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Merge LinuxKPI changes from DragonflyBSD:

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- Implement pagefault_disable() and pagefault_enable().

Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2015-10-19 10:56:32 +00:00
parent dad154ab93
commit da7c18e051
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=289565
1 changed files with 12 additions and 1 deletions
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13
sys/ofed/include/linux/uaccess.h
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@ -2,7 +2,8 @@
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
* Copyright (c) 2015 François Tigeot
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -32,4 +33,14 @@
#define get_user(_x, _p) -copyin((_p), &(_x), sizeof(*(_p)))
#define put_user(_x, _p) -copyout(&(_x), (_p), sizeof(*(_p)))
static inline void pagefault_disable(void)
{
curthread_pflags_set(TDP_NOFAULTING | TDP_RESETSPUR);
}
static inline void pagefault_enable(void)
{
curthread_pflags_restore(~(TDP_NOFAULTING | TDP_RESETSPUR));
}
#endif /* _LINUX_UACCESS_H_ */