From: Len Brown <lenb@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org,
linux-pm@lists.linux-foundation.org,
Len Brown <len.brown@intel.com>
Subject: [PATCH 1/9] x86 idle: remove "no-hlt" cmdline param
Date: Thu, 31 Mar 2011 02:03:16 -0400 [thread overview]
Message-ID: <67e90d97e0a77df4acd0c75e1bacc7714e011f3e.1301550524.git.len.brown@intel.com> (raw)
In-Reply-To: <1301551404-8263-1-git-send-email-lenb@kernel.org>
From: Len Brown <len.brown@intel.com>
The X86_32-only "no-hlt" option was the functional equivalent of
"idle=poll" for the idle loop.
It would also set the X86_32-only "hlt_bug" line in the /proc/cpuinfo,
and cause halt to be skipped in stop_this_cpu().
Signed-off-by: Len Brown <len.brown@intel.com>
---
Documentation/kernel-parameters.txt | 4 ----
arch/x86/kernel/cpu/bugs.c | 8 --------
2 files changed, 0 insertions(+), 12 deletions(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index f4a04c0..e6b4843 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1666,10 +1666,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
wfi(ARM) instruction doesn't work correctly and not to
use it. This is also useful when using JTAG debugger.
- no-hlt [BUGS=X86-32] Tells the kernel that the hlt
- instruction doesn't work correctly and not to
- use it.
-
no_file_caps Tells the kernel not to honor file capabilities. The
only way then for a file to be executed with privilege
is to be setuid root or executed by root.
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index c39576c..4c91631 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -17,14 +17,6 @@
#include <asm/paravirt.h>
#include <asm/alternative.h>
-static int __init no_halt(char *s)
-{
- boot_cpu_data.hlt_works_ok = 0;
- return 1;
-}
-
-__setup("no-hlt", no_halt);
-
static int __init no_387(char *s)
{
boot_cpu_data.hard_math = 0;
--
1.7.4.2.406.gbe91
next prev parent reply other threads:[~2011-03-31 6:03 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 7:08 [PATCH 0/5] x86 idle cruft removal Len Brown
2011-03-24 7:08 ` [PATCH 1/5] x86 idle: remove "no-hlt" cmdline param Len Brown
2011-03-24 7:08 ` [PATCH 2/5] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag Len Brown
2011-03-24 7:08 ` [PATCH 3/5] x86 idle: remove NOP halt_works() Len Brown
2011-03-24 7:08 ` [PATCH 4/5] x86 idle floppy: delete disable_hlt()/enable_hlt() Len Brown
2011-03-24 15:58 ` Andi Kleen
2011-03-24 7:08 ` [PATCH 5/5] x86 idle: remove NOP hlt_use_halt() Len Brown
2011-03-25 19:02 ` [linux-pm] " Vaidyanathan Srinivasan
2011-03-31 6:03 ` [PATCH 0/9] x86 idle cruft removal - v2 Len Brown
2011-03-31 6:03 ` Len Brown [this message]
2011-03-31 6:03 ` [PATCH 2/9] x86 idle: remove NOP cpuinfo_x86.hlt_works_ok flag Len Brown
2011-03-31 6:12 ` Ingo Molnar
2011-03-31 7:02 ` Len Brown
2011-03-31 8:18 ` Ingo Molnar
2011-03-31 9:23 ` Alan Cox
2011-03-31 9:27 ` Ingo Molnar
2011-03-31 9:33 ` Alan Cox
2011-03-31 9:35 ` Ingo Molnar
2011-03-31 14:19 ` H. Peter Anvin
2011-03-31 14:41 ` Alan Cox
2011-03-31 15:09 ` H. Peter Anvin
2011-03-31 18:07 ` Len Brown
2011-03-31 18:28 ` H. Peter Anvin
2011-03-31 6:03 ` [PATCH 3/9] x86 idle: remove NOP halt_works() Len Brown
2011-03-31 6:03 ` [PATCH 4/9] x86 idle floppy: delete disable_hlt()/enable_hlt() Len Brown
2011-03-31 6:03 ` [PATCH 5/9] x86 idle: remove NOP hlt_use_halt() Len Brown
2011-03-31 6:03 ` [PATCH 6/9] x86 idle APM: delete apm_cpu_idle(), and its use of (pm_idle)() Len Brown
2011-03-31 6:03 ` [PATCH 7/9] x86 idle: do not EXPORT_SYMBOL pm_idle and default_idle Len Brown
2011-03-31 6:03 ` [PATCH 8/9] x86 idle: move mwait_idle_with_hints() to where it is used Len Brown
2011-03-31 6:03 ` [PATCH 9/9] x86 idle: delete mwait_idle() Len Brown
2011-04-01 11:02 ` Andreas Herrmann
2011-03-31 6:39 ` [linux-pm] [PATCH 0/9] x86 idle cruft removal - v2 Trinabh Gupta
2011-03-31 7:21 ` Len Brown
2011-03-31 9:45 ` Alan Cox
2011-03-31 10:28 ` Ingo Molnar
2011-04-01 4:24 ` Len Brown
2011-04-01 9:38 ` [linux-pm] " Trinabh Gupta
2011-04-01 18:33 ` Len Brown
2011-04-02 6:22 ` idle cleanup - v3 Len Brown
2011-04-02 6:22 ` [PATCH 01/18] cpuidle: menu: fixed wrapping timers at 4.294 seconds Len Brown
2011-04-02 6:22 ` [PATCH 02/18] x86 idle floppy: deprecate disable_hlt() Len Brown
2011-04-02 6:22 ` [PATCH 03/18] x86 idle APM: deprecate CONFIG_APM_CPU_IDLE Len Brown
2011-04-02 11:28 ` Alan Cox
2011-04-02 18:28 ` Len Brown
2011-04-02 19:44 ` Alan Cox
2011-04-08 6:22 ` Pavel Machek
2011-04-02 6:22 ` [PATCH 04/18] x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it Len Brown
2011-04-02 11:28 ` Alan Cox
2011-04-02 12:21 ` [linux-pm] " Trinabh Gupta
2011-04-02 6:22 ` [PATCH 05/18] x86 idle: deprecate "no-hlt" cmdline param Len Brown
2011-04-02 6:22 ` [PATCH 06/18] x86 idle: deprecate mwait_idle() and "idle=mwait" " Len Brown
2011-04-02 6:22 ` [PATCH 07/18] x86 idle: clarify AMD erratum 400 workaround Len Brown
2011-04-02 8:23 ` Borislav Petkov
2011-04-02 19:19 ` Len Brown
2011-04-02 19:22 ` [PATCH 07/18] x86 idle: clarify AMD erratum 400 workaround -v2 Len Brown
2011-04-03 9:00 ` Borislav Petkov
2011-04-02 6:22 ` [PATCH 08/18] cpuidle: create bootparam "cpuidle.off=1" Len Brown
2011-07-15 11:27 ` [linux-pm] " Deepthi Dharwar
2011-04-02 6:22 ` [PATCH 09/18] cpuidle: replace xen access to x86 pm_idle and default_idle Len Brown
2011-04-04 15:33 ` [Xen-devel] " Konrad Rzeszutek Wilk
2011-04-02 6:22 ` [PATCH 10/18] x86 idle: move mwait_idle_with_hints() to where it is used Len Brown
2011-04-02 6:22 ` [PATCH 11/18] cpuidle: stop using pm_idle Len Brown
2011-04-25 10:41 ` [linux-pm] " Trinabh Gupta
2011-04-02 6:22 ` [PATCH 12/18] 2.6.40: x86 idle: remove deprecated "no-hlt" cmdline param Len Brown
2011-04-02 6:22 ` [PATCH 13/18] 2.6.40: x86 idle: remove deprecated "hlt_bug: no" in 32-bit /proc/cpuinfo Len Brown
2011-04-02 6:22 ` [PATCH 14/18] 2.6.40: x86 idle floppy: remove deprecated disable_hlt()/enable_hlt() Len Brown
2011-04-02 6:22 ` [PATCH 15/18] 2.6.40: x86 idle: remove deprecated hlt_use_halt() Len Brown
2011-04-02 6:22 ` [PATCH 16/18] 2.6.40: x86 idle APM: remove deprecated apm_cpu_idle() Len Brown
2011-04-02 11:40 ` Alan Cox
2011-04-02 19:44 ` Len Brown
2011-04-02 21:00 ` Alan Cox
2011-04-03 2:48 ` [linux-pm] " Trinabh Gupta
2011-04-04 10:05 ` Alan Cox
2011-04-02 6:22 ` [PATCH 17/18] 2.6.40: x86 idle: do not export default_idle() and (pm_idle)() Len Brown
2011-04-02 6:23 ` [PATCH 18/18] 2.6.40: x86 idle: remove deprecated mwait_idle() Len Brown
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