From: Avi Kivity <avi@qumranet.com>
Date: Sun, 28 Oct 2007 14:34:25 +0000 (+0200)
Subject: KVM: x86 emulator: don't depend on cr2 for mov abs emulation
X-Git-Tag: v2.6.25-rc1~1138^2~184
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7e75a3db4ecd952e7a5562cea1b27007bf0c01c;p=pandora-kernel.git

KVM: x86 emulator: don't depend on cr2 for mov abs emulation

The 'mov abs' instruction family (opcodes 0xa0 - 0xa3) still depends on cr2
provided by the page fault handler.  This is wrong for several reasons:

- if an instruction accessed misaligned data that crosses a page boundary,
  and if the fault happened on the second page, cr2 will point at the
  second page, not the data itself.

- if we're emulating in real mode, or due to a FlexPriority exit, there
  is no cr2 generated.

So, this change adds decoding for this instruction form and drops reliance
on cr2.

Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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