From: Zou Nan hai <nanhai.zou@intel.com>
To: linux-ia64@vger.kernel.org
Subject: [Patch] Don't alloc empty frame in ia64_switch_mode_phys
Date: Tue, 25 Jul 2006 23:36:40 +0000 [thread overview]
Message-ID: <1153870600.3286.72.camel@linux-znh> (raw)
I think ia64_switch_mode_phys and ia64_switch_mode_virt
does not need to alloc an empty frame.
An empty frame is required by loadrs but flushrs
does not need that.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
--- linux-2.6.18-rc2/arch/ia64/kernel/head.S 2006-07-26 11:30:08.000000000 +0800
+++ linux-2.6.18-rc2-fix/arch/ia64/kernel/head.S 2006-07-26 12:26:00.000000000 +0800
@@ -853,7 +853,6 @@ END(__ia64_init_fpu)
*/
GLOBAL_ENTRY(ia64_switch_mode_phys)
{
- alloc r2=ar.pfs,0,0,0,0
rsm psr.i | psr.ic // disable interrupts and interrupt collection
mov r15=ip
}
@@ -902,7 +901,6 @@ END(ia64_switch_mode_phys)
*/
GLOBAL_ENTRY(ia64_switch_mode_virt)
{
- alloc r2=ar.pfs,0,0,0,0
rsm psr.i | psr.ic // disable interrupts and interrupt collection
mov r15=ip
}
next reply other threads:[~2006-07-25 23:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-25 23:36 Zou Nan hai [this message]
2006-07-26 15:33 ` [Patch] Don't alloc empty frame in ia64_switch_mode_phys Chen, Kenneth W
2006-07-26 21:08 ` Zou Nan hai
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