From: "H. Peter Anvin" <hpa@zytor.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>,
X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Borislav Petkov <bp@alien8.de>, Oleg Nesterov <oleg@redhat.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Brian Gerst <brgerst@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] x86/entry: Improve system call entry comments
Date: Tue, 8 Mar 2016 10:47:43 -0800 [thread overview]
Message-ID: <56DF1E4F.6050809@zytor.com> (raw)
In-Reply-To: <CALCETrUqvs8BbNBamk88x_Uv3NhRODYr9x5d6+WO4xpRBbeNHw@mail.gmail.com>
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.
-hpa
next prev parent reply other threads:[~2016-03-08 18:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-06 17:39 [PATCH] x86/entry: Improve system call entry comments Andy Lutomirski
2016-03-07 8:22 ` Ingo Molnar
2016-03-07 16:34 ` H. Peter Anvin
2016-03-08 10:30 ` Ingo Molnar
2016-03-08 18:40 ` H. Peter Anvin
2016-03-08 18:45 ` Andy Lutomirski
2016-03-08 18:47 ` H. Peter Anvin [this message]
2016-03-08 18:50 ` Andy Lutomirski
2016-03-08 18:59 ` H. Peter Anvin
2016-03-08 19:11 ` Andy Lutomirski
2016-03-07 17:01 ` Andy Lutomirski
2016-03-08 10:27 ` Ingo Molnar
2016-03-08 18:29 ` Andy Lutomirski
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