From patchwork Thu Jan 11 11:16:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13517236 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 421DFC4707B for ; Thu, 11 Jan 2024 11:31:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rNtFQ-0007nL-KZ; Thu, 11 Jan 2024 06:29:20 -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 1rNtFK-0007ld-BZ for qemu-devel@nongnu.org; Thu, 11 Jan 2024 06:29:14 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rNtFE-0006rI-7e for qemu-devel@nongnu.org; Thu, 11 Jan 2024 06:29:12 -0500 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxDLsA0Z9lmz8EAA--.4333S3; Thu, 11 Jan 2024 19:29:04 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Bx34f80J9l6+4PAA--.41647S9; Thu, 11 Jan 2024 19:29:03 +0800 (CST) From: Song Gao To: Cc: qemu-devel@nongnu.org, peter.maydell@linaro.org, Tianrui Zhao , xianglai li , Richard Henderson Subject: [PULL 07/14] target/loongarch: Implement kvm_arch_handle_exit Date: Thu, 11 Jan 2024 19:16:02 +0800 Message-Id: <20240111111609.899183-8-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20240111111609.899183-1-gaosong@loongson.cn> References: <20240111111609.899183-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Bx34f80J9l6+4PAA--.41647S9 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Tianrui Zhao Implement kvm_arch_handle_exit for loongarch. In this function, the KVM_EXIT_LOONGARCH_IOCSR is handled, we read or write the iocsr address space by the addr, length and is_write argument in kvm_run. Signed-off-by: Tianrui Zhao Signed-off-by: xianglai li Reviewed-by: Richard Henderson Reviewed-by: Song Gao Message-Id: <20240105075804.1228596-8-zhaotianrui@loongson.cn> Signed-off-by: Song Gao --- target/loongarch/kvm/kvm.c | 24 +++++++++++++++++++++++- target/loongarch/trace-events | 1 + 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index 85e7aeb083..d2dab3fef4 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -723,7 +723,29 @@ bool kvm_arch_cpu_check_are_resettable(void) int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) { - return 0; + int ret = 0; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + MemTxAttrs attrs = {}; + + attrs.requester_id = env_cpu(env)->cpu_index; + + trace_kvm_arch_handle_exit(run->exit_reason); + switch (run->exit_reason) { + case KVM_EXIT_LOONGARCH_IOCSR: + address_space_rw(&env->address_space_iocsr, + run->iocsr_io.phys_addr, + attrs, + run->iocsr_io.data, + run->iocsr_io.len, + run->iocsr_io.is_write); + break; + default: + ret = -1; + warn_report("KVM: unknown exit reason %d", run->exit_reason); + break; + } + return ret; } void kvm_arch_accel_class_init(ObjectClass *oc) diff --git a/target/loongarch/trace-events b/target/loongarch/trace-events index 937c3c7c0c..021839880e 100644 --- a/target/loongarch/trace-events +++ b/target/loongarch/trace-events @@ -11,3 +11,4 @@ kvm_failed_get_counter(const char *msg) "Failed to get counter from KVM: %s" kvm_failed_put_counter(const char *msg) "Failed to put counter into KVM: %s" kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s" kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s" +kvm_arch_handle_exit(int num) "kvm arch handle exit, the reason number: %d"