From nobody Thu Apr 9 09:18:50 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7376BC43219 for ; Fri, 4 Nov 2022 18:38:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232108AbiKDSiy (ORCPT ); Fri, 4 Nov 2022 14:38:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230045AbiKDSiv (ORCPT ); Fri, 4 Nov 2022 14:38:51 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9CAAC10043; Fri, 4 Nov 2022 11:38:50 -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 83E46205DA32; Fri, 4 Nov 2022 11:38:48 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 83E46205DA32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1667587128; bh=U9AOCmsv6YLLf4cMqDbSKLiOBujtTUIy6/UR/RPPRM8=; h=From:To:Subject:Date:From; b=eu8H7ythuTDN9Hn9PiACAdcWbJXCDTP7uD2h3n0sT+NAPtDr+NA2/YKiiHtTjRdTF Ba8yAiQtRKQGDNXhNDJnkHG7qOXvEbT3qo9qdQxXpIBF8Gc/igI2BNGwFR6k2IC8XE A8NAPrO2jmU2pmk3ZTfG4vDQUTIDopwXavjDnmr0= From: Saurabh Sengar To: ssengar@microsoft.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, ssengar@linux.microsoft.com, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, mikelley@microsoft.com, tglx@linutronix.de, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, anrayabh@linux.microsoft.com Subject: [PATCH v2] x86/Hyper-V: Expand definition of struct hv_vp_assist_page Date: Fri, 4 Nov 2022 11:38:43 -0700 Message-Id: <1667587123-31645-1-git-send-email-ssengar@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The struct hv_vp_assist_page has 24 bytes which is defined as u64[3], expand that to expose vtl_entry_reason, vtl_ret_x64rax and vtl_ret_x64rcx field. vtl_entry_reason is updated by hypervisor for the entry reason as to why the VTL was entered on the virtual processor. Guest updates the vtl_ret_* fields to provide the register values to restore on VTL return. The specific register values that are restored which will be updated on vtl_ret_x64rax and vtl_ret_x64rcx. Also added the missing fields for synthetic_time_unhalted_timer_expired, virtualization_fault_information and intercept_message. Signed-off-by: Saurabh Sengar Reviewed-by: --- [v2]: Corrected vtl_entry_reson size from u8 to u32 arch/x86/include/asm/hyperv-tlfs.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hype= rv-tlfs.h index 3089ec3..6d9368e 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -374,11 +374,20 @@ struct hv_nested_enlightenments_control { struct hv_vp_assist_page { __u32 apic_assist; __u32 reserved1; - __u64 vtl_control[3]; + __u32 vtl_entry_reason; + __u32 vtl_reserved; + __u64 vtl_ret_x64rax; + __u64 vtl_ret_x64rcx; struct hv_nested_enlightenments_control nested_control; __u8 enlighten_vmentry; __u8 reserved2[7]; __u64 current_nested_vmcs; + __u8 synthetic_time_unhalted_timer_expired; + __u8 reserved3[7]; + __u8 virtualization_fault_information[40]; + __u8 reserved4[8]; + __u8 intercept_message[256]; + __u8 vtl_ret_actions[256]; } __packed; =20 struct hv_enlightened_vmcs { --=20 1.8.3.1