On 7/10/25 03:44, Chunyan Zhang wrote:
Hi Alex,
On Wed, 9 Jul 2025 at 23:18, Alexandre Ghiti <alex@xxxxxxxx> wrote:
Hi Chunyan,
Patch 2 was merged via fixes, do you plan on resending a new version for
6.17 that takes into account Palmer's remarks?
Yes, I'm preparing the patches these days, just haven't figured out
how to set NSIZE properly for user space.
Just use hwprobe() to make sure V is supported and then csr_read(VLENB)
to retrieve this value, no?
I probably should split the patchset, send out one today.
Thanks,
Chunyan
Thanks,
Alex
On 6/10/25 12:12, Chunyan Zhang wrote:
The first two patches are fixes.
The last two are for userspace raid6test support on RISC-V.
The issue fixed in patch 2/4 was probably the same which was spotted by
Charlie [1], I couldn't reproduce it at that time.
When running raid6test in userspace on RISC-V, I saw a segmentation fault,
I used gdb command to print pointer p, it was an unaccessible address.
With patch 2/4, the issue didn't appear anymore.
[1] https://lore.kernel.org/lkml/Z5gJ35pXI2W41QDk@ghost/
Chunyan Zhang (4):
raid6: riscv: clean up unused header file inclusion
raid6: riscv: Fix NULL pointer dereference issue
raid6: riscv: Allow code to be compiled in userspace
raid6: test: add support for RISC-V
lib/raid6/recov_rvv.c | 9 +-----
lib/raid6/rvv.c | 62 +++++++++++++++++++++--------------------
lib/raid6/rvv.h | 15 ++++++++++
lib/raid6/test/Makefile | 8 ++++++
4 files changed, 56 insertions(+), 38 deletions(-)
