On Mon, Oct 12, 2020 at 6:46 AM Jens Axboe <axboe@xxxxxxxxx> wrote:
>
> Here are the io_uring updates for 5.10.
Very strange. My clang build gives a warning I've never seen before:
/tmp/io_uring-dd40c4.s:26476: Warning: ignoring changed section
attributes for .data..read_mostly
and looking at what clang generates for the *.s file, it seems to be
the "section" line in:
.type io_op_defs,@object # @io_op_defs
.section .data..read_mostly,"a",@progbits
.p2align 4
I think it's the combination of "const" and "__read_mostly".
I think the warning is sensible: how can a piece of data be both
"const" and "__read_mostly"? If it's "const", then it's not "mostly"
read - it had better be _always_ read.
I'm letting it go, and I've pulled this (gcc doesn't complain), but
please have a look.
Linus
