On 7/21/23 00:43, Jens Axboe wrote:
On 7/20/23 4:38?PM, Helge Deller wrote:
On 7/21/23 00:30, Jens Axboe wrote:
On 7/19/23 3:20?PM, Helge Deller wrote:
The io_uring testcase is broken on IA-64 since commit d808459b2e31
("io_uring: Adjust mapping wrt architecture aliasing requirements").
The reason is, that this commit introduced an own architecture
independend get_unmapped_area() search algorithm which doesn't suite the
memory region requirements for IA-64.
To avoid similar problems in the future it's better to switch back to
the architecture-provided get_unmapped_area() function and adjust the
needed input parameters before the call. Additionally
io_uring_mmu_get_unmapped_area() will now become easier to understand
and maintain.
This patch has been tested on physical IA-64 and PA-RISC machines,
without any failures in the io_uring testcases. On PA-RISC the
LTP mmmap testcases did not report any regressions either.
I don't expect issues for other architectures, but it would be nice if
this patch could be tested on other machines too.
Any comments from the IA64 folks?
matoro tested it on ia64 at least...
Helge, should this be split into three patches? One for hppa, one for
ia64, and then the io_uring one?
If we split up, I would prefer to split it into 2 patches: One for
io_uring together with the hppa patch, since they should go in
together.
OK, that makes sense. Want to spin a new version done like that?
Yes.
I'll send it tomorrow.
(now that we know it works on the major platforms)
Helge
