Re: [PATCH] kernel: Expose SYS_kcmp by default

From: Pavel Machek
Date: Sat Feb 13 2021 - 12:48:07 EST


Hi!

> Userspace has discovered the functionality offered by SYS_kcmp and has
> started to depend upon it. In particular, Mesa uses SYS_kcmp for
> os_same_file_description() in order to identify when two fd (e.g. device
> or dmabuf) point to the same struct file. Since they depend on it for
> core functionality, lift SYS_kcmp out of the non-default
> CONFIG_CHECKPOINT_RESTORE into the selectable syscall category.

Is it good idea to enable everything because Mesa uses it for file
descriptors?

This is really interesting syscall...

Best regards,
Pavel

--
http://www.livejournal.com/~pavelmachek

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