linux-kernel - Re: [PATCH] x86/ldt: Fix support_pte_mask filtering in map_ldt

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Message-ID: <CALCETrVgQspiO3nnyhqiXi17iaGG7bRDsr3gpHwdDnYfFDZabQ@mail.gmail.com>
Date:   Mon, 16 Apr 2018 08:16:16 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...e.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Joerg Roedel <jroedel@...e.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH] x86/ldt: Fix support_pte_mask filtering in map_ldt_struct()

On Mon, Apr 16, 2018 at 2:43 AM, Joerg Roedel <joro@...tes.org> wrote:
> From: Joerg Roedel <jroedel@...e.de>
>
> The |= operator will let us end up with an invalid PTE. Use
> the correct &= instead.

D'oh!  Looks good.