On Wed, Feb 21, 2024 at 01:27:56PM +1000, Nicholas Piggin wrote:
> x86/sieve.c is used by s390x, arm, and riscv via symbolic link. Make a
> new directory common/ for architecture-independent tests and move
> sieve.c here.
>
> Reviewed-by: Thomas Huth
> Signed-off-by: Nicholas Piggin
> ---
> arm
tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
fixes
branch HEAD: 20c8c4dafe93e82441583e93bd68c0d256d7bed4 KVM: PPC: Book3S HV: Fix
L2 guest reboot failure due to empty 'arch_compat'
elapsed time: 1061m
configs tested: 123
configs skipped: 3
The following confi
While running DLPAR CPU remove test on a IBM Power10 server (6.8.0-rc2)
following warning is seen :
[ 2334.165288][ T0] [ cut here ]
[ 2334.165302][ T0] WARNING: CPU: 45 PID: 0 at
arch/powerpc/mm/mmu_context.c:106 switch_mm_irqs_off+0x140/0x170
[ 2334.165316][ T0] Module
On Tue, Feb 20, 2024 at 02:32:53PM -0600, Maxwell Bland wrote:
> Present non-uniform use of __vmalloc_node and __vmalloc_node_range makes
> enforcing appropriate code and data seperation untenable on certain
> microarchitectures, as VMALLOC_START and VMALLOC_END are monolithic
> while the use of th
Hi Baoquan,
On 04/02/24 8:56 am, Baoquan He wrote:
Hope Hari and Pingfan can help have a look, see if
it's doable. Now, I make it either have both kexec and crash enabled, or
disable both of them altogether.
Sure. I will take a closer look...
Thanks a lot. Please feel free to post patches to
From: Madhavan Srinivasan
Add CPU table entries for raw and architected mode. Most fields are
copied from the Power10 table entries.
CPU, MMU and user (ELF_HWCAP) features are unchanged vs P10. However
userspace can detect P11 because the AT_PLATFORM value changes to
"power11".
The logical PVR
From: Madhavan Srinivasan
Base enablement patch to register performance monitoring
hardware support for Power11. Most of fields are copied
from power10_pmu struct for power11_pmu struct.
Signed-off-by: Madhavan Srinivasan
Signed-off-by: Michael Ellerman
---
arch/powerpc/perf/core-book3s.c |
On Thu, Jan 18, 2024 at 10:15 PM Shengjiu Wang wrote:
>
> 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 ne
On Sat, Feb 17, 2024 at 6:42 PM Mauro Carvalho Chehab
wrote:
>
> Em Thu, 18 Jan 2024 20:32:00 +0800
> Shengjiu Wang escreveu:
>
> > 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 b
Add a selftest for migration support in guest library and test harness
code. It performs migrations in a tight loop to irritate races and bugs
in the test harness code.
Include the test in s390, powerpc.
Acked-by: Claudio Imbrenda (s390x)
Reviewed-by: Thomas Huth
Signed-off-by: Nicholas Piggin
x86/sieve.c is used by s390x, arm, and riscv via symbolic link. Make a
new directory common/ for architecture-independent tests and move
sieve.c here.
Reviewed-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
arm/sieve.c| 2 +-
common/sieve.c | 51
Console output required to support migration becomes quite noisy
when doing lots of migrations. Provide a migrate_quiet() call that
suppresses console output and doesn't log a message.
Reviewed-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
lib/migrate.c | 11 +++
lib/migrat
Using 1 and 2 for source and destination is confusing, particularly
now with multiple migrations that flip between them. Do a rename
pass to 'src' and 'dst' to tidy things up.
Acked-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
scripts/arch-run.bash | 111 +-
Support multiple migrations by flipping dest file/socket variables to
source after the migration is complete, ready to start again. A new
destination is created if the test outputs the migrate line again.
Test cases may now switch to calling migrate() one or more times.
Reviewed-by: Thomas Huth
S
Starting a pipeline of jobs in the background does not seem to have
a simple way to reliably find the pid of a particular process in the
pipeline (because not all processes are started when the shell
continues to execute).
The way PID of QEMU is derived can result in a failure waiting on a
PID tha
Rather than put a big script into the trap handler, have it call
a function.
Reviewed-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
scripts/arch-run.bash | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index 11
Migration files were not being removed when the QEMU process is
interrupted (e.g., with ^C). This is becaus the SIGINT propagates to the
bash TRAP handler, which recursively TRAPs due to the 'kill 0' in the
handler. This eventually crashes bash.
This can be observed by interrupting a long-running
Now that strange arm64 hang is found to be QEMU bug, I'll repost.
Since arm64 requires Thomas's uart patch and it is worse affected
by the QEMU bug, I will just not build it on arm. The QEMU bug
still affects powerpc (and presumably s390x) but it's not causing
so much trouble for this test case.
I
In an attempt to protect against write-then-execute attacks wherein an
adversary stages malicious code into a data page and then later uses a
write gadget to mark the data page executable, arm64 enforces PXNTable
when allocating pmd descriptors during the init process. However, these
protections ar
Present non-uniform use of __vmalloc_node and __vmalloc_node_range makes
enforcing appropriate code and data seperation untenable on certain
microarchitectures, as VMALLOC_START and VMALLOC_END are monolithic
while the use of the vmalloc interface is non-monolithic: in particular,
appropriate rando
While other descriptors (e.g. pud) allow allocations conditional on
which virtual address is allocated, pmd descriptor allocations do not.
However, adding support for this is straightforward and is beneficial to
future kernel development targeting the PMD memory granularity.
As many architectures
Reworks ARM's virtual memory allocation infrastructure to support
dynamic enforcement of page middle directory PXNTable restrictions
rather than only during the initial memory mapping. Runtime enforcement
of this bit prevents write-then-execute attacks, where malicious code is
staged in vmalloc'd d
Current BPF and kprobe instruction allocation interfaces do not match
the base kernel and intermingle code and data pages within the same
sections. In the case of BPF, this appears to be a result of code
duplication between the kernel's JIT compiler and arm64's JIT. However,
This is no longer nece
Add support for TIF_NOTIFY_IPI on PowerPC. With TIF_NOTIFY_IPI, a sender
sending an IPI to an idle CPU in TIF_POLLING mode will set the
TIF_NOTIFY_IPI flag in the target's idle tasks's thread_info to pull the
CPU out of idle, as opposed to setting TIF_NEED_RESCHED previously. This
avoids spurious c
From: "Gautham R. Shenoy"
Problem statement
=
When measuring IPI throughput using a modified version of Anton
Blanchard's ipistorm benchmark [1], configured to measure time taken to
perform a fixed number of smp_call_function_single() (with wait set to
1), an increase in benchmar
From: "Gautham R. Shenoy"
Currently TIF_NEED_RESCHED is being overloaded, to wakeup an idle CPU in
TIF_POLLING mode to service an IPI even if there are no new tasks being
woken up on the said CPU.
In preparation of a proper fix, introduce a new helper
"need_resched_or_ipi()" which is intended to
From: "Gautham R. Shenoy"
Introduce the notion of TIF_NOTIFY_IPI flag. When a processor in
TIF_POLLING mode needs to process an IPI, the sender sets NEED_RESCHED
bit in idle task's thread_info to pull the target out of idle and avoids
sending an interrupt to the idle CPU. When NEED_RESCHED is set
Hello everyone,
Before jumping into the issue, let me clarify the Cc list. Everyone have
been cc'ed on Patch 0 through Patch 3. Respective arch maintainers,
reviewers, and committers returned by scripts/get_maintainer.pl have
been cc'ed on the respective arch side changes. Scheduler and CPU Idle
m
On 19/02/2024 15:18, Catalin Marinas wrote:
> On Fri, Feb 16, 2024 at 12:53:43PM +, Ryan Roberts wrote:
>> On 16/02/2024 12:25, Catalin Marinas wrote:
>>> On Thu, Feb 15, 2024 at 10:31:59AM +, Ryan Roberts wrote:
+pte_t contpte_ptep_get_lockless(pte_t *orig_ptep)
+{
+ /*
>>>
On 16/02/2024 19:54, John Hubbard wrote:
> On 2/16/24 08:56, Catalin Marinas wrote:
> ...
>>> The problem is that the contpte_* symbols are called from the ptep_* inline
>>> functions. So where those inlines are called from modules, we need to make
>>> sure
>>> the contpte_* symbols are available.
On 20/02/2024 17:20, Christophe Leroy wrote:
> Michael,
>
> Le 19/11/2022 à 12:30, Ash Logan a écrit :
>> Adds schema for the various Wii U devicetree nodes used.
>>
>> Signed-off-by: Ash Logan
>
> There's an issue at https://github.com/linuxppc/issues/issues/410 with
> kernel v6.4 as a target
Michael Ellerman writes:
> Nathan Lynch via B4 Relay
> writes:
>> From: Nathan Lynch
>>
>> Although the H_PAGE_INIT hcall's H_PAGE_SET_UNUSED historically has
>> been tied to the cooperative memory overcommit (CMO) platform feature,
>> the flag also is treated by the PowerVM hypervisor as a hint
Michael,
Le 19/11/2022 à 12:30, Ash Logan a écrit :
> Adds schema for the various Wii U devicetree nodes used.
>
> Signed-off-by: Ash Logan
There's an issue at https://github.com/linuxppc/issues/issues/410 with
kernel v6.4 as a target to merging thing, any plan ?
It still applies without reba
Hi Michael,
ping ?
Le 01/02/2023 à 15:36, Dawei Li a écrit :
> Commit fc7a6209d571 ("bus: Make remove callback return void") forces
> bus_type::remove be void-returned, it doesn't make much sense for any
> bus based driver implementing remove callbalk to return non-void to
> its caller.
>
> This
On 2/19/24 10:30, Vladimir Oltean wrote:
> Hi Sean,
>
> On Thu, Feb 15, 2024 at 11:23:26AM -0500, Sean Anderson wrote:
>> smp_call_function_single disables IRQs when executing the callback. To
>> prevent deadlocks, we must disable IRQs when taking cgr_lock elsewhere.
>> This is already done by qman
On 02/13/24 at 05:01pm, Hari Bathini wrote:
> struct crash_mem defined under include/linux/crash_core.h represents
> a list of memory ranges. While it is used to represent memory ranges
>From its name, it's not only representing memory ranges, it's
representing crash memory ranges. Except of this,
On Wed, 14 Feb 2024 16:34:06 -0600, Peter Bergner wrote:
> Changes from v1:
> - Add Acked-by lines.
>
> The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for fast
> access by the __builtin_cpu_supports built-in function. The TCB space for
> the HWCAP entries - which are created
On Wed, 10 Jan 2024 16:42:47 +0100, Uwe Kleine-König wrote:
> this series converts all drivers below drivers/macintosh to use
> .remove_new(). See commit 5c5a7680e67b ("platform: Provide a remove
> callback that returns no value") for an extended explanation and the
> eventual goal. The TL;DR; is t
Kajol Jain writes:
> Running event
> hv_gpci/dispatch_timebase_by_processor_processor_time_in_timebase_cycles,phys_processor_idx=0/
> in one of the system throws below error:
>
> ---Logs---
> # perf list | grep
> hv_gpci/dispatch_timebase_by_processor_processor_time_in_timebase_cycles
>
> h
On Thu, 15 Feb 2024 16:18:33 -0600, Gaurav Batra wrote:
> When a PCI device is Dynamically added, LPAR OOPS with NULL pointer
> exception.
>
> Complete stack is as below
>
> [ 211.239206] BUG: Kernel NULL pointer dereference on read at 0x0030
> [ 211.239210] Faulting instruction address: 0x
On Wed, 07 Feb 2024 11:15:26 +0530, Amit Machhiwal wrote:
> Currently, rebooting a pseries nested qemu-kvm guest (L2) results in
> below error as L1 qemu sends PVR value 'arch_compat' == 0 via
> ppc_set_compat ioctl. This triggers a condition failure in
> kvmppc_set_arch_compat() resulting in an EI
Nathan Lynch via B4 Relay
writes:
> From: Nathan Lynch
>
> Although the H_PAGE_INIT hcall's H_PAGE_SET_UNUSED historically has
> been tied to the cooperative memory overcommit (CMO) platform feature,
> the flag also is treated by the PowerVM hypervisor as a hint that the
> page contents need not
Christophe Leroy writes:
> Hi,
>
> Le 19/01/2024 à 11:27, Geoff Levand a écrit :
>> The following changes since commit 44a1aad2fe6c10bfe0589d8047057b10a4c18a19:
>>
>>Merge branch 'topic/ppc-kvm' into next (2023-12-29 15:30:45 +1100)
>>
>> are available in the Git repository at:
>>
>>git
Hi,
On 2024/2/20 17:35, Thomas Gleixner wrote:
On Tue, Feb 20 2024 at 00:19, Bitao Hu wrote:
arch/mips/dec/setup.c| 2 +-
arch/parisc/kernel/smp.c | 2 +-
arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +-
include/linux/irqdesc.h | 9 ++-
include
On Tue, Feb 20 2024 at 00:19, Bitao Hu wrote:
> arch/mips/dec/setup.c| 2 +-
> arch/parisc/kernel/smp.c | 2 +-
> arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +-
> include/linux/irqdesc.h | 9 ++-
> include/linux/kernel_stat.h | 4 +
> kerne
Hello,
On Tue, 2024-02-20 at 04:16 +0100, tuxayo wrote:
> I tried snapshots/2024-01-31/debian-12.0.0-ppc64-NETINST-1.iso
>
> And was able to start booting from usb with:
> boot usb0/disk@1:,\boot\grub\powerpc.elf
> (typed in Open Firmware shell)
> (usb0 is the top port)
>
> Grub worked, and then
Le 20/02/2024 à 09:51, Christophe Leroy a écrit :
>
>
> Le 19/12/2023 à 07:33, Michael Ellerman a écrit :
>> Aneesh Kumar K.V writes:
>>> Luming Yu writes:
>>>
Before we have powerpc to use the generic entry infrastructure,
the call to fire user return notifier is made temporarily i
Le 19/12/2023 à 07:33, Michael Ellerman a écrit :
> Aneesh Kumar K.V writes:
>> Luming Yu writes:
>>
>>> Before we have powerpc to use the generic entry infrastructure,
>>> the call to fire user return notifier is made temporarily in powerpc
>>> entry code.
>>>
>>
>> It is still not clear what
Hi,
Le 15/01/2023 à 20:56, Geoff Levand a écrit :
> To allow HVC backends to set the I/O buffer sizes to values that are most
> efficient for the backend, change the macro definitions where the buffer sizes
> are set to be conditional on whether or not the macros are already defined.
> Also, renam
Le 19/01/2024 à 11:27, Geoff Levand a écrit :
> Patches provided by Nicholas Piggin enable PS3
> support for ELFv2.
The said patches are
https://patchwork.ozlabs.org/project/linuxppc-dev/cover/20231227072405.63751-1-npig...@gmail.com/
>
> Signed-off-by: Geoff Levand
> ---
> arch/powerpc/co
Hi,
Le 19/01/2024 à 11:27, Geoff Levand a écrit :
> The following changes since commit 44a1aad2fe6c10bfe0589d8047057b10a4c18a19:
>
>Merge branch 'topic/ppc-kvm' into next (2023-12-29 15:30:45 +1100)
>
> are available in the Git repository at:
>
>git://git.kernel.org/pub/scm/linux/kernel
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