diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VbglR0CanUsePhysPageList.cpp')
-rw-r--r-- | src/VBox/Additions/common/VBoxGuest/lib/VbglR0CanUsePhysPageList.cpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VbglR0CanUsePhysPageList.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VbglR0CanUsePhysPageList.cpp new file mode 100644 index 00000000..38646784 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/lib/VbglR0CanUsePhysPageList.cpp @@ -0,0 +1,52 @@ +/* $Id: VbglR0CanUsePhysPageList.cpp $ */ +/** @file + * VBoxGuestLibR0 - Physical memory heap. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "VBoxGuestR0LibInternal.h" + + +/** + * Checks whether the host supports physical page lists or not. + * + * @returns true if it does, false if it doesn't. + */ +DECLR0VBGL(bool) VbglR0CanUsePhysPageList(void) +{ + /* a_fLocked is false, because the actual capability of the host is requested. + * See VBGLR0_CAN_USE_PHYS_PAGE_LIST definition. + */ + int rc = vbglR0Enter(); + return RT_SUCCESS(rc) + && VBGLR0_CAN_USE_PHYS_PAGE_LIST(/*a_fLocked =*/ false); +} + |