Re: [PATCH] x86/entry: Improve system call entry comments

From: H. Peter Anvin
Date: Tue Mar 08 2016 - 13:48:39 EST

On 03/08/16 10:45, Andy Lutomirski wrote:
> s/modern/most, perhaps?
> I'm hoping that some day Bionic goes away and gets replaced by musl.
> Of course, musl doesn't always use fast syscalls because it needs a
> vdso facility that doesn't currently exist. I'll deal with that
> eventually.

You don't actually need actual DSO support to support fast system calls
on i386. Even klibc uses them now, and the additional code to support
it is trivial.