[Bug 203845] Can't run qemu/kvm on 5.0.0 kernel (NULL pointer dereference)

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https://bugzilla.kernel.org/show_bug.cgi?id=203845

--- Comment #3 from Jiri Palecek (jpalecek@xxxxxx) ---
So, after bisecting, the first bad commit is:

commit ee6268ba3a6861b2806e569bff7fe91fbdf846dd (refs/bisect/bad)
Author: Liang Chen <liangchen.linux@xxxxxxxxx>
Date:   Wed Jul 25 16:32:14 2018 +0800

    KVM: x86: Skip pae_root shadow allocation if tdp enabled

    Considering the fact that the pae_root shadow is not needed when
    tdp is in use, skip the pae_root shadow page allocation to allow
    mmu creation even not being able to obtain memory from DMA32
    zone when particular cgroup cpuset.mems or mempolicy control is
    applied.

    Signed-off-by: Liang Chen <liangchen.linux@xxxxxxxxx>
    Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>

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