linux-kernel - Re: [PATCH v7 11/12] x86/paravirt: Adapt assembly for PIE support

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Message-ID: <CAJcbSZF1xcMpLDrOLkh493+ciVUqrku9WkWdb5xxAqWuXMjGZw@mail.gmail.com>
Date:   Wed, 29 May 2019 08:48:32 -0700
From:   Thomas Garnier <thgarnie@...omium.org>
To:     Juergen Gross <jgross@...e.com>
Cc:     Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        Kristen Carlson Accardi <kristen@...ux.intel.com>,
        Alok Kataria <akataria@...are.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        virtualization@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 11/12] x86/paravirt: Adapt assembly for PIE support

On Sun, May 26, 2019 at 10:47 PM Juergen Gross <jgross@...e.com> wrote:
>
> On 21/05/2019 01:19, Thomas Garnier wrote:
> > From: Thomas Garnier <thgarnie@...gle.com>
> >
> > if PIE is enabled, switch the paravirt assembly constraints to be
> > compatible. The %c/i constrains generate smaller code so is kept by
> > default.
> >
> > Position Independent Executable (PIE) support will allow to extend the
> > KASLR randomization range below 0xffffffff80000000.
> >
> > Signed-off-by: Thomas Garnier <thgarnie@...gle.com>
>
> Acked-by: Juergen Gross <jgross@...e.com>

Thanks Juergen.

>
>
> Juergen