From patchwork Mon May 28 19:48:12 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 921682 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40vnW16Fk7z9s15 for ; Tue, 29 May 2018 05:49:32 +1000 (AEST) Received: from localhost ([::1]:57617 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fNO91-0007M1-Km for incoming@patchwork.ozlabs.org; Mon, 28 May 2018 15:49:27 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54252) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fNO8Z-0007Lg-LP for qemu-devel@nongnu.org; Mon, 28 May 2018 15:49:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fNO8W-0006QB-HC for qemu-devel@nongnu.org; Mon, 28 May 2018 15:48:59 -0400 Received: from mout.kundenserver.de ([217.72.192.75]:51535) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fNO8W-0006Oo-7Y for qemu-devel@nongnu.org; Mon, 28 May 2018 15:48:56 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue102 [212.227.15.183]) with ESMTPSA (Nemesis) id 0M4qhJ-1gFb8u0dkT-00z2Jv; Mon, 28 May 2018 21:48:41 +0200 From: Laurent Vivier To: Mark Cave-Ayland , qemu-devel@nongnu.org Date: Mon, 28 May 2018 21:48:12 +0200 Message-Id: <20180528194812.31216-1-laurent@vivier.eu> X-Mailer: git-send-email 2.14.3 X-Provags-ID: V03:K1:sPi8mvTN0IBatx7YwrpTCihppHH3nMEByICrzHIsRLrbmFivPIw qEX+wGcIQuQpZYJif5guLDo2ldkbf9UIkGdMrNgrh9ptpGIyyFroHhuJKYCH3KLE7m7z7mt nRoGN0v2F1QdxPW4+wenm2SLWmcm5csG1bcy2Cxa9XCcJyFIlV5vjfFh7CNBVkw5ssxG1UO +NST1WFGOipJNjsJ7dAog== X-UI-Out-Filterresults: notjunk:1; V01:K0:mQPlSc3P1uE=:MjEvoiEZpjcLq7vF2DyJFJ aPDGuVZcNPw0QRkajqUoBP1kfpKSJ3bFjzeBBXfgV/8ZpLupeAkGczmP7j0zcWq1CCtV8/ZqV clIeYnBD4SWoTH6pC8Jj8AZCLmUeiTnBsprP1Y6UanF9dGTxhrdWkpQZyhe9RKTXrDZXTVuFA C1wsViNBzD9/a2VnnmUOg+9VNgPXntfz92aVW0Zyo3cZl++3B/LAyKJmEwwmX3xnooS490+h2 CM8OXPtRIhW7nKqfjPJPQgbd9kOO0SLXiqR1xWHtRD87W8fO3FFGPjx1+4Bf7A+Eo9w2DjDri KebHrr2X4FJBxHb4gysWyM5YoUys+qYMB66xYqf/L9D1x6nsRsL61AmOjfRaES1mqi9JJsyZR 2PEFT3X0qpASpc8SW1LLnqIm15LqU6cZqovttCo2Tr67LSPOxBrv+wU3m4X7qklGKC0TiFr2W iUA3HUMV0zWGiyUieSeQGXhxG4+kLb6s2olZOdS6Gc89uJIYolfnUSWtLXymImmeb4WiCPpN6 ObaAG39P8ktA/FKvYU1SDx9mO1+PEzFLOxQ9hLPa1B+4pU/U4EJ1ssU+UJfsaBjO0Qe+gQ3op xiQRPjpbZWp9icmcgAInQGs9//tzYoHFkCDfGAZseEM6ASi3sGFpa6Cc5cx4K6p/g2KQniWZm mILgErxmD4wrS2LE6+Ur5BtWKbxGdD3srcVcgEt7msTfC9DuCcJT/XR99De6Vv3rMGx0= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 217.72.192.75 Subject: [Qemu-devel] [PATCH] linux-user: SPARC "rd %tick" can be used by user application X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Riku Voipio , Laurent Vivier , Artyom Tarasenko Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" we have the same problem decribed in 7d6b1daedd ("linux-user, ppc: mftbl can be used by user application") for ppc in the case of sparc. When we use an application trying to resolve a name, it hangs in 0x00000000ff5dd40c: rd %tick, %o5 0x00000000ff5dd410: srlx %o5, 0x20, %o4 0x00000000ff5dd414: btst %o5, %g4 0x00000000ff5dd418: be %icc, 0xff5dd40c because %tick is staying at 0. As QEMU_CLOCK_VIRTUAL is not available in linux-user mode, simply use cpu_get_host_ticks() instead. Signed-off-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé --- target/sparc/helper.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/target/sparc/helper.c b/target/sparc/helper.c index 1d854890b4..46232788c8 100644 --- a/target/sparc/helper.c +++ b/target/sparc/helper.c @@ -67,7 +67,9 @@ uint64_t helper_tick_get_count(CPUSPARCState *env, void *opaque, int mem_idx) return cpu_tick_get_count(timer); #else - return 0; + /* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist. + Just pass through the host cpu clock ticks. */ + return cpu_get_host_ticks(); #endif }