From: Isaku Yamahata <yamahata@valinux.co.jp>
Date: Mon, 19 May 2008 13:13:31 +0000 (+0900)
Subject: [IA64] pvops: preparation: introduce ia64_get_psr_i() to make kernel paravirtualizati... 
X-Git-Tag: v2.6.27-rc1~948^2~6^2~15
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72cb4256c7574e1c2c1350fa92eecd7cef9e4772;p=pandora-kernel.git

[IA64] pvops: preparation: introduce ia64_get_psr_i() to make kernel paravirtualization friendly.

__local_irq_save() and local_save_flags() are used to mask interruptions.
They read all psr bits that requres whole bit emulation.
On the other hand, reading only psr.i, the single bit, can be virtualized
cheaply.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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