login
Login
/
Register
Search
Search this site:
Forums
News
Blogs
Features
Site
Home
»
Mailing list archives
»
linux-kernel
»
2008
»
March
»
21
Re: [PATCH v3] x86: merge the simple bitops and move them to bitops.h
view
thread
Previous message: [
thread
] [
date
] [
author
]
Next message: [
thread
] [
date
] [
author
]
[view in full thread]
From: Ingo Molnar
Subject:
Re: [PATCH v3] x86: merge the simple bitops and move them to bitops.h
Date: Friday, March 21, 2008 - 5:35 am
* Alexander van Heukelum <heukelum@mailshack.com> wrote:
quoted text
> x86: merge the simple bitops and move them to bitops.h. > > Some of those can be written in such a way that the same inline > assembly can be used to generate both 32 bit and 64 bit code. > > For ffs and fls, x86_64 unconditionally used the cmov instruction and > i386 unconditionally used a conditional branch over a mov instruction. > In the current patch I chose to select the version based on the > availability of the cmov instruction instead. A small detail here is > that x86_64 did not previously set CONFIG_X86_CMOV=y. > > Improved comments for ffs, ffz, fls and variations.
thanks Alexander, applied. Ingo --
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to
majordomo@vger.kernel.org
More majordomo info at
http://vger.kernel.org/majordomo-info.html
Please read the FAQ at
http://www.tux.org/lkml/
Previous message: [
thread
] [
date
] [
author
]
Next message: [
thread
] [
date
] [
author
]
Messages in current thread:
[PATCH] x86: merge the simple bitops and move them to bitops.h
, Alexander van Heukelum
, (Wed Mar 12, 1:01 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Jeremy Fitzhardinge
, (Fri Mar 14, 11:07 am)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Alexander van Heukelum
, (Fri Mar 14, 12:43 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Andi Kleen
, (Fri Mar 14, 12:55 pm)
[PATCH v2] x86: merge the simple bitops and move them to b ...
, Alexander van Heukelum
, (Fri Mar 14, 1:35 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Jeremy Fitzhardinge
, (Fri Mar 14, 2:15 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Alexander van Heukelum
, (Fri Mar 14, 2:33 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Andi Kleen
, (Fri Mar 14, 2:42 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Alexander van Heukelum
, (Fri Mar 14, 3:01 pm)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Andi Kleen
, (Fri Mar 14, 3:18 pm)
Re: [PATCH v2] x86: merge the simple bitops and move them ...
, Randy Dunlap
, (Fri Mar 14, 4:30 pm)
[PATCH v3] x86: merge the simple bitops and move them to b ...
, Alexander van Heukelum
, (Sat Mar 15, 5:04 am)
Re: [PATCH] x86: merge the simple bitops and move them to ...
, Alexander van Heukelum
, (Sat Mar 15, 10:54 am)
K8, EFFICEON and CORE2 support the cmovxx instructions.
, Alexander van Heukelum
, (Sat Mar 15, 12:19 pm)
Re: K8, EFFICEON and CORE2 support the cmovxx instructions.
, H. Peter Anvin
, (Sat Mar 15, 1:18 pm)
Re: K8, EFFICEON and CORE2 support the cmovxx instructions.
, Alexander van Heukelum
, (Sat Mar 15, 2:06 pm)
Re: K8, EFFICEON and CORE2 support the cmovxx instructions.
, Willy Tarreau
, (Sat Mar 15, 2:11 pm)
[PATCH] x86: K8, GEODE_LX, CRUSOE, EFFICEON and CORE2 supp ...
, Alexander van Heukelum
, (Sun Mar 16, 6:16 am)
Re: [PATCH v3] x86: merge the simple bitops and move them ...
, Ingo Molnar
, (Fri Mar 21, 5:35 am)
Re: [PATCH] x86: K8, GEODE_LX, CRUSOE, EFFICEON and CORE2 ...
, Ingo Molnar
, (Fri Mar 21, 5:38 am)
Navigation
Mailing list archives
Recent posts
Popular discussions
linux-kernel
:
Greg Kroah-Hartman
[PATCH 041/196] kobject: add kobject_init_and_add function
Lukas Hejtmanek
Re: Another libata error related to OCZ SSD
Greg Kroah-Hartman
[PATCH 023/196] MCP_UCB1200: Convert from class_device to device
Florian Fainelli
Re: System clock runs too fast after 2.6.27 -> 2.6.28.1 upgrade
Christoph Lameter
[patch 1/4] mmu_notifier: Core code
git
:
Johannes Schindelin
Re: [PATCH 1/2] Add strbuf_initf()
John Bito
[EGIT] Push to GitHub caused corruption
Jakub Narebski
Re: [PATCH 0/2] gitweb: patch view
Junio C Hamano
Re: [PATCH] When a remote is added but not fetched, tell the user.
Andy Parkins
Re: [RFC] Submodules in GIT
git-commits-head
:
Linux Kernel Mailing List
ahci: Workaround HW bug for SB600/700 SATA controller PMP support
Linux Kernel Mailing List
V4L/DVB (11086): au0828: rename macro for currently non-function VBI support
Linux Kernel Mailing List
ceph: client types
Linux Kernel Mailing List
ceph: on-wire types
Linux Kernel Mailing List
crypto: chainiv - Use kcrypto_wq instead of keventd_wq
linux-netdev
:
Andrew Morton
Re: [Bugme-new] [Bug 14969] New: b44: WOL does not work in suspended state
Giuseppe CAVALLARO
Re: [PATCH 03/13] stmmac: add the new Header file for stmmac platform data
Taku Izumi
[PATCH 3/3] ixgbe: add registers etc. printout code just before resetting adapters
Eric Dumazet
rps: some comments
Thomas Gleixner
Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:
openbsd-misc
:
Stephan Andreas
problems with login after xlock in OpenBSD release 4.7
pmc
Make A Change. Alcoholism and Drug Addiction Treatment
ropers
Re: what exactly is enc0?
Fuad NAHDI
Re: What does your environment look like?
Matthew Szudzik
Typo on OpenBSD 4.4 CD Set
Colocation donated by:
Syndicate