KVM: Fix segment descriptor loading

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Add proper error and permission checking. This patch also change task
switching code to load segment selectors before segment descriptors, like
SDM requires, otherwise permission checking during segment descriptor
loading will be incorrect.

Cc: stable@kernel.org (2.6.33, 2.6.32)
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Gleb Natapov 2010-02-18 12:15:01 +02:00 • committed by Marcelo Tosatti

parent 6f550484a1

commit c697518a86

3 changed files with 151 additions and 59 deletions

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3

arch/x86/include/asm/kvm_host.h

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30

arch/x86/kvm/emulate.c

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177

arch/x86/kvm/x86.c

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