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    SubjectRe: [PATCH] x86: add missing verify_cpu to 32bit wakeup

    > Some BIOSes will reset the Intel XD_DISABLE MSR bit when resuming from S3,
    > which can interact poorly with ebba638ae723d8a8fc2f7abce5ec18b688b791d7.
    > In 32bit PAE mode, this can lead to a fault when EFER is restored by
    > the kernel wakeup routines, due to it setting the NX bit for a CPU
    > that (thanks to the BIOS reset) now incorrectly thinks it lacks the NX
    > feature. 64bit wakeup already handled this through its common call path
    > that would hit verify_cpu(). 32bit has a separate path for restoring
    > CPU state on S3 wakeup, and needed to call verify_cpu() to handle this
    > situation.
    > Signed-off-by: Kees Cook <>
    > Cc:

    Looks ok to me, but I'm not sure it is stable material.
    (cesky, pictures)

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