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 50233C7619A for ; Wed, 12 Apr 2023 21:35:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230020AbjDLVfc (ORCPT ); Wed, 12 Apr 2023 17:35:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229775AbjDLVfZ (ORCPT ); Wed, 12 Apr 2023 17:35:25 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 667157A85 for ; Wed, 12 Apr 2023 14:35:24 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-54bfc4e0330so213032637b3.3 for ; Wed, 12 Apr 2023 14:35:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1681335323; x=1683927323; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=uHo5QQHeSuM2EtVp0WZkAVQAlrFLxra0Ir0r+Emw+q4=; b=sa+XBYOkX2d/Tu87yvD3UhP5nhC7As51Olcx+W/RSEY/FGJuNDurfGxnX//1FqsoM2 PJTt3/hUG7FrXNKJiVjFgxDx7oahgt4JlSXSeXB7SuChwWitdUEUlqC13KbMvt9pAe5b zArqJRTUKp7mKE6YJmU9VTtlAuOdBuED2zJNjYiJQGU4IdX1hTel0j5u28jgfcUoLPuM UcSNN40jmwOi2rQ3p+pwHCL+Lzc4bweXDCbWWTR7hgoE/VkKJ3GoZ07ZMgQq8SUMudLk dwcDtmojhM9j6Jpn97L/vupf06dWUHVzfFDZhSr5ygLVJGg8y2SUDVOmW1Ps1ad3Wrad 9zGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681335323; x=1683927323; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uHo5QQHeSuM2EtVp0WZkAVQAlrFLxra0Ir0r+Emw+q4=; b=LjueViCjvuHITv8+eLW2IzALLY/aLgjBVMtartS4ZugfHj7TE42BsNAV1lHhL2+iL5 K1zXkhoCGkmCEaqC9f1iyYYnkXZVAUyQvN1V2DOFXoeGiHrd/qC0W/qG1Bt1UWv4VhFk 2Th6kyp4CVis2ejlXsDHjyHP4lBFttDMUlfgVHp5BFHcOg5lEldhz2XBcxI/ueT9w0zE 9Se8ut2h87wAty2vyCTJ9EzhprGEN3TOW8LQ/+Cg5wU9EtvEJT/ES516o/R0ZRJXk7oh SItd9lkOpvpmjbbU3UKnzpMJFP+P4lY5YlCGocC4OWan4eBR/UMG6WPx2MaER6lPVnVA +1LA== X-Gm-Message-State: AAQBX9egXHeUd4olRrXiiuhF468UAnyipAy/ECXo7jsh1dF2k4I/AtbD S7cFiIR9wQf8f4kp9XgIl3PTQO6v4Ez3/A== X-Google-Smtp-Source: AKy350Z2PC9zVB+t1rGgWRL74ikHOAYhj1EdKpabNbisfi4nEhLfjYbZhgRy3U2heOy2zhj+WgIR06d2qDQXMQ== X-Received: from laogai.c.googlers.com ([fda3:e722:ac3:cc00:2b:7d90:c0a8:2c9]) (user=amoorthy job=sendgmr) by 2002:a25:6c07:0:b0:b8b:eea7:525a with SMTP id h7-20020a256c07000000b00b8beea7525amr9848148ybc.7.1681335323435; Wed, 12 Apr 2023 14:35:23 -0700 (PDT) Date: Wed, 12 Apr 2023 21:34:57 +0000 In-Reply-To: <20230412213510.1220557-1-amoorthy@google.com> Mime-Version: 1.0 References: <20230412213510.1220557-1-amoorthy@google.com> X-Mailer: git-send-email 2.40.0.577.gac1e443424-goog Message-ID: <20230412213510.1220557-10-amoorthy@google.com> Subject: [PATCH v3 09/22] KVM: Annotate -EFAULTs from kvm_vcpu_map() From: Anish Moorthy To: pbonzini@redhat.com, maz@kernel.org Cc: oliver.upton@linux.dev, seanjc@google.com, jthoughton@google.com, amoorthy@google.com, bgardon@google.com, dmatlack@google.com, ricarkol@google.com, axelrasmussen@google.com, peterx@redhat.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Implement KVM_CAP_MEMORY_FAULT_INFO for efaults generated by kvm_vcpu_map(). Signed-off-by: Anish Moorthy --- virt/kvm/kvm_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 572adba9ad8ed..f3be5aa49829a 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2843,8 +2843,10 @@ int kvm_vcpu_map(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map) #endif } - if (!hva) + if (!hva) { + kvm_populate_efault_info(vcpu, gfn * PAGE_SIZE, PAGE_SIZE); return -EFAULT; + } map->page = page; map->hva = hva; -- 2.40.0.577.gac1e443424-goog