[REGRESSION] S3 resume on SandyBridge doesn't work with NXprotection (5bd5a45)

[Matthias Hopf]

Git commit 5bd5a45 in Linus' tree "x86: Add NX protection for kernel data"
apparently breaks resume on SandyBridge machines. This is supposed to be
fixed with commit 691513f "x86: Resume trampoline must be executable",
but even git master (v2.6.38-rc1) shows the same symptoms.

After suspend to S3, the machine doesn't resume upon wakeup, but boots
normally instead. Reverting git commits 691513f, 84e1c6b, and especially
5bd5a45 (trivial except for a single hunk) makes resume work again.

lspci -vvv output is attached.


(for internal reference: machine NUE874)

Matthias

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Matthias Hopf <mhopf@xxxxxxx>      __        __   __
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