From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40182) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMjj9-0004Lw-AR for qemu-devel@nongnu.org; Tue, 13 Nov 2018 20:12:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMjXU-0004J1-Sy for qemu-devel@nongnu.org; Tue, 13 Nov 2018 20:00:23 -0500 Received: from out5-smtp.messagingengine.com ([66.111.4.29]:49135) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gMjXU-0004Ix-KG for qemu-devel@nongnu.org; Tue, 13 Nov 2018 20:00:16 -0500 Date: Tue, 13 Nov 2018 20:00:14 -0500 From: "Emilio G. Cota" Message-ID: <20181114010014.GA19024@flamenco> References: <20181112214503.22941-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181112214503.22941-1-richard.henderson@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 Mon, Nov 12, 2018 at 22:44:46 +0100, Richard Henderson wrote: > Based on an idea forwarded by Emilio, which suggests a 5-6% > speed gain is possible. I have not spent too much time > measuring this, as the code size gains are significant. Nice! > I believe that I posted an x86_64-only patch some time ago, > but this now includes i386, aarch64 and arm32. In late > testing I do some failures on i386, for sparc guest. I'll > follow up on that later. The following might be related: I'm seeing segfaults with -smp 8 and beyond when doing bootup+shutdown of an aarch64 guest on an x86-64 host. smp -1 is stable AFAICT. The first commit that shows these crashes is "tcg/i386: Use TCG_TARGET_NEED_LDST_OOL_LABELS", that is f7ec49a51c8 in your tcg-tlb-x86 github branch. Thanks, Emilio