From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57507) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOwqu-0008Qd-Kh for qemu-devel@nongnu.org; Fri, 01 Jun 2018 23:05:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fOwqq-0008NL-Lm for qemu-devel@nongnu.org; Fri, 01 Jun 2018 23:05:12 -0400 Received: from mx1.riseup.net ([198.252.153.129]:38325) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fOwqq-0008Mu-Ah for qemu-devel@nongnu.org; Fri, 01 Jun 2018 23:05:08 -0400 References: <40602400-cae4-e175-e7ce-10ac70ba52f5@riseup.net> <20180601113444.GG8687@stefanha-x1.localdomain> <20180601184855-mutt-send-email-mst@kernel.org> <20180601185429.GB2532@work-vm> From: procmem Message-ID: Date: Sat, 2 Jun 2018 03:04:48 +0000 MIME-Version: 1.0 In-Reply-To: <20180601185429.GB2532@work-vm> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Virtio-net drivers immune to Nethammer? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" , "Michael S. Tsirkin" Cc: Stefan Hajnoczi , jasowang@redhat.com, qemu-devel@nongnu.org, whonix-devel@whonix.org Dr. David Alan Gilbert: > Isn't the idea to misuse CAT to detect something about access patterns; > so it's not about it actually being related? AFAICT, CAT is directly responsible since the way it interacts with the cache allows it to introduce predictable bit flips that can wreak all kinds of havoc.