From nobody Thu Oct 9 14:44:38 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F19D21D3F1 for ; Wed, 18 Jun 2025 04:24:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750220689; cv=none; b=fQZ2ubzHJJZs9SWNPU6/nxgC3yShb7CPepT5o6G6ettb7juORXST03ceSPTedmpMfwbELr9hktI7EqNbkYELKbcF70pQQO5L4q6ZwUob8MRs4n5Q87TgqkaTDHS8IaDEraqgRjr9bOIdlh+pRIlJ//0rAOhKWwPy6Dexin12qW4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750220689; c=relaxed/simple; bh=pBsXSmQz4NiPuEOYLkwfwEN5cJ0gqQwNFVp5scXJ8tE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=QuTgMnJBQMwixbpzcOGlBg82KWhXQlDRVktHKO5WCwrMHvvAQrdViaK83Njfi3gbPihF7auZ1mW0mspYulMe1uACAEZ07OPhA18RkkkO+0UezHS8SpoX7BtkESM7CxqocVP7jFv3xHcFvAwqtO89z7SVZR99Zn+9dvc31MB8swk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthoughton.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=NqWonq7V; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jthoughton.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NqWonq7V" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b2f4c436301so300638a12.0 for ; Tue, 17 Jun 2025 21:24:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1750220687; x=1750825487; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=IPfdrb3qNj0vF7Vvj49qyj4bUirkHon/mzHMR4ThfgQ=; b=NqWonq7VmobhJY6B8Pahfi9r8ORcLnWhWSkGVdhdHb/NzeRnhzTL9TZAj3LBIEnGDO PyoIU5ZLbGzQyCoOeSUJqleOL5xMKr0/iKwJzqB+3lKorvTJFk2owbIQS7nPTn2ahsuu EENef+MVjqufiUzhAdhebe9p2S77nVA3ghYOsuEOqdum6GAcgRj1BVEKhQi9nL1Bu7Qv VEyxd9L8mBfhU4CGRAQietErjL+cws3rDceIVY2a6GOZ2tL+InTKSXzw4VHVo0wRSt2L YJ1JDMs0Z/PS+y1hgLNOVMRvK2YLJ5qbxqdAHVNW99FoQGZDxej+h644q5c/x+qTkzon B5EQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750220687; x=1750825487; 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=IPfdrb3qNj0vF7Vvj49qyj4bUirkHon/mzHMR4ThfgQ=; b=XhO1EiFToT1xAhXPlmuHjU3iI9doo6bXedWig6Xk34JkSQhtwIAXc2pqP6wTq2rzdz fzSvR3WkXtbqDQxxLjHfXnBwrdxcXdWiHCMSwT+HvwvObXxWunF/rkweHHJ7OwRuugt0 OR9/KI80d8yEH3UE+FbP2OAsxmBnQg5VHvt3PKo4QLnpgVSzS16jZQcPzW6//GxkAWn2 hzwixJP9sJK+ae8pfoI52LdH1/D96lNXJ+H6waLpEYlySAUgrPwddqseQsRd617ckP4g l2fACwrgEpA3LCM0Fb6lki1yktq+OkR9C+KVH+fA6ZCTHEiwmfXVnQf2ax2wOSD+xXiF ++Jg== X-Forwarded-Encrypted: i=1; AJvYcCUniBxmtLAA9ekzfm5uHjNWIunnxoVC8atTzv6YbX6iwCWbfFdcanlz3BJeQtA1hac4/TpQ/CDQgXikOIA=@vger.kernel.org X-Gm-Message-State: AOJu0YxhdcHkZ4wyQmkqQcVcEFX2UMGZvtvxhL7O5w2tnHYydHHwIi1w VAKYycFmZyJTuoB8UGNPy8JhCqjdtR2kpkxbpJP8yBTwT/5FDRUoCmYjB9Xq3kEJRon7kKX7WaI g4hEKkNh8K8WiDGyKiCCe/Q== X-Google-Smtp-Source: AGHT+IEwWie/mYOzWzkPEMzzYrHW7iM/BMlWT3ZNJE+z50G+eg48u4nBoLAfK8Q5b1sDwPdBgQjlTM5R7I81KayS X-Received: from pfbgt12.prod.google.com ([2002:a05:6a00:4e0c:b0:746:2524:8aab]) (user=jthoughton job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:7492:b0:215:d1dd:df4c with SMTP id adf61e73a8af0-22003686bacmr2081008637.6.1750220686708; Tue, 17 Jun 2025 21:24:46 -0700 (PDT) Date: Wed, 18 Jun 2025 04:24:22 +0000 In-Reply-To: <20250618042424.330664-1-jthoughton@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250618042424.330664-1-jthoughton@google.com> X-Mailer: git-send-email 2.50.0.rc2.696.g1fc2a0284f-goog Message-ID: <20250618042424.330664-14-jthoughton@google.com> Subject: [PATCH v3 13/15] KVM: selftests: Add KVM_MEM_USERFAULT + guest_memfd toggle tests From: James Houghton To: Paolo Bonzini , Sean Christopherson , Oliver Upton Cc: Jonathan Corbet , Marc Zyngier , Yan Zhao , James Houghton , Nikita Kalyazin , Anish Moorthy , Peter Gonda , Peter Xu , David Matlack , wei.w.wang@intel.com, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Make sure KVM_MEM_USERFAULT can be toggled on and off for KVM_MEM_GUEST_MEMFD memslots. Signed-off-by: James Houghton --- .../selftests/kvm/set_memory_region_test.c | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/t= esting/selftests/kvm/set_memory_region_test.c index ba3fe8a53b33e..3f77abb257601 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -606,6 +606,35 @@ static void test_mmio_during_vectoring(void) =20 kvm_vm_free(vm); } + +static void test_private_memory_region_userfault(void) +{ + struct kvm_vm *vm; + int memfd; + + pr_info("Testing toggling KVM_MEM_USERFAULT on KVM_MEM_GUEST_MEMFD memory= regions\n"); + + vm =3D vm_create_barebones_type(KVM_X86_SW_PROTECTED_VM); + + test_invalid_guest_memfd(vm, vm->kvm_fd, 0, "KVM fd should fail"); + test_invalid_guest_memfd(vm, vm->fd, 0, "VM's fd should fail"); + + memfd =3D vm_create_guest_memfd(vm, MEM_REGION_SIZE, 0); + + vm_set_user_memory_region2(vm, MEM_REGION_SLOT, KVM_MEM_GUEST_MEMFD, + MEM_REGION_GPA, MEM_REGION_SIZE, 0, memfd, 0); + + vm_set_user_memory_region2(vm, MEM_REGION_SLOT, + KVM_MEM_GUEST_MEMFD | KVM_MEM_USERFAULT, + MEM_REGION_GPA, MEM_REGION_SIZE, 0, memfd, 0); + + vm_set_user_memory_region2(vm, MEM_REGION_SLOT, KVM_MEM_GUEST_MEMFD, + MEM_REGION_GPA, MEM_REGION_SIZE, 0, memfd, 0); + + close(memfd); + + kvm_vm_free(vm); +} #endif =20 int main(int argc, char *argv[]) @@ -633,6 +662,7 @@ int main(int argc, char *argv[]) (kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_SW_PROTECTED_VM))) { test_add_private_memory_region(); test_add_overlapping_private_memory_regions(); + test_private_memory_region_userfault(); } else { pr_info("Skipping tests for KVM_MEM_GUEST_MEMFD memory regions\n"); } --=20 2.50.0.rc2.692.g299adb8693-goog