From patchwork Mon Oct 9 09:01:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13413112 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 AE2FCE95A8E for ; Mon, 9 Oct 2023 09:03:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qpmA3-0002Ka-BD; Mon, 09 Oct 2023 05:02:47 -0400 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 1qpm9p-0002EW-Tb for qemu-devel@nongnu.org; Mon, 09 Oct 2023 05:02:35 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qpm9h-00061l-FQ for qemu-devel@nongnu.org; Mon, 09 Oct 2023 05:02:33 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8BxIvCYwSNlpD0wAA--.26324S3; Mon, 09 Oct 2023 17:02:16 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dx_y+TwSNlDW4cAA--.59991S9; Mon, 09 Oct 2023 17:02:15 +0800 (CST) From: xianglai li To: qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: Tianrui Zhao , "Michael S. Tsirkin" , Cornelia Huck , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , Peter Maydell , Bibo Mao , Song Gao , Xiaojuan Yang Subject: [PATCH RFC v4 7/9] target/loongarch: Implement kvm_arch_handle_exit Date: Mon, 9 Oct 2023 17:01:35 +0800 Message-Id: <9b00fe7a7f28121e6f446350d063063db9fa7a2f.1696841645.git.lixianglai@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Dx_y+TwSNlDW4cAA--.59991S9 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=lixianglai@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 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. Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: Paolo Bonzini Cc: "Marc-André Lureau" Cc: "Daniel P. Berrangé" Cc: Thomas Huth Cc: "Philippe Mathieu-Daudé" Cc: Richard Henderson Cc: Peter Maydell Cc: Bibo Mao Cc: Song Gao Cc: Xiaojuan Yang Cc: Tianrui Zhao Signed-off-by: Tianrui Zhao Reviewed-by: Richard Henderson Signed-off-by: xianglai li --- target/loongarch/kvm.c | 24 +++++++++++++++++++++++- target/loongarch/trace-events | 1 + 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/target/loongarch/kvm.c b/target/loongarch/kvm.c index 9754478e34..0fe52434ed 100644 --- a/target/loongarch/kvm.c +++ b/target/loongarch/kvm.c @@ -549,7 +549,29 @@ 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 f801ad7c76..6cce653b20 100644 --- a/target/loongarch/trace-events +++ b/target/loongarch/trace-events @@ -13,3 +13,4 @@ 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"