From nobody Mon Sep 15 18:12:04 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=ispras.ru ARC-Seal: i=1; a=rsa-sha256; t=1601377377; cv=none; d=zohomail.com; s=zohoarc; b=P54zmRUtstFzbf0cGXODztH3kEYwQqzEvZWOJP/g+rxyEQUHPblhK+h823kaBclHfCiJHL14Q0LBu91OybKcMm+iIKcnW7gKmuRKMjYHcG6+Q2VOvXwF+M4Cr6LnR3vNxM5r2ICCvtl13fUbKOGFUTkLsg0POeqt95FUqaR5M5Q= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1601377377; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=tZYDTqQ3+lXorWyhyC+2zlkyN2BH7RDL1TBDw/wvHjs=; b=OeLZtA16hyM7NAnSgbka781kc0lEDRaATwDU82uJP7QS7NBGpnxFLdFrsc5T8MtKdy7ZXIzjY7LBb4a9SwW41ahiMtdy3irO957L8zMWacFBlmyaa3kJdEAqGrFejeHWzbLwQPpb/DGAwicQw/JZ9/A2mLGxetGZ6bSvqnoaVdM= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1601377377567312.95690687636545; Tue, 29 Sep 2020 04:02:57 -0700 (PDT) Received: from localhost ([::1]:38116 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNDPL-0003y9-Hc for importer@patchew.org; Tue, 29 Sep 2020 07:02:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56588) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNDNn-0002SQ-9I for qemu-devel@nongnu.org; Tue, 29 Sep 2020 07:01:19 -0400 Received: from mail.ispras.ru ([83.149.199.84]:35038) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNDNg-0002Zb-PB for qemu-devel@nongnu.org; Tue, 29 Sep 2020 07:01:18 -0400 Received: from [127.0.1.1] (unknown [62.118.151.149]) by mail.ispras.ru (Postfix) with ESMTPSA id 96048413C33E; Tue, 29 Sep 2020 11:01:10 +0000 (UTC) Subject: [PATCH v6 01/14] replay: don't record interrupt poll From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Tue, 29 Sep 2020 14:01:10 +0300 Message-ID: <160137727030.31007.8507949116622549670.stgit@pasha-ThinkPad-X280> In-Reply-To: <160137726426.31007.12061315974029139983.stgit@pasha-ThinkPad-X280> References: <160137726426.31007.12061315974029139983.stgit@pasha-ThinkPad-X280> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=83.149.199.84; envelope-from=pavel.dovgalyuk@ispras.ru; helo=mail.ispras.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/29 07:01:05 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] 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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, wrampazz@redhat.com, pavel.dovgalyuk@ispras.ru, ehabkost@redhat.com, alex.bennee@linaro.org, mtosatti@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, crosa@redhat.com, pbonzini@redhat.com, philmd@redhat.com, zhiwei_liu@c-sky.com, rth@twiddle.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Interrupt poll is not a real interrupt event. It is needed only for thread safety. This interrupt is used for i386 and converted to hardware interrupt by cpu_handle_interrupt function. Therefore it is not needed to be recorded, because hardware interrupt will be recorded after converting. Signed-off-by: Pavel Dovgalyuk Reviewed-by: Alex Benn=C3=A9e Reviewed-by: Philippe Mathieu-Daud=C3=A9 -- v4 changes: - Condition check refactoring (suggested by Alex Benn=C3=A9e) --- accel/tcg/cpu-exec.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index e10b46283c..a2b913c72f 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -430,8 +430,7 @@ static inline bool cpu_handle_halt(CPUState *cpu) { if (cpu->halted) { #if defined(TARGET_I386) && !defined(CONFIG_USER_ONLY) - if ((cpu->interrupt_request & CPU_INTERRUPT_POLL) - && replay_interrupt()) { + if (cpu->interrupt_request & CPU_INTERRUPT_POLL) { X86CPU *x86_cpu =3D X86_CPU(cpu); qemu_mutex_lock_iothread(); apic_poll_irq(x86_cpu->apic_state); @@ -527,6 +526,20 @@ static inline bool cpu_handle_exception(CPUState *cpu,= int *ret) return false; } =20 +/* + * CPU_INTERRUPT_POLL is a virtual event which gets converted into a + * "real" interrupt event later. It does not need to be recorded for + * replay purposes. + */ +static inline bool need_replay_interrupt(int interrupt_request) +{ +#if defined(TARGET_I386) + return !(interrupt_request & CPU_INTERRUPT_POLL); +#else + return true; +#endif +} + static inline bool cpu_handle_interrupt(CPUState *cpu, TranslationBlock **last_tb) { @@ -588,7 +601,9 @@ static inline bool cpu_handle_interrupt(CPUState *cpu, and via longjmp via cpu_loop_exit. */ else { if (cc->cpu_exec_interrupt(cpu, interrupt_request)) { - replay_interrupt(); + if (need_replay_interrupt(interrupt_request)) { + replay_interrupt(); + } /* * After processing the interrupt, ensure an EXCP_DEBUG is * raised when single-stepping so that GDB doesn't miss the