linux-kernel - Re: [RFC PATCH v4 07/28] x86: Provide general kernel support for memory encryption

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Message-ID: <cd11c396-d5d2-9f06-086e-6d6f54352fa6@intel.com>
Date:   Wed, 22 Feb 2017 10:13:57 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Tom Lendacky <thomas.lendacky@....com>, linux-arch@...r.kernel.org,
        linux-efi@...r.kernel.org, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, iommu@...ts.linux-foundation.org
Cc:     Rik van Riel <riel@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Toshimitsu Kani <toshi.kani@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Joerg Roedel <joro@...tes.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Larry Woodman <lwoodman@...hat.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [RFC PATCH v4 07/28] x86: Provide general kernel support for
 memory encryption

On 02/16/2017 07:43 AM, Tom Lendacky wrote:
> )
> @@ -673,7 +683,7 @@ static inline unsigned long pgd_page_vaddr(pgd_t pgd)
>   * Currently stuck as a macro due to indirect forward reference to
>   * linux/mmzone.h's __section_mem_map_addr() definition:
>   */
> -#define pgd_page(pgd)		pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT)
> +#define pgd_page(pgd)	pfn_to_page(pgd_pfn(pgd))

FWIW, these seem like good cleanups that can go in separately from the
rest of your series.