linux-kernel - Re: [PATCH 1/3] x86/xen: Allow XEN_PV and XEN_PVH to be enabled with X86

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Date:   Fri, 16 Feb 2018 06:11:10 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>,
        Borislav Petkov <bp@...e.de>, Andi Kleen <ak@...ux.intel.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] x86/xen: Allow XEN_PV and XEN_PVH to be enabled with
 X86_5LEVEL

On Fri, Feb 16, 2018 at 02:49:46PM +0300, Kirill A. Shutemov wrote:
> @@ -38,12 +38,12 @@
>   *
>   */
>  
> +#define l4_index(x)	(((x) >> 39) & 511)
>  #define pud_index(x)	(((x) >> PUD_SHIFT) & (PTRS_PER_PUD-1))

Shouldn't that be
+#define p4d_index(x)	(((x) >> P4D_SHIFT) & (PTRS_PER_P4D-1))