From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52220) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dGWCD-0003Le-7z for qemu-devel@nongnu.org; Thu, 01 Jun 2017 15:55:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dGWC9-0006Lr-VX for qemu-devel@nongnu.org; Thu, 01 Jun 2017 15:55:49 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:44525) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dGWC9-0006LK-NC for qemu-devel@nongnu.org; Thu, 01 Jun 2017 15:55:45 -0400 Date: Thu, 1 Jun 2017 15:55:44 -0400 From: "Emilio G. Cota" Message-ID: <20170601195544.GB10517@flamenco> References: <148434048970.31446.17153056211582691244.stgit@frigg.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <148434048970.31446.17153056211582691244.stgit@frigg.lan> Subject: Re: [Qemu-devel] [PATCH v7 0/7] trace: [tcg] Optimize per-vCPU tracing states with separate TB caches List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?iso-8859-1?Q?Llu=EDs?= Vilanova Cc: qemu-devel@nongnu.org, Eduardo Habkost , Stefan Hajnoczi , Richard Henderson On Fri, Jan 13, 2017 at 21:48:09 +0100, Lluís Vilanova wrote: (snip) > To handle both issues, this series integrates the dynamic tracing event state > into the TB hashing function, so that vCPUs tracing different events will use > separate TBs. Note that only events with the 'vcpu' property are used for > hashing (as stored in the bitmap of CPUState->trace_dstate). Is this going to be picked up by anyone? AFAICT the patchset is close to being merge-ready. Lluís: I'm very interested in your instrumentation work [1]: - How much up to date are the branches in [1]? I couldn't find this v7 iteration in there, although maybe I didn't look carefully enough. - Are you planning on upstreaming it? I have some time to help with that if you're interested. - Do you have instrumentation examples beyond what's in docs/instrumentation.txt? In particular I'd like to see how the basic block (BBL) instrumentation works, i.e. how a 'skeleton' simulator would work to decode the guest instructions and also track their dependences. Thanks, Emilio [1] https://projects.gso.ac.upc.edu/projects/qemu-dbi