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)
On Thu, Jan 21, 2021 at 11:06 AM Wolfram Sang
wrote:
> Signed-off-by: Wolfram Sang
> ---
>
> Change since v1:
> * use S3D2 as parent clock
Reviewed-by: Geert Uytterhoeven
i.e. will queue in renesas-clk-for-v5.12.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven --
(1) During running time of a a VM with numbers of vCPUs, if some vCPUs
access the same GPA almost at the same time and the stage-2 mapping of
the GPA has not been built yet, as a result they will all cause
translation faults. The first vCPU builds the mapping, and the followed
ones end up updating
Quoting Pan Bian (2021-01-22 01:56:40)
> Object out is not released on path that no VMA instance found. The root
> cause is jumping to an unexpected label on the error path.
Wouldn't the root cause be whatever caused the allocation to fail?
Language notwithstanding,
Reviewed-by: Chris Wilson
Hi Maxime
Sorry for the slow reply on these patches.
On Mon, 11 Jan 2021 at 14:23, Maxime Ripard wrote:
>
> From: Dom Cobley
>
> Currently we call cec_phys_addr_invalidate on a hotplug deassert.
> That may be due to a TV power cycling, or an AVR being switched
> on (and switching edid).
>
>
Hi Wolfram,
On Thu, Jan 21, 2021 at 11:06 AM Wolfram Sang
wrote:
> PHYs on the subboard could not be reached via remote access. But this is
> the latest DTS snipplet with some fixes suggested by Geert as a starting
> point. Not for upstream yet!
>
> Signed-off-by: Wolfram Sang
> ---
> Change
On 22.01.21 11:42, David Hildenbrand wrote:
> On 22.01.21 11:41, Anshuman Khandual wrote:
>>
>> On 1/22/21 2:48 PM, David Hildenbrand wrote:
>>>
+/*
+ * Platforms should define arch_get_mappable_range() that provides
+ * maximum possible addressable physical memory range for which
v3:
- Populate bitmap unconditionally.
- Sanity check notifier when remove all domains.
v2:
- Address suggestions from Alex.
- Remove unnecessary patches.
Keqian Zhu (2):
vfio/iommu_type1: Populate full dirty when detach non-pinned group
vfio/iommu_type1: Fix some sanity checks in
From: Shuo Liu
ACRN userspace need to inject virtual interrupts into a User VM in
devices emulation.
HSM needs provide interfaces to do so.
Introduce following interrupt injection interfaces:
ioctl ACRN_IOCTL_SET_IRQLINE:
Pass data from userspace to the hypervisor, and inform the hypervisor
Currently kdb uses in_interrupt() to determine whether its library
code has been called from the kgdb trap handler or from a saner calling
context such as driver init. This approach is broken because
in_interrupt() alone isn't able to determine kgdb trap handler entry from
normal task context.
Hi,
On 22.01.21 11:23, Fabrice Gasnier wrote:
> On 1/21/21 7:02 PM, Ahmad Fatoum wrote:
>> For non-DMA usage, we have an easy way to associate a timestamp with a
>> sample: iio_pollfunc_store_time stores a timestamp in the primary
>> trigger IRQ handler and stm32_adc_trigger_handler runs in the
From: Shuo Liu
The HSM provides hypervisor services to the ACRN userspace. While
launching a User VM, ACRN userspace needs to allocate memory and request
the ACRN Hypervisor to set up the EPT mapping for the VM.
A mapping cache is introduced for accelerating the translation between
the Service
From: Jiri Kosina
This issue was originally fixed in 09954bad4 ("floppy: refactor open()
flags handling").
The fix as a side-effect, however, introduce issue for open(O_ACCMODE)
that is being used for ioctl-only open. I wrote a fix for that, but
instead of it being merged, full revert of
The MT6359P is a eco version for MT6359 regulator.
We add support based on MT6359 regulator driver.
Signed-off-by: Hsin-Hsiung Wang
---
changes since v4:
- add the regulators_node support.
---
drivers/regulator/mt6359-regulator.c | 379 -
This patch adds RTC_TC_MTH_MASK to support new chips.
Signed-off-by: Yuchen Huang
Signed-off-by: Hsin-Hsiung Wang
Acked-by: Alexandre Belloni
---
changes since v4: no changes
---
drivers/rtc/rtc-mt6397.c | 2 +-
include/linux/mfd/mt6397/rtc.h | 1 +
2 files changed, 2 insertions(+), 1
This adds compatible for the MediaTek MT6359 PMIC.
Signed-off-by: Hsin-Hsiung Wang
---
changes since v4:
- remove unused compatible name.
---
Documentation/devicetree/bindings/mfd/mt6397.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/mfd/mt6397.txt
On Thu, 21 Jan 2021 10:15:46 -0800
Ben Widawsky wrote:
> On 21-01-14 17:10:38, Jonathan Cameron wrote:
> > On Mon, 11 Jan 2021 14:51:14 -0800
> > Ben Widawsky wrote:
> >
> > > The send command allows userspace to issue mailbox commands directly to
> > > the hardware. The driver will verify
On Wed, Dec 23, 2020 at 07:57:02AM -0800, Chang S. Bae wrote:
> The xstate buffer is currently in-line with static size. To accommodatea
"in-line" doesn't fit in this context, especially since "inline"
is a keyword with another meaning. Please replace it with a better
formulation in this patch.
I couldn't find any user of the dubious vpe_getcwd so far. So remove it and
get rid of another set_fs(KERNEL_DS).
Signed-off-by: Thomas Bogendoerfer
---
arch/mips/include/asm/vpe.h | 3 ---
arch/mips/kernel/vpe.c | 33 -
2 files changed, 36 deletions(-)
On Fri, Jan 22, 2021 at 7:51 PM Viresh Kumar wrote:
>
> Add support for building DT overlays (%.dtbo). The overlay's source file
> will have the usual extension, i.e. .dts, though the blob will have
> .dtbo extension to distinguish it from normal blobs.
>
> Signed-off-by: Viresh Kumar
> ---
> -Original Message-
> From: Dietmar Eggemann [mailto:dietmar.eggem...@arm.com]
> Sent: Friday, January 22, 2021 11:05 PM
> To: Song Bao Hua (Barry Song) ; Valentin Schneider
> ; Meelis Roos ; LKML
>
> Cc: Peter Zijlstra ; Vincent Guittot
> ; Mel Gorman
> Subject: Re: 5.11-rc4+git:
I was hitting the below panic continuously when attaching kprobes to
scheduler functions
[ 159.045212] Unexpected kernel BRK exception at EL1
[ 159.053753] Internal error: BRK handler: f206 [#1] PREEMPT SMP
[ 159.059954] Modules linked in:
[ 159.063025]
From: Shuo Liu
The ACRN Hypervisor builds an I/O request when a trapped I/O access
happens in User VM. Then, ACRN Hypervisor issues an upcall by sending
a notification interrupt to the Service VM. HSM in the Service VM needs
to hook the notification interrupt to handle I/O requests.
From: Yin Fengwei
ACRN Hypervisor reports hypervisor features via CPUID leaf 0x4001
which is similar to KVM. A VM can check if it's the privileged VM using
the feature bits. The Service VM is the only privileged VM by design.
Signed-off-by: Yin Fengwei
Signed-off-by: Shuo Liu
Reviewed-by:
On Fri, Jan 22, 2021 at 01:40:54PM +0200, Andy Shevchenko wrote:
> Intel Moorestown and Medfield are quite old Intel Atom based
> 32-bit platforms, which were in limited use in some Android phones,
> tablets and consumer electronics more than eight years ago.
>
> There are no bugs or problems
The phy may be named as pcie-phy when the T-PHY only supports
PCIe mode, it's also the similar case for SATA, named as
sata-phy.
Signed-off-by: Chunfeng Yun
---
v2: no changes
---
Documentation/devicetree/bindings/phy/mediatek,tphy.yaml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Fix warning: "too many spaces inside brackets"
Signed-off-by: Chunfeng Yun
---
v2: no changes
---
.../devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 2 +-
Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml| 6 +++---
Documentation/devicetree/bindings/usb/mediatek,musb.yaml
On Thu, Jan 21, 2021 at 06:59:37PM +, Robin Murphy wrote:
> On 2021-01-21 17:46, Will Deacon wrote:
> > On Thu, Jan 21, 2021 at 10:21:50PM +0530, Prathu Baronia wrote:
> > > This patch removes the unnecessary kmap calls in the hugepage zeroing
> > > path and
> > > improves the timing by 62%.
Hello,
syzbot found the following issue on:
HEAD commit:226871e2 Add linux-next specific files for 20210122
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1076afe750
kernel config: https://syzkaller.appspot.com/x/.config?x=40930d62519ae2bd
dashboard
On Tue, Nov 24, 2020 at 12:15:58PM -0700, Jordan Crouse wrote:
> Call report_iommu_fault() to allow upper-level drivers to register their
> own fault handlers.
>
> Signed-off-by: Jordan Crouse
> ---
>
> drivers/iommu/arm/arm-smmu/arm-smmu.c | 16 +---
> 1 file changed, 13
On Fri, Jan 22, 2021 at 01:23:44PM +0100, Hans de Goede wrote:
> On 1/22/21 12:26 PM, Charles Keepax wrote:
> > On Thu, Jan 21, 2021 at 05:55:00PM +0100, Hans de Goede wrote:
> >> On 1/19/21 10:51 AM, Richard Fitzgerald wrote:
> >>> On 18/01/2021 17:24, Andy Shevchenko wrote:
> On Sun, Jan
On Thu, Jan 21, 2021 at 8:43 PM Saravana Kannan wrote:
> > They may still have "ports" or "banks" of GPIO that make sense
> > to separate into logical nodes and this is most often why they
> > do this.
> >
> > I bet there are some other oddities as well.
>
> Ah, thanks for the context. But
Hi Mathieu,
On 1/22/21 12:52 AM, Mathieu Poirier wrote:
> On Tue, Dec 22, 2020 at 11:57:14AM +0100, Arnaud Pouliquen wrote:
>> Implement the ioctl function that parses the list of
>> rpmsg drivers registered to create an associated device.
>> To be ISO user API, in a first step, the
On Thu, Jan 21, 2021 at 7:19 PM Vlastimil Babka wrote:
> On 1/21/21 11:01 AM, Christoph Lameter wrote:
> > On Thu, 21 Jan 2021, Bharata B Rao wrote:
> >
> >> > The problem is that calculate_order() is called a number of times
> >> > before secondaries CPUs are booted and it returns 1 instead of
Hi Michael,
> -Original Message-
> From: Michael Grzeschik
> Sent: Friday, January 22, 2021 1:39 PM
> To: Manish Narani
> Cc: devicet...@vger.kernel.org; ker...@pengutronix.de; ba...@kernel.org;
> gre...@linuxfoundation.org; linux-...@vger.kernel.org; Michal Simek
> ;
On Wed, 20 Jan 2021 at 08:39, Jiapeng Zhong
wrote:
>
> Fix the following coccicheck warnings:
>
> ./drivers/mmc/host/atmel-mci.c:2436:2-34: WARNING: Assignment
> of 0/1 to bool variable.
>
> ./drivers/mmc/host/atmel-mci.c:2425:2-20: WARNING: Assignment
> of 0/1 to bool variable.
>
> Reported-by:
Takashi Iwai wrote:
> You seem hitting a firmware bug, and it doesn't look like the only
> case. Interestingly, the backport of 5.11 USB-audio stuff on 5.3
> kernel on openSUSE Leap 15.2 caused a similar bug on Steinberg device,
> while it worked with 5.11-rc. So I thought this specific with the
On Fri, Jan 22, 2021 at 12:07 AM Masahiro Yamada wrote:
> On Fri, Jan 22, 2021 at 5:35 AM Andy Shevchenko
> wrote:
> > On Thu, Jan 21, 2021 at 10:31 PM Andy Shevchenko
> > wrote:
...
> > For the record, you seems haven't noticed:
> > https://lkml.org/lkml/2020/12/9/446
>
>
> Ohh, I missed it.
coccicheck suggested using PTR_ERR_OR_ZERO() and looking at the code.
Fix the following coccicheck warnings:
./net/bridge/br_multicast.c:1295:7-13: WARNING: PTR_ERR_OR_ZERO can be
used.
Reported-by: Abaci
Signed-off-by: Jiapeng Zhong
---
net/bridge/br_multicast.c | 2 +-
1 file changed, 1
changes v2:
- add commas
- avoid possible unhandled interrupts in the enable path
- do not use of_ specific gpio functions
Add support for GPIO based pulse counter. For now it can only count
pulses. With counter char device support, we will be able to attach
timestamps and measure actual pulse
Hi Mel,
On Tue, 19 Jan 2021 at 13:02, Mel Gorman wrote:
>
> On Tue, Jan 19, 2021 at 12:33:04PM +0100, Vincent Guittot wrote:
> > On Tue, 19 Jan 2021 at 12:22, Mel Gorman
> > wrote:
> > >
> > > Changelog since v2
> > > o Remove unnecessary parameters
> > > o Update nr during scan only when
On Thu, Jan 21, 2021 at 11:06 AM Wolfram Sang
wrote:
> Signed-off-by: Wolfram Sang
> ---
> Change since v1:
>
> * removed avb1-5 which couldn't be tested
> * added alias for avb0 so firmware can add MAC address
> * added custom tx-internal-delay-ps
> * dropped '_tx' suffix from 'pins_mii' config
Add binding for GPIO based pulse counter node
Signed-off-by: Oleksij Rempel
---
.../bindings/counter/gpio-pulse-counter.yaml | 39 +++
1 file changed, 39 insertions(+)
create mode 100644
Documentation/devicetree/bindings/counter/gpio-pulse-counter.yaml
diff --git
Add simple GPIO base pulse counter. This device is used to measure
rotation speed of some agricultural devices, so no high frequency on the
counter pin is expected.
The maximal measurement frequency depends on the CPU and system load. On
the idle iMX6S I was able to measure up to 20kHz without
On Fri, Jan 22, 2021 at 03:50:50PM +0530, Sumit Garg wrote:
> Currently kdb uses in_interrupt() to determine whether it's library
Looks like a good change just a few nitpicks with the description:
s/it's/its/
> code has been called from the kgdb trap handler or from a saner calling
> context
Hi Moritz,
Thanks for the review.
Please find my response inline.
> -Original Message-
> From: Moritz Fischer
> Sent: Tuesday, January 19, 2021 6:03 AM
> To: Nava kishore Manne
> Cc: m...@kernel.org; t...@redhat.com; robh...@kernel.org; Michal Simek
> ;
On Tue, Jan 19, 2021 at 2:58 PM Kent Gibson wrote:
>
> The description of the flags field of the struct gpio_v2_line_info
> mentions "the GPIO lines" while the info only applies to an individual
> GPIO line. This was accidentally changed from "the GPIO line" during
> formatting improvements.
>
>
Hi all,
Any thoughts on this? I'd like to get this in soon if we could as it'll
help to flush out any remaining issues that are liable to get in the way
of planned rework for arm64 and x86.
Thomas, are you happy to pick this?
Thanks,
Mark.
On Mon, Jan 11, 2021 at 03:37:07PM +, Mark Rutland
On Tue, Jan 19, 2021 at 12:34:23PM +, Alessio Balsini wrote:
> On Tue, Jan 19, 2021 at 07:06:54PM +0800, Rokudo Yan wrote:
> > on Mon, Jan 18, 2021 at 5:27 PM Alessio Balsini wrote:
> > >
> > > This is the 11th version of the series, rebased on top of v5.11-rc4.
> > > Please find the
From: Shuo Liu
Launch a simple guest (with several instructions as payload) on ACRN
with demonstration ioctl usage.
Signed-off-by: Shuo Liu
---
samples/acrn/Makefile| 12
samples/acrn/guest.ld| 9 +++
samples/acrn/payload.ld | 9 +++
samples/acrn/vm-sample.c | 136
On Sun, Jan 17, 2021 at 05:05:46PM +0100, Hans de Goede wrote:
> When the jack is partially inserted and then removed again it may be
> removed while the hpdet code is running. In this case the following
> may happen:
>
> 1. The "JACKDET rise" or ""JACKDET fall" IRQ triggers
> 2. arizona_jackdet
From: Shuo Liu
An I/O request of a User VM, which is constructed by hypervisor, is
distributed by the ACRN Hypervisor Service Module to an I/O client
corresponding to the address range of the I/O request.
I/O client maintains a list of address ranges. Introduce
acrn_ioreq_range_{add,del}() to
EXT4_KUNIT_TESTS selects EXT4_FS, thus enabling an optional feature the
user may not want to enable. Fix this by making the test depend on
EXT4_FS instead.
Fixes: 1cbeab1b242d16fd ("ext4: add kunit test for decoding extended
timestamps")
Signed-off-by: Geert Uytterhoeven
---
Discussion after
From: Shuo Liu
The Service VM communicates with the hypervisor via conventional
hypercalls. VMCALL instruction is used to make the hypercalls.
ACRN hypercall ABI:
* Hypercall number is in R8 register.
* Up to 2 parameters are in RDI and RSI registers.
* Return value is in RAX register.
Hi Allen,
Sorry for long delay.
W dniu 08.12.2020 o 11:58, allen pisze:
> This adds support for the iTE IT6505.
> This device can convert DPI signal to DP output.
>
> From: Allen Chen
> Signed-off-by: Jitao Shi
> Signed-off-by: Pi-Hsun Shih
> Signed-off-by: Yilun Lin
> Signed-off-by: Hermes
From: Shuo Liu
A virtual CPU of User VM has different context due to the different
registers state. ACRN userspace needs to set the virtual CPU
registers state (e.g. giving a initial registers state to a virtual
BSP of a User VM).
HSM provides an ioctl ACRN_IOCTL_SET_VCPU_REGS to do the virtual
From: Shuo Liu
The VM management interfaces expose several VM operations to ACRN
userspace via ioctls. For example, creating VM, starting VM, destroying
VM and so on.
The ACRN Hypervisor needs to exchange data with the ACRN userspace
during the VM operations. HSM provides VM operation ioctls to
From: Shuo Liu
ACRN Hypervisor Service Module (HSM) is a kernel module in Service VM
which communicates with ACRN userspace through ioctls and talks to ACRN
Hypervisor through hypercalls.
Add a basic HSM driver which allows Service VM userspace to communicate
with ACRN. The following patches
On Sun, Jan 17, 2021 at 05:05:49PM +0100, Hans de Goede wrote:
> Move all the jack-detect variables from struct arizona_extcon_info to
> struct arizona_priv.
>
> This is part of a patch series converting the arizona extcon driver into
> a helper library for letting the arizona codec-drivers
This is used to fix dtbs_check warning.
Signed-off-by: Chunfeng Yun
---
v2: no changes
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
Hi,
This series adds support for SAMA7G5 identification. Along with this
included also some fixes.
Thank you,
Claudiu Beznea
Claudiu Beznea (7):
drivers: soc: atmel: add spdx licence identifier
drivers: soc: atmel: use GENMASK
drivers: soc: atmel: fix "__initconst should be placed after
Add DT binding for SAMA7G5's CHIPID.
Signed-off-by: Claudiu Beznea
---
Documentation/devicetree/bindings/arm/atmel-sysregs.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
From: Alexander Lobakin
Date: Fri, 22 Jan 2021 11:55:35 +
> From: Alexander Lobakin
> Date: Fri, 22 Jan 2021 11:47:45 +
>
> > From: Eric Dumazet
> > Date: Thu, 21 Jan 2021 16:41:33 +0100
> >
> > > On 1/21/21 2:47 PM, Xuan Zhuo wrote:
> > > > This patch is used to construct skb based
Fix checkpatch.pl warning: "__initconst should be placed after socs[]".
Signed-off-by: Claudiu Beznea
---
drivers/soc/atmel/soc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c
index ef591b622583..9d10a526cd3c 100644
---
Add support for SAMA7G5 SoCs.
Signed-off-by: Claudiu Beznea
---
drivers/soc/atmel/soc.c | 18 ++
drivers/soc/atmel/soc.h | 6 ++
2 files changed, 24 insertions(+)
diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c
index 54339b8243cc..fb9d9cf8faf2 100644
---
+ Adrian
On Tue, 8 Dec 2020 at 07:19, Chris Ruehl wrote:
>
> Fix the probe if hs400-1_8v / hs400-1_2v is used in the
> dts and mmc-hs400-enhanced-strobe isn't set.
> That was the first attemped, but it turns out that some
> more cleanups and simplifications can be done.
My apologies for the
On 2021-01-22 12:13, Catalin Marinas wrote:
On Thu, Jan 21, 2021 at 06:59:37PM +, Robin Murphy wrote:
On 2021-01-21 17:46, Will Deacon wrote:
On Thu, Jan 21, 2021 at 10:21:50PM +0530, Prathu Baronia wrote:
This patch removes the unnecessary kmap calls in the hugepage zeroing path and
The testcase runs few instances of the program with RLIMIT_NPROC=1 from
user uid=6, in different user namespaces.
Signed-off-by: Alexey Gladkov
---
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/rlimits/.gitignore| 2 +
After calling set_user(), we always have to call commit_creds() to apply
new credentials upon the current task. There is no need to separate
limit check and counter incrementing.
Signed-off-by: Alexey Gladkov
---
kernel/cred.c | 22 +-
kernel/sys.c | 13 -
2
Signed-off-by: Alexey Gladkov
---
fs/proc/array.c| 2 +-
include/linux/sched/user.h | 1 -
include/linux/signal_types.h | 4 ++-
include/linux/user_namespace.h | 1 +
kernel/fork.c | 1 +
kernel/signal.c| 53
On Fri, Jan 22, 2021 at 08:53:02PM +0800, Kai-Heng Feng wrote:
> Commit 8765c5ba1949 ("ACPI / scan: Rework modalias creation when
> "compatible" is present") may create two "MODALIAS=" in uevent file if
> conditions are met.
>
> This breaks systemd-udevd, which assumes each "key" in uevent file
Signed-off-by: Alexey Gladkov
---
include/linux/sched/user.h | 4
include/linux/user_namespace.h | 1 +
ipc/mqueue.c | 29 +++--
kernel/fork.c | 1 +
kernel/ucount.c| 1 +
kernel/user_namespace.c| 1
RLIMIT_NPROC is implemented on top of ucounts. The process counter is
tied to the user in the user namespace. Therefore, there is no longer
one single counter for the user. Instead, there is now one counter for
each user namespace. Thus, getting the RLIMIT_NPROC counter value to
check the rlimit
On 1/22/21 8:21 AM, Steven Price wrote:
On 21/01/2021 17:04, Lukasz Luba wrote:
The simple_ondemand devfreq governor uses two thresholds to decide about
the frequency change: upthreshold, downdifferential. These two tunable
change the behavior of the governor decision, e.g. how fast to
On 21/01/2021 22:17, Song Bao Hua (Barry Song) wrote:
>
>
>> -Original Message-
>> From: Dietmar Eggemann [mailto:dietmar.eggem...@arm.com]
>> Sent: Friday, January 22, 2021 7:54 AM
>> To: Valentin Schneider ; Meelis Roos
>> ; LKML
>> Cc: Peter Zijlstra ; Vincent Guittot
>> ; Song Bao
On 1/21/21 5:15 PM, Daniel Lezcano wrote:
On 21/01/2021 18:04, Lukasz Luba wrote:
The simple_ondemand devfreq governor uses two thresholds to decide about
the frequency change: upthreshold, downdifferential. These two tunable
change the behavior of the governor decision, e.g. how fast to
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,
Hi Michal,
Thanks for the review.
Please find my response inline.
> -Original Message-
> From: Michal Simek
> Sent: Monday, January 18, 2021 2:22 PM
> To: Nava kishore Manne ; m...@kernel.org;
> t...@redhat.com; robh...@kernel.org; Michal Simek ;
> linux-f...@vger.kernel.org;
Booke and 40x have wrtee and wrteei to quickly change MSR EE.
8xx has registers SPRN_NRI, SPRN_EID and SPRN_EIE for changing
MSR EE and RI.
Use them in syscall and exception handler when possible.
On an 8xx, it reduces the null_syscall test by 6 cycles (Two
instances are changed in this patch,
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.
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
THREAD_ALIGN_SHIFT = THREAD_SHIFT + 1 = PAGE_SHIFT + 1
Maximum PAGE_SHIFT is 18 for 256k pages so
THREAD_ALIGN_SHIFT is 19 at the maximum.
No need to clobber cr1, it can be preserved when moving r1
into CR when we check stack overflow.
Signed-off-by: Christophe Leroy
---
Hi, Will, Marc,
Is there any further comment on the v3 series I post previously?
If they are not fine to you, then I think maybe we should just turn
back to the original solution in v1, where I suggestted to filter out
the case of only updating access permissions in the map handler and
handle it
On Fri, Jan 22, 2021 at 03:08:31PM +0530, Sumit Garg wrote:
> Currently kdb uses in_interrupt() to determine whether it's library
> code has been called from the kgdb trap handler or from a saner calling
> context such as driver init. This approach is broken because
> in_interrupt() alone isn't
Procedures of hyp stage-1 map and guest stage-2 map are quite different,
but they are tied closely by function kvm_set_valid_leaf_pte().
So adjust the relative code for ease of code maintenance in the future.
Signed-off-by: Yanan Wang
---
arch/arm64/kvm/hyp/pgtable.c | 54
On Thu, Jan 21, 2021 at 07:33:54PM -0600, Samuel Holland wrote:
> On 1/21/21 2:35 PM, Marc Zyngier wrote:
> > On Sun, 17 Jan 2021 23:50:30 -0600, Samuel Holland wrote:
> >> Allwinner sun6i/sun8i/sun50i SoCs (A31 and newer) have two interrupt
> >> controllers: GIC and R_INTC. GIC does not support
On 22/01/2021 09:33, Michael Kerrisk (man-pages) wrote:
> Hello Mickaël,
Hi Michael,
>
> It would be great to have some manual pages for these system calls
> before release... Can you prepare something?
Yes, I will start some pages based on the current documentation, but it
will be some time
> > .../boot/dts/renesas/r8a779a0-falcon-cpu.dtsi | 160 ++
>
> New file r8a779a0-falcon-ether.dtsi?
Makes sense.
>
> > + ins_mii {
>
> pins_mii
Now, how did that happen? Thanks!
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From: Gabriel Fernandez
Adds support for probe deferral in way to prepare
integration of the security in RCC clock and reset
drivers.
Some kernel clocks will be provided by the SCMI drivers.
Since RCC clock driver create clocks which parents
are SCMI clocks, RCC clock driver probe can be
From: Gabriel Fernandez
st32mp1 RCC reset driver was moved into stm32mp1 RCC clock driver.
Signed-off-by: Gabriel Fernandez
---
drivers/reset/Kconfig | 6 --
drivers/reset/Makefile | 1 -
drivers/reset/reset-stm32mp1.c | 115 -
3 files
From: Gabriel Fernandez
This patch is to prepare STM32MP1 clocks in trusted mode.
Integrate the mux clock into pll clock will facilitate to have a more
coherent clock tree in no trusted / trusted mode.
Signed-off-by: Gabriel Fernandez
---
drivers/clk/clk-stm32mp1.c | 65
From: Gabriel Fernandez
Platform STM32MP1 can be used in configuration where some clock
resources cannot be accessed by Linux kernel when executing in non-secure
state of the CPU(s).
In such configuration, the RCC clock driver must not register clocks
it cannot access.
They are expected to be
From: Gabriel Fernandez
Introduce new compatible string "st,stm32mp1-rcc-secure" for
stm32mp1 clock driver when the device is configured with RCC
security support hardened.
Signed-off-by: Etienne Carriere
Signed-off-by: Gabriel Fernandez
---
From: Gabriel Fernandez
Include this .dtsi file to be backward compatible with old basic bootchain.
For example add:
#include "stm32mp15-no-scmi.dtsi" in a stm32mp157c*.dts file.
Signed-off-by: Gabriel Fernandez
---
arch/arm/boot/dts/stm32mp15-no-scmi.dtsi | 158 +++
1
From: Gabriel Fernandez
Platform stm32mp15 relies on SCMI resources (clocks and reset domains).
This change adds SCMI resources description in the platform device
tree. SCMI resources uses a mailbox based on some shared memory and
a SMC mailbox notification.
SCMI0 exposes clocks and reset
From: Shuo Liu
ACRN is a Type 1 reference hypervisor stack, running directly on the bare-metal
hardware, and is suitable for a variety of IoT and embedded device solutions.
ACRN implements a hybrid VMM architecture, using a privileged Service VM. The
Service VM manages the system resources
From: Arnd Bergmann
The kernel test robot keeps reporting the same bug when it
shows up in new files after random unrelated patches:
In file included from arch/mips/include/uapi/asm/byteorder.h:13,
from arch/mips/include/asm/bitops.h:20,
from
From: Shuo Liu
PCI device passthrough enables an OS in a virtual machine to directly
access a PCI device in the host. It promises almost the native
performance, which is required in performance-critical scenarios of
ACRN.
HSM provides the following ioctls:
- Assign - ACRN_IOCTL_ASSIGN_PCIDEV
From: Arnd Bergmann
kgdb fails to build when the FPU support is disabled:
arch/mips/kernel/kgdb.c: In function 'dbg_set_reg':
arch/mips/kernel/kgdb.c:147:35: error: 'struct thread_struct' has no member
named 'fpu'
147 |memcpy((void *)>thread.fpu.fcr31, mem,
|
From: Shuo Liu
ACRN supports partition mode to achieve real-time requirements. In
partition mode, a CPU core can be dedicated to a vCPU of User VM. The
local APIC of the dedicated CPU core can be passthrough to the User VM.
The Service VM controls the assignment of the CPU cores.
Introduce an
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