From patchwork Sun Sep 12 23:07:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 1527154 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4H755Z0fWXz9sXV for ; Mon, 13 Sep 2021 09:13:53 +1000 (AEST) Received: from localhost ([::1]:40170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mPYfX-0004G1-JR for incoming@patchwork.ozlabs.org; Sun, 12 Sep 2021 19:13:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34184) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mPYa0-0002KL-Mg; Sun, 12 Sep 2021 19:08:08 -0400 Received: from mail.csgraf.de ([85.25.223.15]:43586 helo=zulu616.server4you.de) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mPYZy-0003IO-8Y; Sun, 12 Sep 2021 19:08:08 -0400 Received: from localhost.localdomain (dynamic-095-117-028-179.95.117.pool.telefonica.de [95.117.28.179]) by csgraf.de (Postfix) with ESMTPSA id 7EC0E60808A0; Mon, 13 Sep 2021 01:08:04 +0200 (CEST) From: Alexander Graf To: QEMU Developers Subject: [PATCH v9 10/11] arm: tcg: Adhere to SMCCC 1.3 section 5.2 Date: Mon, 13 Sep 2021 01:07:56 +0200 Message-Id: <20210912230757.41096-11-agraf@csgraf.de> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20210912230757.41096-1-agraf@csgraf.de> References: <20210912230757.41096-1-agraf@csgraf.de> MIME-Version: 1.0 Received-SPF: pass client-ip=85.25.223.15; envelope-from=agraf@csgraf.de; helo=zulu616.server4you.de 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: Peter Maydell , Eduardo Habkost , Sergio Lopez , Peter Collingbourne , Richard Henderson , Cameron Esfahani , Roman Bolshakov , qemu-arm , Frank Yang , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The SMCCC 1.3 spec section 5.2 says The Unknown SMC Function Identifier is a sign-extended value of (-1) that is returned in the R0, W0 or X0 registers. An implementation must return this error code when it receives: * An SMC or HVC call with an unknown Function Identifier * An SMC or HVC call for a removed Function Identifier * An SMC64/HVC64 call from AArch32 state To comply with these statements, let's always return -1 when we encounter an unknown HVC or SMC call. Signed-off-by: Alexander Graf --- v8 -> v9: - Remove Windows specifics and just comply with SMCCC spec --- target/arm/psci.c | 26 ++------------------------ 1 file changed, 2 insertions(+), 24 deletions(-) diff --git a/target/arm/psci.c b/target/arm/psci.c index 6709e28013..bee4aa8825 100644 --- a/target/arm/psci.c +++ b/target/arm/psci.c @@ -35,7 +35,6 @@ bool arm_is_psci_call(ARMCPU *cpu, int excp_type) * to EL2 or to EL3). */ CPUARMState *env = &cpu->env; - uint64_t param = is_a64(env) ? env->xregs[0] : env->regs[0]; switch (excp_type) { case EXCP_HVC: @@ -52,27 +51,7 @@ bool arm_is_psci_call(ARMCPU *cpu, int excp_type) return false; } - switch (param) { - case QEMU_PSCI_0_2_FN_PSCI_VERSION: - case QEMU_PSCI_0_2_FN_MIGRATE_INFO_TYPE: - case QEMU_PSCI_0_2_FN_AFFINITY_INFO: - case QEMU_PSCI_0_2_FN64_AFFINITY_INFO: - case QEMU_PSCI_0_2_FN_SYSTEM_RESET: - case QEMU_PSCI_0_2_FN_SYSTEM_OFF: - case QEMU_PSCI_0_1_FN_CPU_ON: - case QEMU_PSCI_0_2_FN_CPU_ON: - case QEMU_PSCI_0_2_FN64_CPU_ON: - case QEMU_PSCI_0_1_FN_CPU_OFF: - case QEMU_PSCI_0_2_FN_CPU_OFF: - case QEMU_PSCI_0_1_FN_CPU_SUSPEND: - case QEMU_PSCI_0_2_FN_CPU_SUSPEND: - case QEMU_PSCI_0_2_FN64_CPU_SUSPEND: - case QEMU_PSCI_0_1_FN_MIGRATE: - case QEMU_PSCI_0_2_FN_MIGRATE: - return true; - default: - return false; - } + return true; } void arm_handle_psci_call(ARMCPU *cpu) @@ -194,10 +173,9 @@ void arm_handle_psci_call(ARMCPU *cpu) break; case QEMU_PSCI_0_1_FN_MIGRATE: case QEMU_PSCI_0_2_FN_MIGRATE: + default: ret = QEMU_PSCI_RET_NOT_SUPPORTED; break; - default: - g_assert_not_reached(); } err: