with
MMU enabled. For that we use CONFIG_VMAP_STACK related code
allthough there is no intention to really activate CONFIG_VMAP_STACK
on powerpc 40x for the moment.
40x uses SPRN_DEAR instead of SPRN_DAR and SPRN_ESR instead of
SPRN_DSISR. T
There is no need for this to be in asm anymore,
use the new interrupt entry wrapper.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 4 ++
arch/powerpc/kernel/entry_32.S | 58
2 files changed, 4 insertions(+), 58 deletions(-)
diff -
8xx has registers SPRN_NRI, SPRN_EID and SPRN_EIE for changing
MSR EE and RI.
Use SPRN_EID in exception prolog to set RI.
On an 8xx, it reduces the null_syscall test by 3 cycles.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h | 2 ++
1 file changed, 2 insertions(+)
diff --g
The handling of SPRN_DBCR0 and other registers can easily
be done in C instead of ASM.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 2 ++
arch/powerpc/kernel/entry_32.S | 23 ---
2 files changed, 2 insertions(+), 23 deletions(-)
diff --gi
On 40x and 8xx, kernel text is pinned.
On book3s/32, kernel text is mapped by BATs.
Enable instruction translation at the same time as data translation, it
makes things simpler.
In syscall handler, MSR_RI can also be set at the same time because
srr0/srr1 are already saved and r1 is set properly.
ksp_limit is there to help detect stack overflows.
That is specific to ppc32 as it was removed from ppc64 in
commit cbc9565ee826 ("powerpc: Remove ksp_limit on ppc64").
There are other means for detecting stack overflows.
As ppc64 has proven to not need it, ppc32 should be able to do
without it t
Change CRITICAL_EXCEPTION_PROLOG macro to a gas macro to
remove the ugly ; and \ on each line.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_40x.S | 71 +-
1 file changed, 36 insertions(+), 35 deletions(-)
diff --git a/arch/powerpc/kernel/head_40x.
Everywhere where it is possible, use START_EXCEPTION().
This will help for proper exception init in future patches.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_40x.S | 12 +--
arch/powerpc/kernel/head_8xx.S | 27 +
arch/powerpc/kernel
The space in the head section is rather constrained by the fact that
exception vectors are spread every 0x100 bytes and sometimes we
need to have "out of line" code because it doesn't fit.
Now that we are enabling MMU early in the prolog, take that opportunity
to jump somewhere else in the .text s
Now that the prolog continuation is separated in .text, give it a name
and mark it _ASM_NOKPROBE_SYMBOL.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h| 12 +++-
arch/powerpc/kernel/head_40x.S | 22 --
arch/powerpc/kernel/head_8xx.S
Refactor booke critical registers saving into a few macros
and move it into the exception prolog directly.
Keep the dedicated transfert_to_handler entry point for the
moment allthough they are empty. They will be removed in a
later patch to reduce churn.
Signed-off-by: Christophe Leroy
---
arch
The check of the emergency context initialisation in
vmap_stack_overflow is buggy for the SMP case, as it
compares r1 with 0 while in the SMP case r1 is offseted
by the CPU id.
Instead of fixing it, just perform static initialisation
of the first emergency context.
Signed-off-by: Christophe Leroy
If the code can use a stack in vm area, it can also use a
stack in linear space.
Simplify code by removing old non VMAP stack code on PPC32.
That means the data translation is now re-enabled early in
exception prolog in all cases, not only when using VMAP stacks.
While we are touching EXCEPTION_
This series aims at porting interrupt entry/exit in C on PPC32, using
the work already merged for PPC64.
First patch is an optimisation around unrecoverable_exception() function.
Six following patches do minimal changes in 40x in order to be able to enable
MMU
earlier in exception entry.
Second
There is no need for this to be in asm,
use the new interrupt entry wrapper.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 3 +++
arch/powerpc/include/asm/ppc_asm.h | 10 --
arch/powerpc/kernel/entry_32.S | 1 -
3 files changed, 3 insertions(+), 11
Now that the MMU is re-enabled before calling the transfer function,
we don't need anymore that hack with the address of the handler and
the return function sitting just after the 'bl' to the transfer
fonction, that function is retrieving via a read relative to 'lr'.
Do a regular call to the trans
8xx requires to tag the DAR with a magic value in order to
fixup DAR on faults generated by 'dcbX', as the 8xx
forgets to update the DAR for those faults.
Do the tagging as early as possible, that is before enabling MMU.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h | 6 ++
For consistency, add in the macro the label used by exception prolog
to branch to stack overflow processing.
While at it, enclose the macro in #ifdef CONFIG_VMAP_STACK on the 8xx
as already done on book3s/32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h| 3 ++-
arch
In preparation of handling exception entry and exit in C,
in order to simplify the handling, always save non volatile registers
when entering an exception.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/ptrace.h | 6 ++
arch/powerpc/kernel/entry_32.S| 13 +
arc
This patch replaces the PPC32 ASM exception exit by C exception exit.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 436 +---
arch/powerpc/kernel/interrupt.c | 6 +-
2 files changed, 123 insertions(+), 319 deletions(-)
diff --git a/arch/powe
Now that non volatile registers are saved at all time, no
need to split bad_page_fault() out of do_page_fault().
Remove handle_page_fault() and use do_page_fault() directly.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 16
arch/powerpc/kernel/head_
All exception handlers take regs as first parameter.
Instead of setting r3 just before each call to a handler, set
it in transfer_to_handler.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 3 +--
arch/powerpc/kernel/head_32.h| 2 --
arch/powerpc/kernel/head
Saving the trap number into the stack goes into
the exception prolog, as EXC_XFER_xxx will soon disappear.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h| 14 -
arch/powerpc/kernel/head_40x.S | 22 +++---
arch/powerpc/kernel/head_8xx.S | 14
In order to increase flexibility, add a macro that will for now
call transfer_to_handler.
As transfer_to_handler doesn't do the actual transfer anymore,
also name it prepare_transfer_to_handler. The following patches
will progressively remove the use of transfer_to_handler label.
Signed-off-by: C
Exception prologs all do the same at the end:
- Save trapno in stack
- Mark stack with exception marker
- Save r0
- Save r3 to r8
Refactor that into a COMMON_EXCEPTION_PROLOG_END macro.
At the same time use r1 instead of r11.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h
Since commit 06d67d54741a ("powerpc: make process.c suitable for both
32-bit and 64-bit"), thread.regs is set on task creation, no need to
set it again and again at each interrupt entry as it never change.
Suggested-by: Nicholas Piggin
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/ent
The xfer parameter is not used anymore, remove it.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/head_32.h| 2 +-
arch/powerpc/kernel/head_40x.S | 42
arch/powerpc/kernel/head_44x.S | 10 ++--
arch/powerpc/kernel/head_8xx.S | 14 +++---
arch/
Save non volatile registers, XER, CTR, MSR and NIP in exception prolog.
Also assign proper value to r2 and r3 there.
For now, recalculate thread pointer in prepare_transfer_to_handler.
It will disappear once KUAP is ported to C.
And remove the comment which is now completely wrong.
Signed-off-b
transfer_to_handler_cont: is now just a blr.
Directly perform blr in power_save_ppc32_restore().
Also remove useless setting of r11 in e500 version of
power_save_ppc32_restore().
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 3 ---
arch/powerpc/kernel/idle_6xx.S | 2
Only book3s/32 and e500 have significative work to do in
prepare_transfer_to_handler.
Other 32 bit have nothing to do at all.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/entry_32.S | 6 ++
arch/powerpc/kernel/head_32.h| 2 ++
arch/powerpc/kernel/head_booke.h | 2 ++
3 file
In order to get more control in exception prolog, dismantle
all non standard exception macros, finishing with EXC_XFER_STD
and EXC_XFER_LITE and EXC_XFER_TEMPLATE.
Also remove transfer_to_handler_full and ret_from_except and
ret_from_except_full as they are not used anymore.
Last parameter of EXC
Until now, non volatile registers were restored everytime they
were saved, ie using EXC_XFER_STD meant saving and restoring
them while EXC_XFER_LITE meant neither saving not restoring them.
Now that they are always saved, EXC_XFER_STD means to restore
them and EXC_XFER_LITE means to not restore th
On Thu, Mar 11, 2021 at 5:23 PM 周琰杰 (Zhou Yanjie)
wrote:
>
> Add support for probing the pinctrl-ingenic driver on the JZ4730 SoC,
> the JZ4750 SoC, the JZ4755 SoC, the JZ4775 SoC and the X2000 SoC from
> Ingenic.
>
> The driver of JZ4730 is derived from Paul Boddie. It is worth noting
> that the
In preparation of porting powerpc32 to C syscall entry/exit,
rename kuap_check_amr() and kuap_get_and_check_amr() as
kuap_assert_locked() and kuap_get_and_assert_locked(), and move in the
generic asm/kup.h the stub for when CONFIG_PPC_KUAP is not selected.
Signed-off-by: Christophe Leroy
Reviewed
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