Revision 32ffa4f71e10009498ae6b54da65ab316db967bd authored by Axel Rasmussen on 19 May 2021, 20:03:33 UTC, committed by Paolo Bonzini on 27 May 2021, 11:45:55 UTC
This is a preparatory commit needed before we can use different kinds of backing pages for guest memory. Previously, we used perf_test_args.host_page_size, which is the host's native page size (commonly 4K). For VM_MEM_SRC_ANONYMOUS this turns out to be okay, but in a follow-up commit we want to allow using different kinds of backing memory. Take VM_MEM_SRC_ANONYMOUS_HUGETLB for example. Without this change, if we used that backing page type, when we issued a UFFDIO_COPY ioctl we'd only do so with 4K, rather than the full 2M of a backing hugepage. In this case, UFFDIO_COPY returns -EINVAL (__mcopy_atomic_hugetlb checks the size). Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Message-Id: <20210519200339.829146-5-axelrasmussen@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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osd_defs.h
/* BSDI osd_defs.h,v 1.4 1998/06/03 19:14:58 karels Exp */
/*
* Copyright (c) 1996-1999 Distributed Processing Technology Corporation
* All rights reserved.
*
* Redistribution and use in source form, with or without modification, are
* permitted provided that redistributions of source code must retain the
* above copyright notice, this list of conditions and the following disclaimer.
*
* This software is provided `as is' by Distributed Processing Technology and
* any express or implied warranties, including, but not limited to, the
* implied warranties of merchantability and fitness for a particular purpose,
* are disclaimed. In no event shall Distributed Processing Technology be
* liable for any direct, indirect, incidental, special, exemplary or
* consequential damages (including, but not limited to, procurement of
* substitute goods or services; loss of use, data, or profits; or business
* interruptions) however caused and on any theory of liability, whether in
* contract, strict liability, or tort (including negligence or otherwise)
* arising in any way out of the use of this driver software, even if advised
* of the possibility of such damage.
*
*/
#ifndef _OSD_DEFS_H
#define _OSD_DEFS_H
/*File - OSD_DEFS.H
****************************************************************************
*
*Description:
*
* This file contains the OS dependent defines. This file is included
*in osd_util.h and provides the OS specific defines for that file.
*
*Copyright Distributed Processing Technology, Corp.
* 140 Candace Dr.
* Maitland, Fl. 32751 USA
* Phone: (407) 830-5522 Fax: (407) 260-5366
* All Rights Reserved
*
*Author: Doug Anderson
*Date: 1/31/94
*
*Editors:
*
*Remarks:
*
*
*****************************************************************************/
/*Definitions - Defines & Constants ----------------------------------------- */
/* Define the operating system */
#if (defined(__linux__))
# define _DPT_LINUX
#elif (defined(__bsdi__))
# define _DPT_BSDI
#elif (defined(__FreeBSD__))
# define _DPT_FREE_BSD
#else
# define _DPT_SCO
#endif
#if defined (ZIL_CURSES)
#define _DPT_CURSES
#else
#define _DPT_MOTIF
#endif
/* Redefine 'far' to nothing - no far pointer type required in UNIX */
#define far
/* Define the mutually exclusive semaphore type */
#define SEMAPHORE_T unsigned int *
/* Define a handle to a DLL */
#define DLL_HANDLE_T unsigned int *
#endif
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