DO NOT APPLY: x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack

From: Andrew Lutomirski
Date: Tue Jul 15 2014 - 19:22:14 EST

On Tue, Jul 15, 2014 at 2:28 PM, Kamal Mostafa <kamal@xxxxxxxxxxxxx> wrote:
> -stable review patch. If anyone has any objections, please let me know.
> ------------------
> From: "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx>
> commit 3891a04aafd668686239349ea58f3314ea2af86b upstream.

Do not apply to any -stable release yet. This causes nasty regressions on Xen.

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