From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 637A2C4320A for ; Thu, 5 Aug 2021 21:24:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 494936112F for ; Thu, 5 Aug 2021 21:24:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229948AbhHEVY4 (ORCPT ); Thu, 5 Aug 2021 17:24:56 -0400 Received: from linux.microsoft.com ([13.77.154.182]:46546 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241189AbhHEVYt (ORCPT ); Thu, 5 Aug 2021 17:24:49 -0400 Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 5B5E520BE661; Thu, 5 Aug 2021 14:24:34 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 5B5E520BE661 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1628198674; bh=RFtA0XpBh8LNz/BXtdNgDlUtX2iPhbZUZ0EJfqOEQrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=d6s4KOQAdZVjleIkx27B8ciU4iIevE/Ix7qee5mg9W4iMQiHix87wR2TjgeV14/eX s+3YhQQBfiaZBNceMgr86ls0lITNuHd0r3jvvw681tLmv7ZOl5WXnEIu26ml3bWMa/ dGvHTaGKWZCj/JPuhSiGbivsIZ6xeobS7QQQehUs= From: Nuno Das Neves To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, mikelley@microsoft.com, viremana@linux.microsoft.com, sunilmut@microsoft.com, wei.liu@kernel.org, vkuznets@redhat.com, ligrassi@microsoft.com, kys@microsoft.com, sthemmin@microsoft.com, anbelski@linux.microsoft.com Subject: [PATCH 17/19] drivers/hv: get and set partition property ioctls Date: Thu, 5 Aug 2021 14:23:59 -0700 Message-Id: <1628198641-791-18-git-send-email-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1628198641-791-1-git-send-email-nunodasneves@linux.microsoft.com> References: <1628198641-791-1-git-send-email-nunodasneves@linux.microsoft.com> Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org Introduce ioctls for getting and setting properties of guest partitions. Signed-off-by: Nuno Das Neves --- Documentation/virt/mshv/api.rst | 8 ++++ drivers/hv/hv_call.c | 58 +++++++++++++++++++++++++ drivers/hv/mshv.h | 8 ++++ drivers/hv/mshv_main.c | 47 ++++++++++++++++++++ include/asm-generic/hyperv-tlfs.h | 19 +++++++++ include/uapi/asm-generic/hyperv-tlfs.h | 59 ++++++++++++++++++++++++++ include/uapi/linux/mshv.h | 9 ++++ 7 files changed, 208 insertions(+) diff --git a/Documentation/virt/mshv/api.rst b/Documentation/virt/mshv/api.rst index bf3c060bd418..e660e0e6865e 100644 --- a/Documentation/virt/mshv/api.rst +++ b/Documentation/virt/mshv/api.rst @@ -159,4 +159,12 @@ Maps a page into userspace that can be used to get and set common registers while the vp is suspended. The page is laid out in struct hv_vp_register_page in asm/hyperv-tlfs.h. +3.11 MSHV_SET_PARTITION_PROPERTY and MSHV_GET_PARTITION_PROPERTY +---------------------------------------------------------------- +:Type: partition ioctl +:Parameters: struct mshv_partition_property +:Returns: 0 on success + +Can be used to get/set various properties of a partition. + diff --git a/drivers/hv/hv_call.c b/drivers/hv/hv_call.c index eb98183ce8ef..776095de9679 100644 --- a/drivers/hv/hv_call.c +++ b/drivers/hv/hv_call.c @@ -638,3 +638,61 @@ int hv_call_map_vp_state_page( return ret; } + +int hv_call_get_partition_property( + u64 partition_id, + u64 property_code, + u64 *property_value) +{ + u64 status; + unsigned long flags; + struct hv_get_partition_property_in *input; + struct hv_get_partition_property_out *output; + + local_irq_save(flags); + input = (struct hv_get_partition_property_in *)(*this_cpu_ptr( + hyperv_pcpu_input_arg)); + output = (struct hv_get_partition_property_out *)(*this_cpu_ptr( + hyperv_pcpu_output_arg)); + memset(input, 0, sizeof(*input)); + input->partition_id = partition_id; + input->property_code = property_code; + status = hv_do_hypercall(HVCALL_GET_PARTITION_PROPERTY, input, + output); + + if (!hv_result_success(status)) { + pr_err("%s: %s\n", __func__, hv_status_to_string(status)); + local_irq_restore(flags); + return hv_status_to_errno(status); + } + *property_value = output->property_value; + + local_irq_restore(flags); + + return 0; +} + +int hv_call_set_partition_property( + u64 partition_id, + u64 property_code, + u64 property_value) +{ + u64 status; + unsigned long flags; + struct hv_set_partition_property *input; + + local_irq_save(flags); + input = (struct hv_set_partition_property *)(*this_cpu_ptr( + hyperv_pcpu_input_arg)); + memset(input, 0, sizeof(*input)); + input->partition_id = partition_id; + input->property_code = property_code; + input->property_value = property_value; + status = hv_do_hypercall(HVCALL_SET_PARTITION_PROPERTY, input, NULL); + local_irq_restore(flags); + + if (!hv_result_success(status)) + pr_err("%s: %s\n", __func__, hv_status_to_string(status)); + + return hv_status_to_errno(status); +} diff --git a/drivers/hv/mshv.h b/drivers/hv/mshv.h index a9215581be6b..8230368b4257 100644 --- a/drivers/hv/mshv.h +++ b/drivers/hv/mshv.h @@ -101,5 +101,13 @@ int hv_call_map_vp_state_page( u32 vp_index, u64 partition_id, struct page **state_page); +int hv_call_get_partition_property( + u64 partition_id, + u64 property_code, + u64 *property_value); +int hv_call_set_partition_property( + u64 partition_id, + u64 property_code, + u64 property_value); #endif /* _MSHV_H */ diff --git a/drivers/hv/mshv_main.c b/drivers/hv/mshv_main.c index 1495ac2fd90b..d522f8a26a19 100644 --- a/drivers/hv/mshv_main.c +++ b/drivers/hv/mshv_main.c @@ -576,6 +576,45 @@ mshv_partition_ioctl_create_vp(struct mshv_partition *partition, return ret; } +static long +mshv_partition_ioctl_get_property(struct mshv_partition *partition, + void __user *user_args) +{ + struct mshv_partition_property args; + long ret; + + if (copy_from_user(&args, user_args, sizeof(args))) + return -EFAULT; + + ret = hv_call_get_partition_property( + partition->id, + args.property_code, + &args.property_value); + + if (ret) + return ret; + + if (copy_to_user(user_args, &args, sizeof(args))) + return -EFAULT; + + return 0; +} + +static long +mshv_partition_ioctl_set_property(struct mshv_partition *partition, + void __user *user_args) +{ + struct mshv_partition_property args; + + if (copy_from_user(&args, user_args, sizeof(args))) + return -EFAULT; + + return hv_call_set_partition_property( + partition->id, + args.property_code, + args.property_value); +} + static long mshv_partition_ioctl_map_memory(struct mshv_partition *partition, struct mshv_user_mem_region __user *user_mem) @@ -795,6 +834,14 @@ mshv_partition_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) ret = mshv_partition_ioctl_assert_interrupt(partition, (void __user *)arg); break; + case MSHV_GET_PARTITION_PROPERTY: + ret = mshv_partition_ioctl_get_property(partition, + (void __user *)arg); + break; + case MSHV_SET_PARTITION_PROPERTY: + ret = mshv_partition_ioctl_set_property(partition, + (void __user *)arg); + break; default: ret = -ENOTTY; } diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h index f8f44008c013..2c0dfd0b8763 100644 --- a/include/asm-generic/hyperv-tlfs.h +++ b/include/asm-generic/hyperv-tlfs.h @@ -147,6 +147,8 @@ struct ms_hyperv_tsc_page { #define HVCALL_INITIALIZE_PARTITION 0x0041 #define HVCALL_FINALIZE_PARTITION 0x0042 #define HVCALL_DELETE_PARTITION 0x0043 +#define HVCALL_GET_PARTITION_PROPERTY 0x0044 +#define HVCALL_SET_PARTITION_PROPERTY 0x0045 #define HVCALL_GET_PARTITION_ID 0x0046 #define HVCALL_DEPOSIT_MEMORY 0x0048 #define HVCALL_WITHDRAW_MEMORY 0x0049 @@ -882,4 +884,21 @@ struct hv_map_vp_state_page_out { u64 map_location; /* page number */ } __packed; +struct hv_get_partition_property_in { + u64 partition_id; + u32 property_code; /* enum hv_partition_property_code */ + u32 padding; +} __packed; + +struct hv_get_partition_property_out { + u64 property_value; +} __packed; + +struct hv_set_partition_property { + u64 partition_id; + u32 property_code; /* enum hv_partition_property_code */ + u32 padding; + u64 property_value; +} __packed; + #endif diff --git a/include/uapi/asm-generic/hyperv-tlfs.h b/include/uapi/asm-generic/hyperv-tlfs.h index a1bc77e463dd..1e572d38234a 100644 --- a/include/uapi/asm-generic/hyperv-tlfs.h +++ b/include/uapi/asm-generic/hyperv-tlfs.h @@ -136,4 +136,63 @@ enum hv_vp_state_page_type { HV_VP_STATE_PAGE_COUNT }; +enum hv_partition_property_code { + /* Privilege properties */ + HV_PARTITION_PROPERTY_PRIVILEGE_FLAGS = 0x00010000, + + /* Scheduling properties */ + HV_PARTITION_PROPERTY_SUSPEND = 0x00020000, + HV_PARTITION_PROPERTY_CPU_RESERVE = 0x00020001, + HV_PARTITION_PROPERTY_CPU_CAP = 0x00020002, + HV_PARTITION_PROPERTY_CPU_WEIGHT = 0x00020003, + HV_PARTITION_PROPERTY_CPU_GROUP_ID = 0x00020004, + + /* Time properties */ + HV_PARTITION_PROPERTY_TIME_FREEZE = 0x00030003, + + /* Debugging properties */ + HV_PARTITION_PROPERTY_DEBUG_CHANNEL_ID = 0x00040000, + + /* Resource properties */ + HV_PARTITION_PROPERTY_VIRTUAL_TLB_PAGE_COUNT = 0x00050000, + HV_PARTITION_PROPERTY_VSM_CONFIG = 0x00050001, + HV_PARTITION_PROPERTY_ZERO_MEMORY_ON_RESET = 0x00050002, + HV_PARTITION_PROPERTY_PROCESSORS_PER_SOCKET = 0x00050003, + HV_PARTITION_PROPERTY_NESTED_TLB_SIZE = 0x00050004, + HV_PARTITION_PROPERTY_GPA_PAGE_ACCESS_TRACKING = 0x00050005, + HV_PARTITION_PROPERTY_VSM_PERMISSIONS_DIRTY_SINCE_LAST_QUERY = 0x00050006, + HV_PARTITION_PROPERTY_SGX_LAUNCH_CONTROL_CONFIG = 0x00050007, + HV_PARTITION_PROPERTY_DEFAULT_SGX_LAUNCH_CONTROL0 = 0x00050008, + HV_PARTITION_PROPERTY_DEFAULT_SGX_LAUNCH_CONTROL1 = 0x00050009, + HV_PARTITION_PROPERTY_DEFAULT_SGX_LAUNCH_CONTROL2 = 0x0005000a, + HV_PARTITION_PROPERTY_DEFAULT_SGX_LAUNCH_CONTROL3 = 0x0005000b, + HV_PARTITION_PROPERTY_ISOLATION_STATE = 0x0005000c, + HV_PARTITION_PROPERTY_ISOLATION_CONTROL = 0x0005000d, + HV_PARTITION_PROPERTY_RDT_L3_COS_INDEX = 0x0005000e, + HV_PARTITION_PROPERTY_RDT_RMID = 0x0005000f, + HV_PARTITION_PROPERTY_IMPLEMENTED_PHYSICAL_ADDRESS_BITS = 0x00050010, + HV_PARTITION_PROPERTY_NON_ARCHITECTURAL_CORE_SHARING = 0x00050011, + HV_PARTITION_PROPERTY_HYPERCALL_DOORBELL_PAGE = 0x00050012, + + /* Compatibility properties */ + HV_PARTITION_PROPERTY_PROCESSOR_VENDOR = 0x00060000, + HV_PARTITION_PROPERTY_PROCESSOR_FEATURES_DEPRECATED = 0x00060001, + HV_PARTITION_PROPERTY_PROCESSOR_XSAVE_FEATURES = 0x00060002, + HV_PARTITION_PROPERTY_PROCESSOR_CL_FLUSH_SIZE = 0x00060003, + HV_PARTITION_PROPERTY_ENLIGHTENMENT_MODIFICATIONS = 0x00060004, + HV_PARTITION_PROPERTY_COMPATIBILITY_VERSION = 0x00060005, + HV_PARTITION_PROPERTY_PHYSICAL_ADDRESS_WIDTH = 0x00060006, + HV_PARTITION_PROPERTY_XSAVE_STATES = 0x00060007, + HV_PARTITION_PROPERTY_MAX_XSAVE_DATA_SIZE = 0x00060008, + HV_PARTITION_PROPERTY_PROCESSOR_CLOCK_FREQUENCY = 0x00060009, + HV_PARTITION_PROPERTY_PROCESSOR_FEATURES0 = 0x0006000a, + HV_PARTITION_PROPERTY_PROCESSOR_FEATURES1 = 0x0006000b, + + /* Guest software properties */ + HV_PARTITION_PROPERTY_GUEST_OS_ID = 0x00070000, + + /* Nested virtualization properties */ + HV_PARTITION_PROPERTY_PROCESSOR_VIRTUALIZATION_FEATURES = 0x00080000, +}; + #endif diff --git a/include/uapi/linux/mshv.h b/include/uapi/linux/mshv.h index 718a3617e1f1..1a6c22db4978 100644 --- a/include/uapi/linux/mshv.h +++ b/include/uapi/linux/mshv.h @@ -66,6 +66,11 @@ struct mshv_vp_state { } buf; }; +struct mshv_partition_property { + enum hv_partition_property_code property_code; + __u64 property_value; +}; + #define MSHV_IOCTL 0xB8 /* mshv device */ @@ -78,6 +83,10 @@ struct mshv_vp_state { #define MSHV_CREATE_VP _IOW(MSHV_IOCTL, 0x04, struct mshv_create_vp) #define MSHV_INSTALL_INTERCEPT _IOW(MSHV_IOCTL, 0x08, struct mshv_install_intercept) #define MSHV_ASSERT_INTERRUPT _IOW(MSHV_IOCTL, 0x09, struct mshv_assert_interrupt) +#define MSHV_SET_PARTITION_PROPERTY \ + _IOW(MSHV_IOCTL, 0xC, struct mshv_partition_property) +#define MSHV_GET_PARTITION_PROPERTY \ + _IOWR(MSHV_IOCTL, 0xD, struct mshv_partition_property) /* vp device */ #define MSHV_GET_VP_REGISTERS _IOWR(MSHV_IOCTL, 0x05, struct mshv_vp_registers) -- 2.23.4