linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Jan Beulich" <JBeulich@suse.com>
To: <mingo@elte.hu>, <tglx@linutronix.de>, <hpa@zytor.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/2] x86-64: allow using RIP-relative addressing for per-CPU data
Date: Tue, 04 Nov 2014 08:49:32 +0000	[thread overview]
Message-ID: <5458A12C0200007800044A97@mail.emea.novell.com> (raw)

Observing that per-CPU data (in the SMP case) is reachable by
exploiting 64-bit address wraparound, these two patches
arrange for using the one byte shorter RIP-relative addressing
forms for the majority of per-CPU accesses.

1: handle PC-relative relocations on per-CPU data
2: use RIP-relative addressing for most per-CPU accesses

Signed-off-by: Jan Beulich <jbeulich@suse.com>


             reply	other threads:[~2014-11-04  8:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-04  8:49 Jan Beulich [this message]
2014-11-04 19:33 ` [PATCH 0/2] x86-64: allow using RIP-relative addressing for per-CPU data Andy Lutomirski
2014-11-05 17:09   ` Jan Beulich
2014-11-05 17:15     ` Andy Lutomirski

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=5458A12C0200007800044A97@mail.emea.novell.com \
    --to=jbeulich@suse.com \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).