From: Gleb Natapov <gleb@redhat.com>
Date: Thu, 18 Mar 2010 13:20:26 +0000 (+0200)
Subject: KVM: x86 emulator: restart string instruction without going back to a guest.
X-Git-Tag: v2.6.35-rc1~436^2~148
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cd21917da245fbe98bd443de2c7f519b3df6814;p=pandora-kernel.git

KVM: x86 emulator: restart string instruction without going back to a guest.

Currently when string instruction is only partially complete we go back
to a guest mode, guest tries to reexecute instruction and exits again
and at this point emulation continues. Avoid all of this by restarting
instruction without going back to a guest mode, but return to a guest
mode each 1024 iterations to allow interrupt injection. Pending
exception causes immediate guest entry too.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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