From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41424) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNfiu-0006S2-S6 for qemu-devel@nongnu.org; Fri, 16 Nov 2018 10:07:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gNfiq-0002Zf-S3 for qemu-devel@nongnu.org; Fri, 16 Nov 2018 10:07:56 -0500 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:57267) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gNfio-0002WS-67 for qemu-devel@nongnu.org; Fri, 16 Nov 2018 10:07:51 -0500 Date: Fri, 16 Nov 2018 10:07:42 -0500 From: "Emilio G. Cota" Message-ID: <20181116150742.GA19283@flamenco> References: <20181112214503.22941-1-richard.henderson@linaro.org> <20181114010014.GA19024@flamenco> <20181115184827.GA12024@flamenco> <06e66024-1abb-e5b7-591c-3633b5cb3e31@linaro.org> <20181116011338.GB17566@flamenco> <20181116051040.GA25165@flamenco> <00eece57-cd7d-f4da-c3ec-6bcfbf82b2f2@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00eece57-cd7d-f4da-c3ec-6bcfbf82b2f2@linaro.org> Subject: Re: [Qemu-devel] [PATCH for-4.0 00/17] tcg: Move softmmu out-of-line List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Henderson Cc: qemu-devel@nongnu.org On Fri, Nov 16, 2018 at 09:07:50 +0100, Richard Henderson wrote: > On 11/16/18 6:10 AM, Emilio G. Cota wrote: > > It's possible that newer machines with larger reorder buffers > > will be able to take better advantage of the higher instruction > > locality, hiding the latency of having to execute more instructions. > > I'll test on Skylake tomorrow. > > I've noticed that the code we generate for calls has twice as many instructions > as really needed for setting up the arguments. I have a plan to fix that, > which hopefully will solve this problem. Ah that's great. I'll do more tests and a full review when those changes come out, then. Thanks, E.