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    Subject[PATCH 0/3] Trap and propagate divide errors when emulating DIV
    KVM recently started emulating DIV and IDIV.  However, those instructions
    trap when given the right operands. Since figuring out when to trap or not
    is difficult, we just execute the instruction and see if the processor trapped
    or not.

    tip: please queue the first patch on fast-forward-only branch kvm.git can
    merge, or we can carry the patch in kvm.git with your ack.

    Avi Kivity (3):
    x86: allow kernel exception fixup for divide errors (#DE)
    KVM: x86 emulator: add macros for executing instructions that may
    KVM: x86 emulator: trap and propagate #DE from DIV and IDIV

    arch/x86/kernel/traps.c | 10 +++++++-
    arch/x86/kvm/emulate.c | 60 ++++++++++++++++++++++++++++++++++++++++++++--
    2 files changed, 66 insertions(+), 4 deletions(-)

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      Last update: 2010-08-24 13:13    [W:0.025 / U:59.248 seconds]
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