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Date: Mon, 9 Mar 2015 16:13:55 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
        Denys Vlasenko <dvlasenk@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Steven Rostedt <rostedt@goodmis.org>, Borislav Petkov <bp@alien8.de>,
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        Kees Cook <keescook@chromium.org>, X86 ML <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: entry_32.S: change ESPFIX test to not touch
 PT_OLDSS(%esp)
Message-ID: <20150309151355.GA21109@gmail.com>
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* Denys Vlasenko <vda.linux@googlemail.com> wrote:

> > That being said, what ends up in the high bits of esp when we iret 
> > to vm86 mode?
> 
> I don't know. I guess it's time to write an actual vm86 testcase :)

Btw., could you please stick it and your other testcases into 
tools/x86/tests/ or so? Having such a testsuite would ease maintenance 
considerably.

Thanks,

	Ingo