tree a83547a4a40ff4c05a62ab5eb112d4417462d235
parent fe7935d49fbe33308c1b5f0e35137989da851010
author Avi Kivity <avi@qumranet.com> 1193582065 +0200
committer Avi Kivity <avi@qumranet.com> 1201708377 +0200

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>