From patchwork Mon Jan 31 11:25:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Dovgalyuk X-Patchwork-Id: 12730598 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3583CC433F5 for ; Mon, 31 Jan 2022 12:12:53 +0000 (UTC) Received: from localhost ([::1]:59298 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nEVYC-0007ma-6u for qemu-devel@archiver.kernel.org; Mon, 31 Jan 2022 07:12:52 -0500 Received: from eggs.gnu.org ([209.51.188.92]:37502) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEUp5-0004M2-UH for qemu-devel@nongnu.org; Mon, 31 Jan 2022 06:26:16 -0500 Received: from mail.ispras.ru ([83.149.199.84]:58310) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEUoi-0007fU-La for qemu-devel@nongnu.org; Mon, 31 Jan 2022 06:25:54 -0500 Received: from [127.0.1.1] (unknown [85.142.117.226]) by mail.ispras.ru (Postfix) with ESMTPSA id BC6C240D3BFF; Mon, 31 Jan 2022 11:25:40 +0000 (UTC) Subject: [PATCH] replay: use CF_NOIRQ for special exception-replaying TB From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Mon, 31 Jan 2022 14:25:40 +0300 Message-ID: <164362834054.1754532.7678416881159817273.stgit@pasha-ThinkPad-X280> User-Agent: StGit/0.23 MIME-Version: 1.0 Received-SPF: pass client-ip=83.149.199.84; envelope-from=pavel.dovgalyuk@ispras.ru; helo=mail.ispras.ru X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, pbonzini@redhat.com, pavel.dovgalyuk@ispras.ru Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Commit aff0e204cb1f1c036a496c94c15f5dfafcd9b4b4 introduced CF_NOIRQ usage, but one case was forgotten. Record/replay uses one special TB which is not really executed, but used to cause a correct exception in replay mode. This patch adds CF_NOIRQ flag for such block. Signed-off-by: Pavel Dovgalyuk Reviewed-by: Richard Henderson --- accel/tcg/cpu-exec.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 6dcff3618c..5962f158dc 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -648,7 +648,8 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret) if (replay_has_exception() && cpu_neg(cpu)->icount_decr.u16.low + cpu->icount_extra == 0) { /* Execute just one insn to trigger exception pending in the log */ - cpu->cflags_next_tb = (curr_cflags(cpu) & ~CF_USE_ICOUNT) | 1; + cpu->cflags_next_tb = (curr_cflags(cpu) & ~CF_USE_ICOUNT) + | CF_NOIRQ | 1; } #endif return false;