KVM: Avoid corrupting tr in real mode

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The real mode tr needs to be set to a specific tss so that I/O
instructions can function.  Divert the new tr values to the real
mode save area from where they will be restored on transition to
protected mode.

This fixes some crashes on reboot when the bios accesses an I/O
instruction.

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

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This commit is contained in:

Avi Kivity 2007-05-07 10:55:37 +03:00

parent eff708bc2b

commit 653e3108b7

1 changed files with 31 additions and 14 deletions

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45

drivers/kvm/vmx.c

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