Received: by 2002:a05:6358:11c7:b0:104:8066:f915 with SMTP id i7csp627276rwl; Wed, 12 Apr 2023 01:34:04 -0700 (PDT) X-Google-Smtp-Source: AKy350YsPcRSRrdFStXB8S5TvFcPL2cOGs4rBUEj7IAIutDMeVUCWL4GioXkWc2+NE6e9kLVB/fj X-Received: by 2002:a17:906:9519:b0:94a:5402:da29 with SMTP id u25-20020a170906951900b0094a5402da29mr5235615ejx.19.1681288443851; Wed, 12 Apr 2023 01:34:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681288443; cv=none; d=google.com; s=arc-20160816; b=qbmKMaPbqTHW1wU9Gye+8lc3YOwFBLTroBGib9YtUtrXS50RAKO25V8VqOzglxPvf8 mLxlcEoZ048YO1FhyzrOGaP3KF2txZlBwpBrnpbAPs6xq7kw+y3tVhk0RkkzixMlCoNB QYcPgj9Zio11gtvyWy00alKsrraJODxl6tlZALdIfN8JiNxnlt7TT8ba/9mZHT9zW+f/ wsT65Dj7hBWDlSeaOrN/fjkZit36Cc13MmspWPfjOh+8BJyfsl3omfielE6W9hKL7qnL 7bPwcP1NQmQCmTiODyx5Br39u26wcce4mRomt8BJ/+GABa2D/JQ0iIyYKD4pV4aPGmuA c9Rg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=nCJgfVABFWUlAuDEQMAR9MsjQRNW+9JtueoOsyXNMLY=; b=AuwSrg7JuN4cVCKcWKVgBo1r3qKUZcIqXr4ZJfQ+hMWj/sPRdJSet0dls3EGgwnD4q fuZp5QW0e1xj1kT1tePEi3RmzOW/QR2Vglje6MVHtClhXECCDXRpgLckAuZgSr7YEkTU s0J3VmOHBKP39I+tow00sM+0ZagsoAemrvE3PGRR62nW8yLECZi79YBqUXMbdXL2tM4W /gQTy5uw7xmkaGW8yfQU49ja6tqxMaaPoGqIte5Oa55DwVkhXTQDeN3FsMGiiaNJBO8F 6qnJrf5kOgqJ3YaR7D23pomkB2CJp9/zljUuFwQnPXebKu91RlxoCDqpg9QjBzVyAPdz hyMQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id cw9-20020a170906478900b0094a6f4da291si2128014ejc.421.2023.04.12.01.33.39; Wed, 12 Apr 2023 01:34:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230368AbjDLIcL (ORCPT + 99 others); Wed, 12 Apr 2023 04:32:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230252AbjDLIb3 (ORCPT ); Wed, 12 Apr 2023 04:31:29 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C722C7680; Wed, 12 Apr 2023 01:30:41 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8DxUOUvbDZkJSIbAA--.41998S3; Wed, 12 Apr 2023 16:30:39 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxC74fbDZkdKwgAA--.35751S30; Wed, 12 Apr 2023 16:30:39 +0800 (CST) From: Tianrui Zhao To: Paolo Bonzini Cc: Huacai Chen , WANG Xuerui , Greg Kroah-Hartman , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Jens Axboe , Mark Brown , Alex Deucher , Oliver Upton , maobibo@loongson.cn, Xi Ruoyao , zhaotianrui@loongson.cn Subject: [PATCH v6 28/30] LoongArch: KVM: Implement probe virtualization when loongarch cpu init Date: Wed, 12 Apr 2023 16:30:21 +0800 Message-Id: <20230412083023.1693910-29-zhaotianrui@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230412083023.1693910-1-zhaotianrui@loongson.cn> References: <20230412083023.1693910-1-zhaotianrui@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: AQAAf8DxC74fbDZkdKwgAA--.35751S30 X-CM-SenderInfo: p2kd03xldq233l6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjvJXoW7Zw1fCFWfZw1DGr1DXw1UWrg_yoW8tFyDpr W2vFW3trWUKr92ga93Gr1agrnxtFWkKa129F47ta1fAr4Ut3W5Xwn3C34UCFs7Zw4xAryr Xrn7A3WvqF1DX3JanT9S1TB71UUUUjJqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b4AFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wA2ocxC64kIII0Yj41l84x0c7CEw4 AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF 7I0E14v26r4UJVWxJr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6x kF7I0E14v26F4UJVW0owAaw2AFwI0_JF0_Jw1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAq jxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E74AGY7Cv6c x26rWlOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxkF7I0En4kS14v26r12 6r1DMxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1sIEY20_WwCFx2IqxVCFs4IE7xkEbV WUJVW8JwCFI7km07C267AKxVWUAVWUtwC20s026c02F40E14v26r1j6r18MI8I3I0E7480 Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7 IYx2IY67AKxVWDJVCq3wCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr1j6F4UJwCI42IY6I8E87Iv6x kF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7xRiTKZJUUUUU== X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement probe virtualization when loongarch cpu init, including guest gid info, guest fpu info, etc. Signed-off-by: Tianrui Zhao --- arch/loongarch/kernel/cpu-probe.c | 53 +++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/arch/loongarch/kernel/cpu-probe.c b/arch/loongarch/kernel/cpu-probe.c index 3a3fce2d7846..9c3483d9a131 100644 --- a/arch/loongarch/kernel/cpu-probe.c +++ b/arch/loongarch/kernel/cpu-probe.c @@ -176,6 +176,57 @@ static void cpu_probe_common(struct cpuinfo_loongarch *c) } } +static inline void cpu_probe_guestinfo(struct cpuinfo_loongarch *c) +{ + unsigned long guestinfo; + + guestinfo = read_csr_gstat(); + if (guestinfo & CSR_GSTAT_GIDBIT) { + c->options |= LOONGARCH_CPU_GUESTID; + write_csr_gstat(0); + } +} + +static inline void cpu_probe_lvz(struct cpuinfo_loongarch *c) +{ + unsigned long gcfg, gprcfg1; + + cpu_probe_guestinfo(c); + + c->guest.options |= LOONGARCH_CPU_FPU; + c->guest.options_dyn |= LOONGARCH_CPU_FPU; + c->guest.options_dyn |= LOONGARCH_CPU_PMP; + + c->guest.ases |= LOONGARCH_CPU_LSX; + c->guest.ases_dyn |= LOONGARCH_CPU_LSX; + gprcfg1 = read_gcsr_prcfg1(); + c->guest.kscratch_mask = GENMASK((gprcfg1 & CSR_CONF1_KSNUM) - 1, 0); + + gcfg = read_csr_gcfg(); + if (gcfg & CSR_GCFG_MATP_GUEST) + c->guest_cfg |= BIT(0); + if (gcfg & CSR_GCFG_MATP_ROOT) + c->guest_cfg |= BIT(1); + if (gcfg & CSR_GCFG_MATP_NEST) + c->guest_cfg |= BIT(2); + if (gcfg & CSR_GCFG_SITP) + c->guest_cfg |= BIT(6); + if (gcfg & CSR_GCFG_TITP) + c->guest_cfg |= BIT(8); + if (gcfg & CSR_GCFG_TOEP) + c->guest_cfg |= BIT(10); + if (gcfg & CSR_GCFG_TOPP) + c->guest_cfg |= BIT(12); + if (gcfg & CSR_GCFG_TORUP) + c->guest_cfg |= BIT(14); + if (gcfg & CSR_GCFG_GCIP_ALL) + c->guest_cfg |= BIT(16); + if (gcfg & CSR_GCFG_GCIP_HIT) + c->guest_cfg |= BIT(17); + if (gcfg & CSR_GCFG_GCIP_SECURE) + c->guest_cfg |= BIT(18); +} + #define MAX_NAME_LEN 32 #define VENDOR_OFFSET 0 #define CPUNAME_OFFSET 9 @@ -289,6 +340,8 @@ void cpu_probe(void) if (cpu == 0) __ua_limit = ~((1ull << cpu_vabits) - 1); #endif + if (cpu_has_lvz) + cpu_probe_lvz(c); cpu_report(); } -- 2.31.1