Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 24 Sep 2019 14:48:19 -0500
From:   Steve Wahl <steve.wahl@hpe.com>
To:     Dave Hansen <dave.hansen@intel.com>
Cc:     Steve Wahl <steve.wahl@hpe.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org,
        Juergen Gross <jgross@suse.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Brijesh Singh <brijesh.singh@amd.com>,
        Jordan Borgner <mail@jordan-borgner.de>,
        Feng Tang <feng.tang@intel.com>, linux-kernel@vger.kernel.org,
        Chao Fan <fanc.fnst@cn.fujitsu.com>,
        Zhenzhong Duan <zhenzhong.duan@oracle.com>,
        Baoquan He <bhe@redhat.com>, russ.anderson@hpe.com,
        dimitri.sivanich@hpe.com, mike.travis@hpe.com
Subject: Re: [PATCH v2 2/2] x86/boot/64: round memory hole size up to next
 PMD page.
Message-ID: <20190924194819.GB8138@swahl-linux>
References: <cover.1569004922.git.steve.wahl@hpe.com>
 <b0c6487fdd8ca33daa2ac1604b60fac8ed5b020f.1569004923.git.steve.wahl@hpe.com>
 <edd60d59-fdfc-2383-6cc8-e084e86e7a37@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <edd60d59-fdfc-2383-6cc8-e084e86e7a37@intel.com>
User-Agent: Mutt/1.12.1 (2019-06-15)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon, Sep 23, 2019 at 02:20:35PM -0700, Dave Hansen wrote:
> On 9/23/19 11:15 AM, Steve Wahl wrote:
> > The kernel image map is created using PMD pages, which can include
> > some extra space beyond what's actually needed.  Round the size of the
> > memory hole we search for up to the next PMD boundary, to be certain
> > all of the space to be mapped is usable RAM and includes no reserved
> > areas.
> 
> This looks good.  It also fully closes any possibility that anyone's
> future hardware will hit issues like this as long as they mark the
> memory reserved, right?

I believe that is true.  Thanks!

> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>

--> Steve Wahl

-- 
Steve Wahl, Hewlett Packard Enterprise