From patchwork Tue Apr 4 09:01:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saurabh Singh Sengar X-Patchwork-Id: 78939 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2881604vqo; Tue, 4 Apr 2023 02:09:03 -0700 (PDT) X-Google-Smtp-Source: AKy350YWqS4o0wA0siMx1VjiJiYfwNV0LtqIBSLpuL319D6BL21VFQziECmVhwlvhhHKOsxNpC0t X-Received: by 2002:a17:90b:1c91:b0:234:d78:9b4c with SMTP id oo17-20020a17090b1c9100b002340d789b4cmr2053185pjb.18.1680599343452; Tue, 04 Apr 2023 02:09:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680599343; cv=none; d=google.com; s=arc-20160816; b=FnKG4SzUgtKyPUpGBIWEeega17DxWwFeM8ifRdWkoS+BdGkvswdhb5nqLFBEwwH2fg uRGfAJbcuVHoKdgrU+310IYRWU+6FYiVkrbyQAlch14HobnZdHie36Qb6iAwSTaJyZe3 +82viHvlvrIF5tyPlsG8g70lCBUHllpZureQxqm3qXWuo8dRAZdKzYgEILj9z/8wMjDk WurS2z0XV/o/LlVneFgciBJTKNLLlSjRQyruX5IaLEiqmpCbBKaWfX1yjduFLHjkn1bv wMv+fQhihBN4pJmpE/FMQQMvoMirA9QjZPMXzqyY+m7Yf/Ei503EiSKFI9DkPv/zWdRc geiQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :to:from:dkim-signature:dkim-filter; bh=sYN20W6hPtwdUe2Zl//cBVNvF4+/oIZeshaAhbV6svU=; b=LXlq/3OWgrU01c9Eg31PJ9KEH7jTNfvaMcZdWb486zdGvhOUtZTwttj0OT3+oxonsC AGO0kW23M4cZo8EB0rpjr3nEJ48neTaoS9yFG9eqsKj6DUk6vK470qRZoB76w7cE6zLx ScXtzqsQ51RrXmH9rZFAdZ3fHPayZ2qxp03AxGcD+4xAwvFzjPOm57kW2JXOQXASSb4Z Vx0u4mXopkXvSwDuHI5Ajej7Grcb4zksHq0jmrPRtvIsTreyFvnwFTLTCfcOuINiu66J TJjs8AEWpsbVnPm1zeXw4DA2eJNmX9POYE3Vb4P2QSBTwoUasSXirVkp1rVc97kWzkNA pbCg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=c24aht4+; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id ob2-20020a17090b390200b0022bb71938casi15030034pjb.50.2023.04.04.02.08.51; Tue, 04 Apr 2023 02:09:03 -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; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=c24aht4+; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234159AbjDDJBN (ORCPT + 99 others); Tue, 4 Apr 2023 05:01:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233699AbjDDJBK (ORCPT ); Tue, 4 Apr 2023 05:01:10 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B8C081FF2; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 0F2A2210DD89; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 0F2A2210DD89 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680598869; bh=sYN20W6hPtwdUe2Zl//cBVNvF4+/oIZeshaAhbV6svU=; h=From:To:Subject:Date:In-Reply-To:References:From; b=c24aht4+rgL1vFOc6GlSj4vkyDCbYylqmnNBwQq8UWB2LY0NjGfwKhg8cUfsoSwjq CC5oOOk4GH6M+BpJaTfLaNVUTbwsjeKRBsZU3L93UBD4yHzDmX8gMY6oLgk+7z3XBO 1H9BaW9zObxI9Y1SEFeSDC03nsb5bjCt0KBQqNSU= From: Saurabh Sengar To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, arnd@arndb.de, tiala@microsoft.com, mikelley@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org, jgross@suse.com, mat.jonczyk@o2.pl Subject: [PATCH v4 1/5] x86/init: Make get/set_rtc_noop() public Date: Tue, 4 Apr 2023 02:01:00 -0700 Message-Id: <1680598864-16981-2-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> References: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> X-Spam-Status: No, score=-17.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762236136996518633?= X-GMAIL-MSGID: =?utf-8?q?1762236136996518633?= Make get/set_rtc_noop() to be public so that they can be used in other modules as well. Co-developed-by: Tianyu Lan Signed-off-by: Tianyu Lan Signed-off-by: Saurabh Sengar Reviewed-by: Wei Liu Reviewed-by: Michael Kelley --- arch/x86/include/asm/x86_init.h | 2 ++ arch/x86/kernel/x86_init.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index acc20ae4079d..88085f369ff6 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -330,5 +330,7 @@ extern void x86_init_uint_noop(unsigned int unused); extern bool bool_x86_init_noop(void); extern void x86_op_int_noop(int cpu); extern bool x86_pnpbios_disabled(void); +extern int set_rtc_noop(const struct timespec64 *now); +extern void get_rtc_noop(struct timespec64 *now); #endif diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 95be3831df73..d82f4fa2f1bf 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -33,8 +33,8 @@ static int __init iommu_init_noop(void) { return 0; } static void iommu_shutdown_noop(void) { } bool __init bool_x86_init_noop(void) { return false; } void x86_op_int_noop(int cpu) { } -static __init int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; } -static __init void get_rtc_noop(struct timespec64 *now) { } +int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; } +void get_rtc_noop(struct timespec64 *now) { } static __initconst const struct of_device_id of_cmos_match[] = { { .compatible = "motorola,mc146818" }, From patchwork Tue Apr 4 09:01:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saurabh Singh Sengar X-Patchwork-Id: 78943 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2882297vqo; Tue, 4 Apr 2023 02:10:18 -0700 (PDT) X-Google-Smtp-Source: AKy350b2H4hagjOnPBBCp7lLiGaVwWBRtX1ifJVRj5Be3IJOg6NSRCC7qTP/c/pJfVgvVsPskHfD X-Received: by 2002:a17:90b:1d8e:b0:23f:7666:c8a1 with SMTP id pf14-20020a17090b1d8e00b0023f7666c8a1mr2037366pjb.18.1680599418382; Tue, 04 Apr 2023 02:10:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680599418; cv=none; d=google.com; s=arc-20160816; b=S++ettZYbvGgbpHVE5OVwli/OHEI1yIW0oCkzzm2uzivTkDweXMKBMjcmJFSOQZqzP RIzqgxIrJZ4odtZb2uzjge+T/LABvQIFlitJismnaVPW6ftJoba6Vnaga/EpgsSviXnE elV8nI5mSrUncXPw/bjGlDski/e5jciEF/ouapykvdudTqFP2VgH+P+wHCOJZIRYpHp1 2poD6Fymq9OkPm1eDfnRWjwvhOhxweRC4MQf+JZf23fGBxLH3e8/thqXLG52m4SRL5JS lF8diDo6g+T1EPkd/bu7zalBjaVTqJAkJBXFRBtQTLIticgwsjup2ieymVYm4eNeo3/u tNXQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :to:from:dkim-signature:dkim-filter; bh=Tfb5WkFLz58zOqZyiYU2NircAhPZU3AOqffdnGjnjq0=; b=V0vC3Jvfiv6pi+27CFDTbJF5YmtzJGNuG/5M8U6k2dBRFHxI9Sk0VS6XBNNj487M4G Q8HZbmZAtiIz4n4sa+CyLnHdlQEncTVxbDzDTgT3iRzy0I4RTUdY4sLiujDH2oOoNn/+ znfu1QMmqmd/FOtyHM9M6zRge/pTGEJlTimqWmFlIe3/RkWg29vt4w2fqTbqb2VPj6VT qNKg6BhvJ4mC4c/Gm7DfQBdnQTrJ8LP/KHBBvaXU/1bQ0jImWfGAt/KPHJ8LCXgK8rip LMXl+wx9pWYRQXCMMMzJs5V328c9YkGyN76nr684pr9BsaEPA26EfrhND/uvD3vtm//R JSdw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=HrBaoEvc; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id ob2-20020a17090b390200b0022bb71938casi15030034pjb.50.2023.04.04.02.10.06; Tue, 04 Apr 2023 02:10:18 -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; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=HrBaoEvc; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234235AbjDDJBY (ORCPT + 99 others); Tue, 4 Apr 2023 05:01:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233903AbjDDJBL (ORCPT ); Tue, 4 Apr 2023 05:01:11 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B8B291FE6; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 297AC210DD8D; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 297AC210DD8D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680598869; bh=Tfb5WkFLz58zOqZyiYU2NircAhPZU3AOqffdnGjnjq0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=HrBaoEvcIE9l1TZt+1TgiVhPlORE3mnycp6P/yc6X/Wxbn7guyS/t5KFa/DEAzGe2 PJIvS/LTQ/8bcEBOTJfjx6tjYrY4nZryGFcfynp+5Dck6esP9wshf1pjt1ectzjlxn 87W6/zoj935+cGXQ19lrKODc77AED3dB5/NnYVKk= From: Saurabh Sengar To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, arnd@arndb.de, tiala@microsoft.com, mikelley@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org, jgross@suse.com, mat.jonczyk@o2.pl Subject: [PATCH v4 2/5] x86/hyperv: Add VTL specific structs and hypercalls Date: Tue, 4 Apr 2023 02:01:01 -0700 Message-Id: <1680598864-16981-3-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> References: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> X-Spam-Status: No, score=-17.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762236215677395976?= X-GMAIL-MSGID: =?utf-8?q?1762236215677395976?= Add structs and hypercalls required to enable VTL support on x86. Signed-off-by: Saurabh Sengar Reviewed-by: Michael Kelley Reviewed-by: Stanislav Kinsburskii --- arch/x86/include/asm/hyperv-tlfs.h | 75 ++++++++++++++++++++++++++++++ include/asm-generic/hyperv-tlfs.h | 4 ++ 2 files changed, 79 insertions(+) diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index 0b73a809e9e1..0b0b4e9a4318 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -713,6 +713,81 @@ union hv_msi_entry { } __packed; }; +struct hv_x64_segment_register { + __u64 base; + __u32 limit; + __u16 selector; + union { + struct { + __u16 segment_type : 4; + __u16 non_system_segment : 1; + __u16 descriptor_privilege_level : 2; + __u16 present : 1; + __u16 reserved : 4; + __u16 available : 1; + __u16 _long : 1; + __u16 _default : 1; + __u16 granularity : 1; + } __packed; + __u16 attributes; + }; +} __packed; + +struct hv_x64_table_register { + __u16 pad[3]; + __u16 limit; + __u64 base; +} __packed; + +struct hv_init_vp_context { + u64 rip; + u64 rsp; + u64 rflags; + + struct hv_x64_segment_register cs; + struct hv_x64_segment_register ds; + struct hv_x64_segment_register es; + struct hv_x64_segment_register fs; + struct hv_x64_segment_register gs; + struct hv_x64_segment_register ss; + struct hv_x64_segment_register tr; + struct hv_x64_segment_register ldtr; + + struct hv_x64_table_register idtr; + struct hv_x64_table_register gdtr; + + u64 efer; + u64 cr0; + u64 cr3; + u64 cr4; + u64 msr_cr_pat; +} __packed; + +union hv_input_vtl { + u8 as_uint8; + struct { + u8 target_vtl: 4; + u8 use_target_vtl: 1; + u8 reserved_z: 3; + }; +} __packed; + +struct hv_enable_vp_vtl { + u64 partition_id; + u32 vp_index; + union hv_input_vtl target_vtl; + u8 mbz0; + u16 mbz1; + struct hv_init_vp_context vp_context; +} __packed; + +struct hv_get_vp_from_apic_id_in { + u64 partition_id; + union hv_input_vtl target_vtl; + u8 res[7]; + u32 apic_ids[]; +} __packed; + #include #endif diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h index b870983596b9..87258341fd7c 100644 --- a/include/asm-generic/hyperv-tlfs.h +++ b/include/asm-generic/hyperv-tlfs.h @@ -146,6 +146,7 @@ union hv_reference_tsc_msr { /* Declare the various hypercall operations. */ #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE 0x0002 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST 0x0003 +#define HVCALL_ENABLE_VP_VTL 0x000f #define HVCALL_NOTIFY_LONG_SPIN_WAIT 0x0008 #define HVCALL_SEND_IPI 0x000b #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX 0x0013 @@ -165,6 +166,8 @@ union hv_reference_tsc_msr { #define HVCALL_MAP_DEVICE_INTERRUPT 0x007c #define HVCALL_UNMAP_DEVICE_INTERRUPT 0x007d #define HVCALL_RETARGET_INTERRUPT 0x007e +#define HVCALL_START_VP 0x0099 +#define HVCALL_GET_VP_ID_FROM_APIC_ID 0x009a #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db @@ -218,6 +221,7 @@ enum HV_GENERIC_SET_FORMAT { #define HV_STATUS_INVALID_PORT_ID 17 #define HV_STATUS_INVALID_CONNECTION_ID 18 #define HV_STATUS_INSUFFICIENT_BUFFERS 19 +#define HV_STATUS_VTL_ALREADY_ENABLED 134 /* * The Hyper-V TimeRefCount register and the TSC From patchwork Tue Apr 4 09:01:02 2023 Content-Type: text/plain; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id k6-20020aa79d06000000b0062e14211e54si4059265pfp.240.2023.04.04.02.08.56; Tue, 04 Apr 2023 02:09:08 -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; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=na954Lzp; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234181AbjDDJBO (ORCPT + 99 others); Tue, 4 Apr 2023 05:01:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233795AbjDDJBL (ORCPT ); Tue, 4 Apr 2023 05:01:11 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C2FF21FF6; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 43E06210DD8F; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 43E06210DD8F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680598869; bh=lolaL0ucqGcng5SGGnPtcnPytbtw0ZL9CTqusc/YQDI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=na954LzphK/Uui1KNiGQ5WhOfFoW70tSes/WYIlw0tI1qLM0J8ASF6Dgz92pLM7nC 8O2U5/YBjkelV7DFfuVUg9tJ+ZCiK+3AP6rOti3nACwr4LJyfhYbi+CA+3CNlkoCdI RlBt/1h+w1Aj2xdmoRct1JbaArql8ToIJWXO5Zdo= From: Saurabh Sengar To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, arnd@arndb.de, tiala@microsoft.com, mikelley@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org, jgross@suse.com, mat.jonczyk@o2.pl Subject: [PATCH v4 3/5] x86/hyperv: Make hv_get_nmi_reason public Date: Tue, 4 Apr 2023 02:01:02 -0700 Message-Id: <1680598864-16981-4-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> References: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> X-Spam-Status: No, score=-17.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762236142523097984?= X-GMAIL-MSGID: =?utf-8?q?1762236142523097984?= Move hv_get_nmi_reason to .h file so it can be used in other modules as well. Signed-off-by: Saurabh Sengar Reviewed-by: Michael Kelley --- arch/x86/include/asm/mshyperv.h | 5 +++++ arch/x86/kernel/cpu/mshyperv.c | 5 ----- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index e3cef98a0142..71ed240ef66d 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -189,6 +189,11 @@ static inline struct hv_vp_assist_page *hv_get_vp_assist_page(unsigned int cpu) return hv_vp_assist_page[cpu]; } +static inline unsigned char hv_get_nmi_reason(void) +{ + return 0; +} + void __init hyperv_init(void); void hyperv_setup_mmu_ops(void); void set_hv_tscchange_cb(void (*cb)(void)); diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 315fc358e584..5ee02af57dac 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -249,11 +249,6 @@ static uint32_t __init ms_hyperv_platform(void) return HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS; } -static unsigned char hv_get_nmi_reason(void) -{ - return 0; -} - #ifdef CONFIG_X86_LOCAL_APIC /* * Prior to WS2016 Debug-VM sends NMIs to all CPUs which makes From patchwork Tue Apr 4 09:01:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saurabh Singh Sengar X-Patchwork-Id: 78941 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2881780vqo; Tue, 4 Apr 2023 02:09:22 -0700 (PDT) X-Google-Smtp-Source: AKy350bAo89PnG1Yp6Hkc+tksttD31X6evWp1w4DbggJRuAnwkeBsg9e4qa5bHIg+kwyGdqHo985 X-Received: by 2002:a17:903:2015:b0:1a2:4efa:fcc0 with SMTP id s21-20020a170903201500b001a24efafcc0mr1698786pla.1.1680599362011; Tue, 04 Apr 2023 02:09:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680599361; cv=none; d=google.com; s=arc-20160816; b=xwfps/dXbghQDYyPHQBltMorcnlxXMUE35Y+mZdk/15abmCvUJ3arqy1fSIDYO3+9d aIW/HCgZ2euhhAvw/qeo0xBB8ifsmztW309Il4fV4E733ZsFlPZFVanCHNezg25zwp3D k9P7cg9rXwbnU6N665lhr8+1NcCZa3KyZTuvr1kE8GAd7m4HiWgiJAmv3jx2dnRABRLj znRzjl/aahWDaNIwywOX9eFNlkQWepcPFDDooSZzQG1W9907QK12PL7GETJPCcFG/Z1q r5r9iHIWMaVnTLpsLEFvYxdwpoVRZ0JoZBH3F1rHyQCPi0ePV8Qx2YEKWTZGktGydy6q Dx/w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :to:from:dkim-signature:dkim-filter; bh=ZJSNDxHuoCpxuFP6EwKcvSgo1VZVW6Qhmfhsxpz/kw8=; b=taNK34ImMJcr25XqUaB05VHeULfVwHvbfCQWI9HTq0h51wgSLaw8AHJt5G6wCGWVE3 DgXCE5JOUSqYZH0Ro3YimgqpODhcEk/74sfk+15+rUqiTxzxaDHWtMZyWOewGzLO6vtd DGYsX3joNr50baUm+3WPcWOcuGFMoVwO0t40Mes73mahILBSzTvk213iNBMgvgcA2S1g +EQ4iXMgEZJ6bMo8nd3v3c2VPLuvVynqVcNae/UyNaypaiRjiFdbW9g7mwAHo/ryyIun cGi3XhYRlm4WxEyfKtkCuravDkZvtLH4Z41hBStJi4ZgGB1gvL1ScFpCX/s/jOF65E7M OIdw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=qEkczgNL; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id z8-20020a63e548000000b0050fa04005e6si10250814pgj.412.2023.04.04.02.09.09; Tue, 04 Apr 2023 02:09:21 -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; dkim=pass header.i=@linux.microsoft.com header.s=default header.b=qEkczgNL; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234199AbjDDJBR (ORCPT + 99 others); Tue, 4 Apr 2023 05:01:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233809AbjDDJBL (ORCPT ); Tue, 4 Apr 2023 05:01:11 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 12E1710EA; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 5CFFE210DD92; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 5CFFE210DD92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680598869; bh=ZJSNDxHuoCpxuFP6EwKcvSgo1VZVW6Qhmfhsxpz/kw8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=qEkczgNLHrbA3o4tZ+Z2OJTojDuZCgYBbC4JUHLVLlm9IEDH/xDJaOOiAFH5w/7uA 8RKrcuhqYvQcMR/0bSt3NtXGYOuggo2pdnvscFehVu8M8zkwZNGGolVa66zPHtnram OllAPOZgFB2eTgPPFoaMwU52Xbi4uBfhLqcTRxlk= From: Saurabh Sengar To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, arnd@arndb.de, tiala@microsoft.com, mikelley@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org, jgross@suse.com, mat.jonczyk@o2.pl Subject: [PATCH v4 4/5] Drivers: hv: Kconfig: Add HYPERV_VTL_MODE Date: Tue, 4 Apr 2023 02:01:03 -0700 Message-Id: <1680598864-16981-5-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> References: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> X-Spam-Status: No, score=-17.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762236156440493349?= X-GMAIL-MSGID: =?utf-8?q?1762236156440493349?= Add HYPERV_VTL_MODE Kconfig flag for VTL mode. Signed-off-by: Saurabh Sengar Reviewed-by: Michael Kelley --- drivers/hv/Kconfig | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 0747a8f1fcee..511f2e012c59 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -13,6 +13,30 @@ config HYPERV Select this option to run Linux as a Hyper-V client operating system. +config HYPERV_VTL_MODE + bool "Enable Linux to boot in VTL context" + depends on X86_64 && HYPERV + default n + help + Virtual Secure Mode (VSM) is a set of hypervisor capabilities and + enlightenments offered to host and guest partitions which enables + the creation and management of new security boundaries within + operating system software. + + VSM achieves and maintains isolation through Virtual Trust Levels + (VTLs). Virtual Trust Levels are hierarchical, with higher levels + being more privileged than lower levels. VTL0 is the least privileged + level, and currently only other level supported is VTL2. + + Select this option to build a Linux kernel to run at a VTL other than + the normal VTL0, which currently is only VTL2. This option + initializes the x86 platform for VTL2, and adds the ability to boot + secondary CPUs directly into 64-bit context as required for VTLs other + than 0. A kernel built with this option must run at VTL2, and will + not run as a normal guest. + + If unsure, say N + config HYPERV_TIMER def_bool HYPERV && X86 From patchwork Tue Apr 4 09:01:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saurabh Singh Sengar X-Patchwork-Id: 78945 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2886392vqo; Tue, 4 Apr 2023 02:19:01 -0700 (PDT) X-Google-Smtp-Source: AKy350bQtbUYJ11aoMbE+kuLEldTvnHcR8fzxkmIlTbr9bBGctR5ak8TYMNVtoC1M4hmGcfRmMoi X-Received: by 2002:a17:90a:ea05:b0:240:ab49:51a2 with SMTP id w5-20020a17090aea0500b00240ab4951a2mr1913202pjy.47.1680599940875; Tue, 04 Apr 2023 02:19:00 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680599940; cv=none; d=google.com; s=arc-20160816; b=Iktj30m8OVGcipmZ0CasR0TdgNRTIfvVgpTQEP5gRTs95FLWD+aACCPlWW0pDFQo6k oaOsKuduLHno4obqou3qIeDkGCV4Up7PkSqxHTcI+RZG3Mes5CjAXT+sIvgaflFbmXfO BptvPf0Jj1qeKuzyIBSDZlutQCfBxZ1jQAHVNL3B2rkNcv6q5JK/YjK9yuGPAYNrkbsG mETeEr2GeysTbbYqhXTms3c+6rm6bAaCO/qK73WsBX1+WieawnglJi7t7boYIRe6Dx3w pdwZq/pJrBZM4ZN2pwzNwIvXaNgb6ZZu/PLj5aoiO0+LQ1ZapzSwe8Q9r9or5sQvngqR 2hOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :to:from:dkim-signature:dkim-filter; bh=YjwkN6oNVFUpa9gjv8NVfCyoligSRs26cxWXxmQGs0Y=; b=DWJdjvc37wSIGfPOL9cazeSIYtvEqV2gOpewL7aolNfw00UZxxm8jvTiquOKzL9P2t +hN+f67TsfSObbfYzEAnVdh+fy3sOJhg+Vo6truM+rrYbif80Bt1t1zlG+gzrAJzcJnt aCfqv/ZoY4heZykrkuBJ21LWsFugnlSAhorHX80jx+Anh+dKTm+I1BB3EoDUBaZ7ZjPE 3G+QfhBt8ec/R+CqPtnxBNaBrbui5415EgO0ZO3uRup1SOzfK6FmaIJ9RC6zml1QKY2p kegT1YalcumSwnAf3+6KGtS5aMHv980XvRTpKwHPjFmui8sj20nX8b7E0DuL+si48CwF 2FkQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.microsoft.com header.s=default header.b="lFdfNrs/"; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id p7-20020a170902e74700b001a259e2b8cbsi10710961plf.137.2023.04.04.02.18.48; Tue, 04 Apr 2023 02:19:00 -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; dkim=pass header.i=@linux.microsoft.com header.s=default header.b="lFdfNrs/"; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234240AbjDDJBZ (ORCPT + 99 others); Tue, 4 Apr 2023 05:01:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234131AbjDDJBM (ORCPT ); Tue, 4 Apr 2023 05:01:12 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 345031BE3; Tue, 4 Apr 2023 02:01:11 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 75DF9210DD94; Tue, 4 Apr 2023 02:01:09 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 75DF9210DD94 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1680598869; bh=YjwkN6oNVFUpa9gjv8NVfCyoligSRs26cxWXxmQGs0Y=; h=From:To:Subject:Date:In-Reply-To:References:From; b=lFdfNrs/ci4nOrpsydoXiJUjVPjRAr6VewT0bgs7jh1jUnBcqTHYOLZJ1/iet5nDl srmKM/pSV/V7dsQ9C+Yd7+F0N7MsiEuuVSeEo73yYz1kljQIuH0jJYBYi+p9N2jq0j SyyNhfKLo3YCoW0swWSELh4APTlBwKN2aD94SgV8= From: Saurabh Sengar To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, arnd@arndb.de, tiala@microsoft.com, mikelley@microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org, jgross@suse.com, mat.jonczyk@o2.pl Subject: [PATCH v4 5/5] x86/hyperv: VTL support for Hyper-V Date: Tue, 4 Apr 2023 02:01:04 -0700 Message-Id: <1680598864-16981-6-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> References: <1680598864-16981-1-git-send-email-ssengar@linux.microsoft.com> X-Spam-Status: No, score=-17.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_MED,SPF_HELO_PASS, SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762236763349881807?= X-GMAIL-MSGID: =?utf-8?q?1762236763349881807?= Virtual Trust Levels (VTL) helps enable Hyper-V Virtual Secure Mode (VSM) feature. VSM is a set of hypervisor capabilities and enlightenments offered to host and guest partitions which enable the creation and management of new security boundaries within operating system software. VSM achieves and maintains isolation through VTLs. Add early initialization for Virtual Trust Levels (VTL). This includes initializing the x86 platform for VTL and enabling boot support for secondary CPUs to start in targeted VTL context. For now, only enable the code for targeted VTL level as 2. When starting an AP at a VTL other than VTL0, the AP must start directly in 64-bit mode, bypassing the usual 16-bit -> 32-bit -> 64-bit mode transition sequence that occurs after waking up an AP with SIPI whose vector points to the 16-bit AP startup trampoline code. Signed-off-by: Saurabh Sengar Reviewed-by: Stanislav Kinsburskii Reviewed-by: Michael Kelley --- [V4] - replace initial_stack with current->thread.sp as per recent upstream changes arch/x86/hyperv/Makefile | 1 + arch/x86/hyperv/hv_vtl.c | 227 ++++++++++++++++++++++++++++++++ arch/x86/include/asm/mshyperv.h | 10 ++ arch/x86/kernel/cpu/mshyperv.c | 1 + 4 files changed, 239 insertions(+) create mode 100644 arch/x86/hyperv/hv_vtl.c diff --git a/arch/x86/hyperv/Makefile b/arch/x86/hyperv/Makefile index 5d2de10809ae..3a1548054b48 100644 --- a/arch/x86/hyperv/Makefile +++ b/arch/x86/hyperv/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only obj-y := hv_init.o mmu.o nested.o irqdomain.o ivm.o obj-$(CONFIG_X86_64) += hv_apic.o hv_proc.o +obj-$(CONFIG_HYPERV_VTL_MODE) += hv_vtl.o ifdef CONFIG_X86_64 obj-$(CONFIG_PARAVIRT_SPINLOCKS) += hv_spinlock.o diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c new file mode 100644 index 000000000000..1ba5d3b99b16 --- /dev/null +++ b/arch/x86/hyperv/hv_vtl.c @@ -0,0 +1,227 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023, Microsoft Corporation. + * + * Author: + * Saurabh Sengar + */ + +#include +#include +#include +#include +#include +#include + +extern struct boot_params boot_params; +static struct real_mode_header hv_vtl_real_mode_header; + +void __init hv_vtl_init_platform(void) +{ + pr_info("Linux runs in Hyper-V Virtual Trust Level\n"); + + x86_init.irqs.pre_vector_init = x86_init_noop; + x86_init.timers.timer_init = x86_init_noop; + + x86_platform.get_wallclock = get_rtc_noop; + x86_platform.set_wallclock = set_rtc_noop; + x86_platform.get_nmi_reason = hv_get_nmi_reason; + + x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; + x86_platform.legacy.rtc = 0; + x86_platform.legacy.warm_reset = 0; + x86_platform.legacy.reserve_bios_regions = 0; + x86_platform.legacy.devices.pnpbios = 0; +} + +static inline u64 hv_vtl_system_desc_base(struct ldttss_desc *desc) +{ + return ((u64)desc->base3 << 32) | ((u64)desc->base2 << 24) | + (desc->base1 << 16) | desc->base0; +} + +static inline u32 hv_vtl_system_desc_limit(struct ldttss_desc *desc) +{ + return ((u32)desc->limit1 << 16) | (u32)desc->limit0; +} + +typedef void (*secondary_startup_64_fn)(void*, void*); +static void hv_vtl_ap_entry(void) +{ + ((secondary_startup_64_fn)secondary_startup_64)(&boot_params, &boot_params); +} + +static int hv_vtl_bringup_vcpu(u32 target_vp_index, u64 eip_ignored) +{ + u64 status; + int ret = 0; + struct hv_enable_vp_vtl *input; + unsigned long irq_flags; + + struct desc_ptr gdt_ptr; + struct desc_ptr idt_ptr; + + struct ldttss_desc *tss; + struct ldttss_desc *ldt; + struct desc_struct *gdt; + + u64 rsp = current->thread.sp; + u64 rip = (u64)&hv_vtl_ap_entry; + + native_store_gdt(&gdt_ptr); + store_idt(&idt_ptr); + + gdt = (struct desc_struct *)((void *)(gdt_ptr.address)); + tss = (struct ldttss_desc *)(gdt + GDT_ENTRY_TSS); + ldt = (struct ldttss_desc *)(gdt + GDT_ENTRY_LDT); + + local_irq_save(irq_flags); + + input = *this_cpu_ptr(hyperv_pcpu_input_arg); + memset(input, 0, sizeof(*input)); + + input->partition_id = HV_PARTITION_ID_SELF; + input->vp_index = target_vp_index; + input->target_vtl.target_vtl = HV_VTL_MGMT; + + /* + * The x86_64 Linux kernel follows the 16-bit -> 32-bit -> 64-bit + * mode transition sequence after waking up an AP with SIPI whose + * vector points to the 16-bit AP startup trampoline code. Here in + * VTL2, we can't perform that sequence as the AP has to start in + * the 64-bit mode. + * + * To make this happen, we tell the hypervisor to load a valid 64-bit + * context (most of which is just magic numbers from the CPU manual) + * so that AP jumps right to the 64-bit entry of the kernel, and the + * control registers are loaded with values that let the AP fetch the + * code and data and carry on with work it gets assigned. + */ + + input->vp_context.rip = rip; + input->vp_context.rsp = rsp; + input->vp_context.rflags = 0x0000000000000002; + input->vp_context.efer = __rdmsr(MSR_EFER); + input->vp_context.cr0 = native_read_cr0(); + input->vp_context.cr3 = __native_read_cr3(); + input->vp_context.cr4 = native_read_cr4(); + input->vp_context.msr_cr_pat = __rdmsr(MSR_IA32_CR_PAT); + input->vp_context.idtr.limit = idt_ptr.size; + input->vp_context.idtr.base = idt_ptr.address; + input->vp_context.gdtr.limit = gdt_ptr.size; + input->vp_context.gdtr.base = gdt_ptr.address; + + /* Non-system desc (64bit), long, code, present */ + input->vp_context.cs.selector = __KERNEL_CS; + input->vp_context.cs.base = 0; + input->vp_context.cs.limit = 0xffffffff; + input->vp_context.cs.attributes = 0xa09b; + /* Non-system desc (64bit), data, present, granularity, default */ + input->vp_context.ss.selector = __KERNEL_DS; + input->vp_context.ss.base = 0; + input->vp_context.ss.limit = 0xffffffff; + input->vp_context.ss.attributes = 0xc093; + + /* System desc (128bit), present, LDT */ + input->vp_context.ldtr.selector = GDT_ENTRY_LDT * 8; + input->vp_context.ldtr.base = hv_vtl_system_desc_base(ldt); + input->vp_context.ldtr.limit = hv_vtl_system_desc_limit(ldt); + input->vp_context.ldtr.attributes = 0x82; + + /* System desc (128bit), present, TSS, 0x8b - busy, 0x89 -- default */ + input->vp_context.tr.selector = GDT_ENTRY_TSS * 8; + input->vp_context.tr.base = hv_vtl_system_desc_base(tss); + input->vp_context.tr.limit = hv_vtl_system_desc_limit(tss); + input->vp_context.tr.attributes = 0x8b; + + status = hv_do_hypercall(HVCALL_ENABLE_VP_VTL, input, NULL); + + if (!hv_result_success(status) && + hv_result(status) != HV_STATUS_VTL_ALREADY_ENABLED) { + pr_err("HVCALL_ENABLE_VP_VTL failed for VP : %d ! [Err: %#llx\n]", + target_vp_index, status); + ret = -EINVAL; + goto free_lock; + } + + status = hv_do_hypercall(HVCALL_START_VP, input, NULL); + + if (!hv_result_success(status)) { + pr_err("HVCALL_START_VP failed for VP : %d ! [Err: %#llx]\n", + target_vp_index, status); + ret = -EINVAL; + } + +free_lock: + local_irq_restore(irq_flags); + + return ret; +} + +static int hv_vtl_apicid_to_vp_id(u32 apic_id) +{ + u64 control; + u64 status; + unsigned long irq_flags; + struct hv_get_vp_from_apic_id_in *input; + u32 *output, ret; + + local_irq_save(irq_flags); + + input = *this_cpu_ptr(hyperv_pcpu_input_arg); + memset(input, 0, sizeof(*input)); + input->partition_id = HV_PARTITION_ID_SELF; + input->apic_ids[0] = apic_id; + + output = (u32 *)input; + + control = HV_HYPERCALL_REP_COMP_1 | HVCALL_GET_VP_ID_FROM_APIC_ID; + status = hv_do_hypercall(control, input, output); + ret = output[0]; + + local_irq_restore(irq_flags); + + if (!hv_result_success(status)) { + pr_err("failed to get vp id from apic id %d, status %#llx\n", + apic_id, status); + return -EINVAL; + } + + return ret; +} + +static int hv_vtl_wakeup_secondary_cpu(int apicid, unsigned long start_eip) +{ + int vp_id; + + pr_debug("Bringing up CPU with APIC ID %d in VTL2...\n", apicid); + vp_id = hv_vtl_apicid_to_vp_id(apicid); + + if (vp_id < 0) { + pr_err("Couldn't find CPU with APIC ID %d\n", apicid); + return -EINVAL; + } + if (vp_id > ms_hyperv.max_vp_index) { + pr_err("Invalid CPU id %d for APIC ID %d\n", vp_id, apicid); + return -EINVAL; + } + + return hv_vtl_bringup_vcpu(vp_id, start_eip); +} + +static int __init hv_vtl_early_init(void) +{ + /* + * `boot_cpu_has` returns the runtime feature support, + * and here is the earliest it can be used. + */ + if (cpu_feature_enabled(X86_FEATURE_XSAVE)) + panic("XSAVE has to be disabled as it is not supported by this module.\n" + "Please add 'noxsave' to the kernel command line.\n"); + + real_mode_header = &hv_vtl_real_mode_header; + apic->wakeup_secondary_cpu_64 = hv_vtl_wakeup_secondary_cpu; + + return 0; +} +early_initcall(hv_vtl_early_init); diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 71ed240ef66d..de4ad38f7d74 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -19,6 +19,10 @@ */ #define HV_IOAPIC_BASE_ADDRESS 0xfec00000 +#define HV_VTL_NORMAL 0x0 +#define HV_VTL_SECURE 0x1 +#define HV_VTL_MGMT 0x2 + union hv_ghcb; DECLARE_STATIC_KEY_FALSE(isolation_type_snp); @@ -276,6 +280,12 @@ static inline u64 hv_get_non_nested_register(unsigned int reg) { return 0; } #endif /* CONFIG_HYPERV */ +#ifdef CONFIG_HYPERV_VTL_MODE +void __init hv_vtl_init_platform(void); +#else +static inline void __init hv_vtl_init_platform(void) {} +#endif + #include #endif diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 5ee02af57dac..5180e3c50184 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -519,6 +519,7 @@ static void __init ms_hyperv_init_platform(void) /* Register Hyper-V specific clocksource */ hv_init_clocksource(); + hv_vtl_init_platform(); #endif /* * TSC should be marked as unstable only after Hyper-V