From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:37952)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <aarcange@redhat.com>) id 1avRvx-0005Ep-BL
	for qemu-devel@nongnu.org; Wed, 27 Apr 2016 12:03:26 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <aarcange@redhat.com>) id 1avRvr-00020u-Se
	for qemu-devel@nongnu.org; Wed, 27 Apr 2016 12:03:25 -0400
Received: from mx1.redhat.com ([209.132.183.28]:38885)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <aarcange@redhat.com>) id 1avRvr-00020M-O2
	for qemu-devel@nongnu.org; Wed, 27 Apr 2016 12:03:19 -0400
Date: Wed, 27 Apr 2016 18:03:17 +0200
From: Andrea Arcangeli <aarcange@redhat.com>
Message-ID: <20160427160317.GC11700@redhat.com>
References: <1461758686-27157-1-git-send-email-aarcange@redhat.com>
	<20160427135030.GB22035@node.shutemov.name>
	<20160427145957.GA9217@redhat.com>
	<20160427151834.GC22035@node.shutemov.name>
	<20160427155730.GB11700@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20160427155730.GB11700@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 1/1] mm: thp: kvm: fix memory corruption in
 KVM with THP enabled
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel/>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, "Li, Liang Z" <liang.z.li@intel.com>, Amit Shah <amit.shah@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>

On Wed, Apr 27, 2016 at 05:57:30PM +0200, Andrea Arcangeli wrote:
> couldn't do a fix as cleaner as this one for 4.6.

ehm "cleaner then"

If you've suggestions for a better name than PageTransCompoundMap I
can respin a new patch though, I considered "CanMap" but I opted for
the short version.

Also I'm not really sure moving transparent_hugepage_adjust will make
much sense. I mentioned it because Andres in another thread said it
was suggested but the real common code knowledge is about
PageTransCompoundMap only, all sort of !mmu_gfn_lpage_is_disallowed
for dirty logging at 4k shadow granularity is KVM internal.