Hi Oleksii,
On 09/02/2024 17:58, Oleksii Kurochko wrote:
find-next-bit.c is common for Arm64, PPC and RISCV64,
so it is moved to xen/lib.
PPC has been transitioned to generic functions from find-next-bit.c
since it now shares the same implementation as the PPC-specific code.
The MISRA exclude list has been updated to verify
lib/find-next-bit.c instead of Arm's find_next_bit.c,
as Arm's find_next_bit.c has been relocated to xen/lib/.
Despite CONFIG_GENERIC_FIND_FIRST_BIT not currently being used in
Xen and being removed from the Linux kernel [1], it could theoretically
prove useful for Xen. This is because the Linux kernel transitioned
Arm to the generic version of find_first_bit() and
find_first_zero_bit() due to improvements [1] in both performance
and .text size.
It would be prudent to investigate whether [1] is applicable to Xen
as well and, if so, implement the necessary changes in a separate patch.
[1]
https://lore.kernel.org/linux-arch/20211005054059.475634-5-yury.no...@gmail.com/
Suggested-by: Jan Beulich <jbeul...@suse.com>
Signed-off-by: Oleksii Kurochko <oleksii.kuroc...@gmail.com>
Reviewed-by: Julien Grall <jgr...@amazon.com>
Cheers,
--
Julien Grall
