On 4/5/2022 12:12 AM, guo...@kernel.org wrote:
From: Christoph Hellwig
Don't bother to define the symbols empty, just don't use them.
That makes the intent a little more clear.
Remove the unused HAVE_ARCH_STRUCT_FLOCK64 define and merge the
32-bit mips struct flock into the generic one.
On Thu, Jul 14, 2022 at 06:45:27PM -0700, Max Filippov wrote:
> On Thu, Jul 14, 2022 at 2:47 PM Stafford Horne wrote:
> >
> > The generic pci.h header provides a definition of pci_get_legacy_ide_irq
> > which is used by architectures that use PC-style interrupt numbers.
> >
> > This patch removes
On Thu, Jul 14, 2022 at 2:47 PM Stafford Horne wrote:
>
> The generic pci.h header provides a definition of pci_get_legacy_ide_irq
> which is used by architectures that use PC-style interrupt numbers.
>
> This patch removes the old pci.h in order to make room for a new
> pci.h to be used by
Take the arm64 HWCAP documentation file and adjust it for powerpc.
Signed-off-by: Nicholas Piggin
---
Thanks for the comments.
v2:
- Addition of "categories" paragraph.
- Change "features should not be probed via other means" to "HWCAP is
preferred".
- Speling fix.
-
Excerpts from Segher Boessenkool's message of May 25, 2022 4:32 am:
> On Tue, May 24, 2022 at 11:52:00AM +0200, Florian Weimer wrote:
>> * Nicholas Piggin:
>>
>> > +2. Facilities
>> > +-
>> > +The Power ISA uses the term "facility" to describe a class of
>> > instructions,
>> >
Finally got some details about the icache snoop question so just coming
back to this now, sorry for the delay... (POWER10 does support the
coherent icache flush sequence as expected, there was some updates to
the UM wording but that will be fixed).
Excerpts from Segher Boessenkool's message of
On Wed, 2022-07-13 at 11:53 -0700, Kees Cook wrote:
> On Wed, Jul 13, 2022 at 11:37:34PM +0800, Ning Qiang wrote:
> > In do_adb_query function of drivers/macintosh/adb.c, req->data is
> > copy
> > form userland. the parameter "req->data[2]" is Missing check, the
> > array size of adb_handler[] is
On Wed, 2022-07-13 at 23:37 +0800, Ning Qiang wrote:
> In do_adb_query function of drivers/macintosh/adb.c, req->data is
> copy
> form userland. the parameter "req->data[2]" is Missing check, the
> array size of adb_handler[] is 16, so "adb_handler[
> req->data[2]].original_address" and
The generic pci.h header provides a definition of pci_get_legacy_ide_irq
which is used by architectures that use PC-style interrupt numbers.
This patch removes the old pci.h in order to make room for a new
pci.h to be used by arm64, riscv, openrisc, etc.
The existing code in pci.h is moved out
hello,
On Sun, Jun 12, 2022 at 11:34:00PM +0200, Uwe Kleine-König wrote:
> Returning an error code (here -EBUSY) from a remove callback doesn't
> prevent the driver from being unloaded. The only effect is that an error
> message is emitted and the driver is removed anyhow.
>
> So instead drop
On Thu, Jul 07, 2022 at 01:20:25PM -0400, Stefan Berger wrote:
> Refactor IMA buffer related functions to make them reusable for carrying
> TPM logs across kexec.
>
> Signed-off-by: Stefan Berger
> Cc: Rob Herring
> Cc: Frank Rowand
> Cc: Mimi Zohar
>
> ---
> v6:
> - Add __init to
https://bugzilla.kernel.org/show_bug.cgi?id=216183
--- Comment #8 from Erhard F. (erhar...@mailbox.org) ---
Created attachment 301425
--> https://bugzilla.kernel.org/attachment.cgi?id=301425=edit
bisect.log
Successfully did a bisect which revealed this commit:
# git bisect good
On 2022-07-14, Zhouyi Zhou wrote:
> Thank John for correcting me ;-)
After looking more closely, I do not think disabling migration is the
correct fix either.
The per-cpu variable @wd_timer_tb is written from 2 functions:
- watchdog_timer_interrupt() <-- irq handler
- arch_touch_nmi_watchdog()
Thank John for correcting me ;-)
On Thu, Jul 14, 2022 at 5:25 PM John Ogness wrote:
>
> On 2022-07-14, Zhouyi Zhou wrote:
> > use raw_smp_processor_id() in arch_touch_nmi_watchdog
> > because when called from watchdog, the cpu is preemptible.
>
> I would expect the correct solution is to make
On 2022-07-14, Zhouyi Zhou wrote:
> use raw_smp_processor_id() in arch_touch_nmi_watchdog
> because when called from watchdog, the cpu is preemptible.
I would expect the correct solution is to make it a non-migration
section. Something like the below (untested) patch.
John Ogness
diff --git
Hi All,
Not sure if it has been reported before but the latest mainline kernel
branch fails to build for powerpc allmodconfig with gcc-12 and the error is:
Error: External symbol 'memset' referenced from prom_init.c
make[2]: *** [arch/powerpc/kernel/Makefile:204:
Up until now PPC64 managed to avoid using iommu_ops. The VFIO driver
uses a SPAPR TCE sub-driver and all iommu_ops uses were kept in
the Type1 VFIO driver. Recent development added 2 uses of iommu_ops to
the generic VFIO which broke POWER:
- a coherency capability check;
- blocking IOMMU domain -
The following patches are going to add dependency/use of iommu_ops which
is initialized in subsys_initcall as well.
This moves pciobios_init() to the next initcall level.
This should not cause behavioral change.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/kernel/pci_64.c | 2 +-
1
PPC64 IOMMU API defines iommu_table_group_ops which handles DMA windows
for PEs: control the ownership, create/set/unset a table the hardware
for dynamic DMA windows (DDW). VFIO uses the API to implement support
on POWER.
So far only PowerNV IODA2 (POWER8 and newer machines) implemented this and
Here is another take on iommu_ops on POWER to make VFIO work
again on POWERPC64.
The tree with all prerequisites is here:
https://github.com/aik/linux/tree/kvm-fixes-wip
The previous discussion is here:
The existing iommu_table_in_use() helper checks if the kernel is using
any of TCEs. There are some reserved TCEs:
1) the very first one if DMA window starts from 0 to avoid having a zero
but still valid DMA handle;
2) it_reserved_start..it_reserved_end to exclude MMIO32 window in case
the default
The iommu_table::it_index is a LIOBN which is not initialized on PowerNV
as it is not used except IOMMU debugfs where it is used for a node name.
This initializes it_index witn a unique number to avoid warnings and
have a node for every iommu_table.
This should not cause any behavioral change
On 29/06/22 11:36 am, Alexey Kardashevskiy wrote:
The pseries platform uses 32bit default DMA window (always 4K pages) and
optional 64bit DMA window available via DDW ("Dynamic DMA Windows"),
64K or 2M pages. For ages the default one was not removed and a huge
window was created in addition.
On 7/13/22 11:11 AM, Nicholas Piggin wrote:
Excerpts from Kajol Jain's message of July 11, 2022 1:49 pm:
File book3s_hv_p9_entry.c in powerpc/kvm folder consists of functions
like freeze_pmu, switch_pmu_to_guest and switch_pmu_to_host which are
specific to Performance Monitoring Unit(PMU) for
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