All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: heiko carstens <heiko.carstens@de.ibm.com>
Cc: carlos <carlos@redhat.com>, Florian Weimer <fweimer@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Boqun Feng <boqun.feng@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	libc-alpha <libc-alpha@sourceware.org>
Subject: Re: Restartable Sequences system call merged into Linux
Date: Wed, 13 Jun 2018 15:53:38 -0400 (EDT)	[thread overview]
Message-ID: <410804326.12703.1528919618748.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <1904010978.12481.1528906458944.JavaMail.zimbra@efficios.com>

----- On Jun 13, 2018, at 12:14 PM, Mathieu Desnoyers mathieu.desnoyers@efficios.com wrote:

> ----- On Jun 13, 2018, at 7:48 AM, heiko carstens heiko.carstens@de.ibm.com
> wrote:
[...]
>> 
>> Is there any documentation available of what is the exact semantics of the
>> functions that have to be implemented for additional architectures?
> 
> It's documented on top of kernel/rseq.c:
> 

[...]

> 
> The first architecture implemented was rseq-x86.h. Boqun derived rseq-ppc.h
> from it, and I derived rseq-arm.h from it. Feel free to start from whichever
> architecture has the instruction set which is most similar to yours.

One more thing: adding full support for your architecture to the rseq selftests
also requires to extend tools/testing/selftests/rseq/param_test.c to implement
the RSEQ_INJECT_INPUT, INJECT_ASM_REG, RSEQ_INJECT_CLOBBER and RSEQ_INJECT_ASM
macros for your architecture. Those are simply defining the inline asm operands
and assembly code needed to inject delay loops within the rseq critical sections,
which greatly facilitates testing.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

      reply	other threads:[~2018-06-13 19:53 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-11 19:49 Restartable Sequences system call merged into Linux Mathieu Desnoyers
2018-06-11 19:55 ` Florian Weimer
2018-06-11 20:04   ` Mathieu Desnoyers
2018-06-12 13:11     ` Florian Weimer
2018-06-12 16:31       ` Mathieu Desnoyers
2018-06-13  8:21         ` Florian Weimer
2018-06-14 12:27         ` Pavel Machek
2018-06-14 13:01           ` Mathieu Desnoyers
2018-06-14 13:25             ` Pavel Machek
2018-06-14 13:32               ` Florian Weimer
2018-06-14 13:46                 ` Mathieu Desnoyers
2018-06-15  5:10                   ` Florian Weimer
2018-06-15 17:44                     ` Mathieu Desnoyers
2018-06-14 13:38               ` Mathieu Desnoyers
2018-06-14 13:49                 ` Pavel Machek
2018-06-14 14:00                   ` Florian Weimer
2018-06-14 14:36                     ` Mathieu Desnoyers
2018-06-14 14:41                       ` Florian Weimer
2018-06-14 15:09                         ` Mathieu Desnoyers
2018-06-15  5:09             ` Florian Weimer
2018-06-15 17:50               ` Mathieu Desnoyers
2018-06-15  5:07           ` Florian Weimer
2018-06-13 11:48 ` Heiko Carstens
2018-06-13 16:14   ` Mathieu Desnoyers
2018-06-13 19:53     ` Mathieu Desnoyers [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=410804326.12703.1528919618748.JavaMail.zimbra@efficios.com \
    --to=mathieu.desnoyers@efficios.com \
    --cc=boqun.feng@gmail.com \
    --cc=carlos@redhat.com \
    --cc=fweimer@redhat.com \
    --cc=heiko.carstens@de.ibm.com \
    --cc=libc-alpha@sourceware.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=paulmck@linux.vnet.ibm.com \
    --cc=peterz@infradead.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.