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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8634C77B72 for ; Sun, 16 Apr 2023 07:24:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230204AbjDPHYM (ORCPT ); Sun, 16 Apr 2023 03:24:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229728AbjDPHYM (ORCPT ); Sun, 16 Apr 2023 03:24:12 -0400 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 182BC90; Sun, 16 Apr 2023 00:24:11 -0700 (PDT) Received: by mail-ed1-x52d.google.com with SMTP id 4fb4d7f45d1cf-50508810c8bso2672965a12.3; Sun, 16 Apr 2023 00:24:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681629849; x=1684221849; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=WzApRNmLj/C3OG/CHM2LgsaZWOMDJjJGhX2jIgFh5iQ=; b=ZzGoJ8Ob6wDQiTectXDiaEkTh5bRHklVWginnSvk8wNf5X3+mXGfkkyW/o7oaIoqTb 20bjGhupgHK5yAlaeS5jTRbVd1AzlO7jepKjx+YVjZMgiy6sr5Uc95ognkhCWzJQXCci 0urW3ObSU9WN3EVaCCsT+IhK/1Xf+38PmrRCTDkZpf6382bzOfSZeLzFwP5Ti6lG62Z0 TBEmvEFHzefbPLGLzSdaC/NTmstevmzg6R4F8OKFseD0Gi3NTMLu4/VuyelDbUNCH2of cqjlSSmYEqRaReg6Xm/655MPnIP9GqteNUoJKATPlVOip++HCP7KiOWyscb25HyOAWyz ixtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681629849; x=1684221849; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=WzApRNmLj/C3OG/CHM2LgsaZWOMDJjJGhX2jIgFh5iQ=; b=L0bgMPXUbwtAJIDbaxaFUoSo9y27y7dy86ef+LHni3qEOKS3QnLuSVL6R/9kBz1bp0 2xfYdtyuIi2E2nnIOWz3DRzsoT9z0tPzBkfj/ycVxX4iMKmkvidstK2EMWVFQD1nazo6 tFJ2jpQrtQrQglXLhgPMmutNFGg8Xpk4oZDZ493Xn7DV+kZ4W8Atx70leKj/ciORy2PO f/VhvhC5Cr5jLH0uiOs8MbxBWh27frNTdqXy2UCk6Nk2SFC/6BxFkRl53oQQtcPTh+6v oztpQKyOxd+jjyoUXoQv/kezxmgOGUVxmHn6mAjAfPf3UthnCH2GFS4uASqXg4+x8QrN SX2A== X-Gm-Message-State: AAQBX9eTb+LzMbCBGQVkRyd60vyVUjlmy+AjiiwO8luCFYne3nfJFRr8 Q8yjf/+30nducRzoeZ+JI3yVf4B4kmjddAKv77M= X-Google-Smtp-Source: AKy350bovBnK6IYlQYXJJeOhlweH+duu5L0amN8OVVWuh88RlMjNoRuoFYcuEEXdzYGPozQ8Hs03V+iTqVA8M93Bpq0= X-Received: by 2002:a50:ab15:0:b0:504:eb61:b4eb with SMTP id s21-20020a50ab15000000b00504eb61b4ebmr5491982edc.7.1681629849148; Sun, 16 Apr 2023 00:24:09 -0700 (PDT) MIME-Version: 1.0 References: <20230403174406.4180472-1-ltykernel@gmail.com> <20230403174406.4180472-9-ltykernel@gmail.com> In-Reply-To: From: sky free Date: Sun, 16 Apr 2023 15:23:33 +0800 Message-ID: Subject: Re: [RFC PATCH V4 08/17] x86/hyperv: Initialize cpu and memory for sev-snp enlightened guest To: "Michael Kelley (LINUX)" , "luto@kernel.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "seanjc@google.com" , "pbonzini@redhat.com" , "jgross@suse.com" , Tianyu Lan , "kirill@shutemov.name" , "jiangshan.ljs@antgroup.com" , "peterz@infradead.org" , "ashish.kalra@amd.com" , "srutherford@google.com" , "akpm@linux-foundation.org" , "anshuman.khandual@arm.com" , "pawan.kumar.gupta@linux.intel.com" , "adrian.hunter@intel.com" , "daniel.sneddon@linux.intel.com" , "alexander.shishkin@linux.intel.com" , "sandipan.das@amd.com" , "ray.huang@amd.com" , "brijesh.singh@amd.com" , "michael.roth@amd.com" , "thomas.lendacky@amd.com" , "venu.busireddy@oracle.com" , "sterritt@google.com" , "tony.luck@intel.com" , "samitolvanen@google.com" , "fenghua.yu@intel.com" Cc: "pangupta@amd.com" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-arch@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org On 4/12/2023 10:39 PM, Michael Kelley (LINUX) wrote: >> + /* Read processor number and memory layout. */ >> + processor_count = *(u32 *)__va(EN_SEV_SNP_PROCESSOR_INFO_ADDR); >> + entry = (struct memory_map_entry *)(__va(EN_SEV_SNP_PROCESSOR_INFO_ADDR) >> + + sizeof(struct memory_map_entry)); > Why is the first map entry being skipped? The first entry is populated with processor count by Hyper-V.