From: Sanjay Lal <sanjayl@kymasys.com>
Date: Sat, 18 May 2013 13:54:24 +0000 (-0700)
Subject: KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
X-Git-Tag: v3.10-rc3~27^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d17c0d1e8a66f5508082cb0fecb8afb7e9a21e4;p=pandora-kernel.git

KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()

- As suggested by Gleb, wrap calls to gfn_to_pfn() with srcu_read_lock/unlock().
  Memory slots should be acccessed from a SRCU read section.
- kvm_mips_map_page() now returns an error code to it's callers, instead of
  calling panic() if it cannot find a mapping for a particular gfn.

Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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