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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E24D9C4332F for ; Sun, 5 Nov 2023 16:36:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bRLWT6SzK2LmVf+Nk7+VH2ltjDVNcnXc/zOnSLQ+20s=; b=uxdKZWcapM9XOo Xz0QP+ujF4eUykiJNV8yW0+CiAuAJ0Aq5ZqeD80eTRd3GamB7a23diOPSh4g38D2HzlCjWkBn5qJf gLq1OHXXwioSLGBOF9vw6UXWqtuDc/0fl9v0oTorSO/24R/C7aeBXCiKc830O5X17h0xPz6yZ9xKP +g4Je0UpMTt7/hoERkwhv4fCzSTqhuZ+zCJv++NJ9529rIAa3cSn1gNlkYqQ2vioL5+lhnZ/pmSVO 3MBO5+dUM8ZqIzMb9sh5r7i4PUz9Ubx2e4diHSIhOL97XF1rrhUe+6cKFfozVsN8BPqxp/INOJKF1 Hf8V3uMbshQwtAG3nzig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qzg66-00FFiv-0A; Sun, 05 Nov 2023 16:35:38 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qzg5p-00FFQd-0h for linux-arm-kernel@bombadil.infradead.org; Sun, 05 Nov 2023 16:35:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:Content-Type :MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Sender:Reply-To:Content-ID:Content-Description; bh=C3cPw9fVJCr14nLNRz67sgxMTBasbZijMDuS/BBzhTY=; b=WXR5QtJ75TwpxyULQWzlBYXOV6 SGLjX1Li7hGd1LPaQA/ivd9fpOGZkNnXO93Q1QJhd2OzpK9YjEdKHOX+wrum7v3RCkdjiETXJW96Q yd2fbRSq8exmZeeQRnFNoe1D/SAsuYwSQhYlPQwaT8uj0v4HYm0+2dupEl4ZPLMd3J3zb2cEN+djR UyIzQpTBIXMtg+OgpV9j0T2AoIQJ5vRuPimd8u2YV+EKJNWoTQqJXB594YVduSCY9sEqdeUGT3gvM yYfaDu5ZpObwtYFgj9uyeU0k+5/eR3l1Dce2SdSlYlBQPCRUFc4AbLCiXSyctUDR3ScJM0d8xiHg7 ENajw5Tg==; Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by desiato.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qzg5l-009dr7-1M for linux-arm-kernel@lists.infradead.org; Sun, 05 Nov 2023 16:35:19 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1699202116; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C3cPw9fVJCr14nLNRz67sgxMTBasbZijMDuS/BBzhTY=; b=NT4jtxvXdcdUXKERd1fmTTRAa7DswFboQ9rmN9V3Ps6JLPy11JMCFn4rzr3MJtUnatesPh b9FEJQswOsOeYhjqMZGi0kI02piPuQlJ4ONmaeyXhhTSfIbKbRQiww2bE7ap2l4XVvsasb 1lO8gp5XuUNzXQZqoMv7J8w22M75IpM= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1699202116; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C3cPw9fVJCr14nLNRz67sgxMTBasbZijMDuS/BBzhTY=; b=NT4jtxvXdcdUXKERd1fmTTRAa7DswFboQ9rmN9V3Ps6JLPy11JMCFn4rzr3MJtUnatesPh b9FEJQswOsOeYhjqMZGi0kI02piPuQlJ4ONmaeyXhhTSfIbKbRQiww2bE7ap2l4XVvsasb 1lO8gp5XuUNzXQZqoMv7J8w22M75IpM= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-689-u2wPgqfeNgKSVK3J8tJjNw-1; Sun, 05 Nov 2023 11:35:12 -0500 X-MC-Unique: u2wPgqfeNgKSVK3J8tJjNw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CF79D80C344; Sun, 5 Nov 2023 16:35:10 +0000 (UTC) Received: from avogadro.redhat.com (unknown [10.39.192.93]) by smtp.corp.redhat.com (Postfix) with ESMTP id 101EF2166B26; Sun, 5 Nov 2023 16:35:03 +0000 (UTC) From: Paolo Bonzini To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Alexander Viro , Christian Brauner , "Matthew Wilcox (Oracle)" , Andrew Morton Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Xiaoyao Li , Xu Yilun , Chao Peng , Fuad Tabba , Jarkko Sakkinen , Anish Moorthy , David Matlack , Yu Zhang , Isaku Yamahata , =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= , Vlastimil Babka , Vishal Annapurve , Ackerley Tng , Maciej Szmigiero , David Hildenbrand , Quentin Perret , Michael Roth , Wang , Liam Merwick , Isaku Yamahata , "Kirill A. Shutemov" Subject: [PATCH 34/34] KVM: selftests: Add a memory region subtest to validate invalid flags Date: Sun, 5 Nov 2023 17:30:37 +0100 Message-ID: <20231105163040.14904-35-pbonzini@redhat.com> In-Reply-To: <20231105163040.14904-1-pbonzini@redhat.com> References: <20231105163040.14904-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.6 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231105_163517_802806_26153EF3 X-CRM114-Status: GOOD ( 14.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Sean Christopherson Add a subtest to set_memory_region_test to verify that KVM rejects invalid flags and combinations with -EINVAL. KVM might or might not fail with EINVAL anyways, but we can at least try. Signed-off-by: Sean Christopherson Message-Id: <20231031002049.3915752-1-seanjc@google.com> Signed-off-by: Paolo Bonzini --- .../selftests/kvm/set_memory_region_test.c | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c index 1891774eb6d4..343e807043e1 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -326,6 +326,53 @@ static void test_zero_memory_regions(void) } #endif /* __x86_64__ */ +static void test_invalid_memory_region_flags(void) +{ + uint32_t supported_flags = KVM_MEM_LOG_DIRTY_PAGES; + const uint32_t v2_only_flags = KVM_MEM_GUEST_MEMFD; + struct kvm_vm *vm; + int r, i; + +#ifdef __x86_64__ + supported_flags |= KVM_MEM_READONLY; + + if (kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_SW_PROTECTED_VM)) + vm = vm_create_barebones_protected_vm(); + else +#endif + vm = vm_create_barebones(); + + if (kvm_check_cap(KVM_CAP_MEMORY_ATTRIBUTES) & KVM_MEMORY_ATTRIBUTE_PRIVATE) + supported_flags |= KVM_MEM_GUEST_MEMFD; + + for (i = 0; i < 32; i++) { + if ((supported_flags & BIT(i)) && !(v2_only_flags & BIT(i))) + continue; + + r = __vm_set_user_memory_region(vm, MEM_REGION_SLOT, BIT(i), + MEM_REGION_GPA, MEM_REGION_SIZE, NULL); + + TEST_ASSERT(r && errno == EINVAL, + "KVM_SET_USER_MEMORY_REGION should have failed on v2 only flag 0x%lx", BIT(i)); + + if (supported_flags & BIT(i)) + continue; + + r = __vm_set_user_memory_region2(vm, MEM_REGION_SLOT, BIT(i), + MEM_REGION_GPA, MEM_REGION_SIZE, NULL, 0, 0); + TEST_ASSERT(r && errno == EINVAL, + "KVM_SET_USER_MEMORY_REGION2 should have failed on unsupported flag 0x%lx", BIT(i)); + } + + if (supported_flags & KVM_MEM_GUEST_MEMFD) { + r = __vm_set_user_memory_region2(vm, MEM_REGION_SLOT, + KVM_MEM_LOG_DIRTY_PAGES | KVM_MEM_GUEST_MEMFD, + MEM_REGION_GPA, MEM_REGION_SIZE, NULL, 0, 0); + TEST_ASSERT(r && errno == EINVAL, + "KVM_SET_USER_MEMORY_REGION2 should have failed, dirty logging private memory is unsupported"); + } +} + /* * Test it can be added memory slots up to KVM_CAP_NR_MEMSLOTS, then any * tentative to add further slots should fail. @@ -491,6 +538,8 @@ int main(int argc, char *argv[]) test_zero_memory_regions(); #endif + test_invalid_memory_region_flags(); + test_add_max_memory_regions(); if (kvm_has_cap(KVM_CAP_GUEST_MEMFD) && -- 2.39.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel