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Date: Wed, 10 Jan 2018 17:02:35 -0800
From: Andi Kleen <andi@firstfloor.org>
To: Brian Gerst <brgerst@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>,
        Thomas Gleixner <tglx@linutronix.de>,
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        Dave Hansen <dave.hansen@intel.com>,
        Jiri Kosina <jikos@kernel.org>, Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v1 1/8] x86/entry/clearregs: Remove partial stack frame
 in fast system call
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> > execve et.al.: we will be leaking r11(rflags), rcx(orig return) into
> >             the new process. but that seems acceptable.
> 
> We still need to check if we are loading a 32-bit binary.  That must
> return with IRET.

True. Will fix.

-Andi