Skip to content
Navigation Menu
Toggle navigation
Sign in
In this repository
All GitHub Enterprise
↵
Jump to
↵
No suggested jump to results
In this repository
All GitHub Enterprise
↵
Jump to
↵
In this organization
All GitHub Enterprise
↵
Jump to
↵
In this repository
All GitHub Enterprise
↵
Jump to
↵
Sign in
Reseting focus
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
mariux64
/
linux
Public
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Issues
2
Pull requests
0
Actions
Projects
0
Wiki
Security
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Wiki
Security
Insights
Files
564eb71
Documentation
arch
block
crypto
drivers
firmware
fs
include
acpi
asm-generic
clocksource
crypto
drm
dt-bindings
keys
kvm
linux
math-emu
media
memory
misc
net
pcmcia
ras
rdma
rxrpc
scsi
sound
target
trace
uapi
asm-generic
drm
linux
mtd
rdma
scsi
sound
video
xen
Kbuild
evtchn.h
gntalloc.h
gntdev.h
privcmd.h
Kbuild
video
xen
Kbuild
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile
README
REPORTING-BUGS
Breadcrumbs
linux
/
include
/
uapi
/
xen
/
gntalloc.h
Blame
Blame
Latest commit
History
History
82 lines (75 loc) · 2.56 KB
Breadcrumbs
linux
/
include
/
uapi
/
xen
/
gntalloc.h
Top
File metadata and controls
Code
Blame
82 lines (75 loc) · 2.56 KB
Raw
/****************************************************************************** * gntalloc.h * * Interface to /dev/xen/gntalloc. * * Author: Daniel De Graaf <dgdegra@tycho.nsa.gov> * * This file is in the public domain. */ #ifndef __LINUX_PUBLIC_GNTALLOC_H__ #define __LINUX_PUBLIC_GNTALLOC_H__ /* * Allocates a new page and creates a new grant reference. */ #define IOCTL_GNTALLOC_ALLOC_GREF \ _IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref)) struct ioctl_gntalloc_alloc_gref { /* IN parameters */ /* The ID of the domain to be given access to the grants. */ uint16_t domid; /* Flags for this mapping */ uint16_t flags; /* Number of pages to map */ uint32_t count; /* OUT parameters */ /* The offset to be used on a subsequent call to mmap(). */ uint64_t index; /* The grant references of the newly created grant, one per page */ /* Variable size, depending on count */ uint32_t gref_ids[1]; }; #define GNTALLOC_FLAG_WRITABLE 1 /* * Deallocates the grant reference, allowing the associated page to be freed if * no other domains are using it. */ #define IOCTL_GNTALLOC_DEALLOC_GREF \ _IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref)) struct ioctl_gntalloc_dealloc_gref { /* IN parameters */ /* The offset returned in the map operation */ uint64_t index; /* Number of references to unmap */ uint32_t count; }; /* * Sets up an unmap notification within the page, so that the other side can do * cleanup if this side crashes. Required to implement cross-domain robust * mutexes or close notification on communication channels. * * Each mapped page only supports one notification; multiple calls referring to * the same page overwrite the previous notification. You must clear the * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it * to occur. */ #define IOCTL_GNTALLOC_SET_UNMAP_NOTIFY \ _IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntalloc_unmap_notify)) struct ioctl_gntalloc_unmap_notify { /* IN parameters */ /* Offset in the file descriptor for a byte within the page (same as * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to * be cleared. Otherwise, it can be any byte in the page whose * notification we are adjusting. */ uint64_t index; /* Action(s) to take on unmap */ uint32_t action; /* Event channel to notify */ uint32_t event_channel_port; }; /* Clear (set to zero) the byte specified by index */ #define UNMAP_NOTIFY_CLEAR_BYTE 0x1 /* Send an interrupt on the indicated event channel */ #define UNMAP_NOTIFY_SEND_EVENT 0x2 #endif /* __LINUX_PUBLIC_GNTALLOC_H__ */
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
You can’t perform that action at this time.