On Mon, Dec 23, 2024 at 05:41:01PM +0800, Qi Zheng wrote:
> Here we are explicitly dealing with struct page, and the following logic
> semms strange:
>
> tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte)));
>
> tlb_remove_page_ptdesc
> --> tlb_remove_page(tlb, ptdesc_page(pt));
>
> So remove tlb_r
Hi All,
I found out which area is responsible for the KVM HV issue while
reducing the revert patch.
If I replace the following line in the file
'a/arch/powerpc/kvm/e500_mmu_host.c' then KVM HV works again.
- pfn = __kvm_faultin_pfn(slot, gfn, FOLL_WRITE, NULL, &page);
+ pfn =
On Tue, Dec 24, 2024 at 5:13 AM Matthew Maurer wrote:
>
> Generate both the existing modversions format and the new extended one
> when running modpost. Presence of this metadata in the final .ko is
> guarded by CONFIG_EXTENDED_MODVERSIONS.
>
> We no longer generate an error on long symbols in mod
The next patche aligns implementation of cpumask_next_wrap() with the
generic version in find.h which changes function signature.
To make the transition smooth, this patch deprecates current
implementation by adding an _old suffix. The following patches switch
current users to the new implementati
cpumask_next_wrap_old() has two additional parameters, comparing to it's
analogue in linux/find.h find_next_bit_wrap(). The reason for that is
historical.
Before 4fe49b3b97c262 ("lib/bitmap: introduce for_each_set_bit_wrap()
macro"), cpumask_next_wrap() was used to implement for_each_cpu_wrap()
it
The function opencodes for_each_cpu_wrap() macro. As a loop termination
condition it uses cpumask_empty(), which is O(N), and it makes the whole
algorithm O(N^2). Switching to for_each_cpu_wrap() simplifies the logic,
and makes the algorithm linear.
Signed-off-by: Yury Norov
---
arch/powerpc/xmo
cpumask_next_wrap() is overly complicated, comparing to it's generic
version find_next_bit_wrap(), not mentioning it duplicates the above.
It roots to the times when the function was used in the implementation
of for_each_cpu_wrap() iterator. The function has 2 additional parameters
that were used
A loop based on cpumask_next_wrap() opencodes the dedicated macro
for_each_online_cpu_wrap(). Using the macro allows to avoid setting
bits affinity mask more than once when stride >= num_online_cpus.
This also helps to drop cpumask handling code in the caller function.
Signed-off-by: Yury Norov
Most users use this function through the BIN_ATTR_SIMPLE* macros,
they can handle the switch transparently.
This series is meant to be merged through the driver core tree.
Signed-off-by: Thomas Weißschuh
---
Changes in v2:
- Rebase on torvalds/master
- Drop wmi-bmof patch
- Pick up Acks from And
Most users use this function through the BIN_ATTR_SIMPLE* macros,
they can handle the switch transparently.
Also adapt the two non-macro users in the same change.
Signed-off-by: Thomas Weißschuh
---
arch/powerpc/platforms/powernv/opal.c | 2 +-
fs/sysfs/file.c | 2 +-
inclu
The generic function from the sysfs core can replace the custom one.
Signed-off-by: Thomas Weißschuh
Acked-by: Andrii Nakryiko
---
kernel/bpf/btf.c | 15 ++-
1 file changed, 2 insertions(+), 13 deletions(-)
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index
e5a5f023cedd5c288c2
The generic function from the sysfs core can replace the custom one.
Signed-off-by: Thomas Weißschuh
Acked-by: Andrii Nakryiko
---
This is a replacement for [0], as Alexei was not happy about
BIN_ATTR_SIMPLE_RO()
[0]
https://lore.kernel.org/lkml/20241122-sysfs-const-bin_attr-bpf-v1-1-823aea39
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