From patchwork Wed Jan 4 21:58:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabiano Rosas X-Patchwork-Id: 13089179 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 6AB62C46467 for ; Wed, 4 Jan 2023 23:00:01 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pDBqy-0006vB-2w; Wed, 04 Jan 2023 17:03:20 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pDBpX-0005zT-Jj; Wed, 04 Jan 2023 17:01:53 -0500 Received: from smtp-out1.suse.de ([2001:67c:2178:6::1c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pDBpW-0003AE-27; Wed, 04 Jan 2023 17:01:51 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id A2A894D80D; Wed, 4 Jan 2023 22:01:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1672869708; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nQEegwHGNN7Z6VYfpF6X6KbKk1CytmES9LnxfjWls9g=; b=PiInJ9D72kQq5zRX/dr5zcaX/TE5tsx1zaJe8wEi/ZLvaCUquf1YB482wByWXtjNdjmNpp xD3moE7iAa91b6Wm66y+xXCr16BdbA1gVkKZb2ywMoj4Amr3GlQQMtHnUNbpPvzHAeUG9B gMGIKnkLKbi2XwlGKSegQxzn77e8YQk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1672869708; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nQEegwHGNN7Z6VYfpF6X6KbKk1CytmES9LnxfjWls9g=; b=R35fY8W1DssTvFGuxIOW7zunCvqXSDWhRdY1xb1C5gGO7yMs6Lps7nIBrenU4SvIqso7gk 32dE3u5gdODYuQAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id F37881342C; Wed, 4 Jan 2023 22:01:45 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id oLFILkn3tWPwJAAAMHmgww (envelope-from ); Wed, 04 Jan 2023 22:01:45 +0000 From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , =?utf-8?q?Alex_Benn=C3=A9?= =?utf-8?q?e?= , Paolo Bonzini , Claudio Fontana , Eduardo Habkost , Alexander Graf Subject: [RFC PATCH 21/27] target/arm: make further preparation for the exception code to move Date: Wed, 4 Jan 2023 18:58:29 -0300 Message-Id: <20230104215835.24692-22-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230104215835.24692-1-farosas@suse.de> References: <20230104215835.24692-1-farosas@suse.de> MIME-Version: 1.0 Received-SPF: pass client-ip=2001:67c:2178:6::1c; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Claudio Fontana the exception code needs some adjustment before being exposed to KVM-only builds. We need to call arm_rebuild_hflags only when TCG is enabled, or we will error out. The direct call to helper_rebuild_hflags_a64(env, new_el) will not be possible when extracting out to common code, it seems safe to replace it with a call to arm_rebuild_hflags, since the write to pstate is already done. Signed-off-by: Claudio Fontana Signed-off-by: Fabiano Rosas Reviewed-by: Richard Henderson --- target/arm/helper.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index bea1ef242a..a536d77611 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -1131,7 +1131,9 @@ static void take_aarch32_exception(CPUARMState *env, int new_mode, env->regs[14] = env->regs[15] + offset; } env->regs[15] = newpc; - arm_rebuild_hflags(env); + if (tcg_enabled()) { + arm_rebuild_hflags(env); + } } static void arm_cpu_do_interrupt_aarch32_hyp(CPUState *cs) @@ -1687,7 +1689,11 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *cs) pstate_write(env, PSTATE_DAIF | new_mode); env->aarch64 = true; aarch64_restore_sp(env, new_el); - helper_rebuild_hflags_a64(env, new_el); + + if (tcg_enabled()) { + /* pstate already written, so we can use arm_rebuild_hflags here */ + arm_rebuild_hflags(env); + } env->pc = addr;