From: Jes Sorensen <jes@sgi.com>
Date: Thu, 9 Apr 2009 14:38:14 +0000 (+0200)
Subject: KVM: ia64: fix locking order entering guest
X-Git-Tag: v2.6.30-rc4~59^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d24d2c1cc4156102f9df9cd0425d58cabf955519;p=pandora-kernel.git

KVM: ia64: fix locking order entering guest

Reorder locking as down_read() may return with local interrupts enabled,
which means we could go into vti_vcpu_run() with interrupts enabled.

This caused random crashes on the Altix as the timer interrupt tried
to read a memory mapped clock source, for which the TLB had not yet been
reinstated in the exit, before ipsr was retored.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

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