KVM: x86 emulator: preserve an operand's segment identity

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Currently the x86 emulator converts the segment register associated with
an operand into a segment base which is added into the operand address.
This loss of information results in us not doing segment limit checks properly.

Replace struct operand's addr.mem field by a segmented_address structure
which holds both the effetive address and segment.  This will allow us to
do the limit check at the point of access.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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This commit is contained in:

Avi Kivity 2010-11-17 15:28:21 +02:00

parent d53db5efc2

commit 90de84f50b

2 changed files with 59 additions and 52 deletions

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5

arch/x86/include/asm/kvm_emulate.h

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106

arch/x86/kvm/emulate.c

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