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    Subject[patch 62/88] KVM: Fix cpuid leaf 0xb loop termination

    2.6.28-stable review patch. If anyone has any objections, please let us know.

    ------------------

    From: Nitin A Kamble <nitin.a.kamble@intel.com>

    (cherry picked from 0853d2c1d849ef69884d2447d90d04007590b72b)

    For cpuid leaf 0xb the bits 8-15 in ECX register define the end of counting
    leaf. The previous code was using bits 0-7 for this purpose, which is
    a bug.

    Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
    Signed-off-by: Avi Kivity <avi@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    ---
    arch/x86/kvm/x86.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/kvm/x86.c
    +++ b/arch/x86/kvm/x86.c
    @@ -1218,7 +1218,7 @@ static void do_cpuid_ent(struct kvm_cpui
    entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
    /* read more entries until level_type is zero */
    for (i = 1; *nent < maxnent; ++i) {
    - level_type = entry[i - 1].ecx & 0xff;
    + level_type = entry[i - 1].ecx & 0xff00;
    if (!level_type)
    break;
    do_cpuid_1_ent(&entry[i], function, i);



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