linux-kernel - Re: [RFC] selftests/x86: Add test

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Message-ID: <20180105192845.32ucll64aa34cf7w@pd.tnic>
Date:   Fri, 5 Jan 2018 20:28:45 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Andy Lutomirski <luto@...nel.org>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [RFC] selftests/x86: Add test_vsyscall

On Fri, Jan 05, 2018 at 11:22:21AM -0800, Andy Lutomirski wrote:
> It's emulated!  We catch the page fault and fake the whole thing :)

Then I'm really confused. It says "ro" above, which means _PAGE_RW is
not set so page is read-only.

I must be missing something...

-- 
Regards/Gruss,
    Boris.

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