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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-03-18 15:00:33 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-03-18 15:00:33 +0000 |
| commit | 86d8fe5e6a886883cbbf15fb8c5d7399fd50bba6 (patch) | |
| tree | 4ed5324001904721d4d5e084cd17c7baad9f2572 /tools/include | |
| parent | 0de39e40277b50f7bca390602216e19a809cc45c (diff) | |
| download | xen-86d8fe5e6a886883cbbf15fb8c5d7399fd50bba6.tar.gz xen-86d8fe5e6a886883cbbf15fb8c5d7399fd50bba6.tar.bz2 xen-86d8fe5e6a886883cbbf15fb8c5d7399fd50bba6.zip | |
libxc: Variable-size gntdev support
This patch adds the ability to set the number of slots that may be
used for mapping grant references, using the gntdev user-space grant
reference mapping driver.
Signed-off-by: Derek Murray <Derek.Murray@cl.cam.ac.uk>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/xen-sys/Linux/gntdev.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/include/xen-sys/Linux/gntdev.h b/tools/include/xen-sys/Linux/gntdev.h index c95e46b663..8bd1467893 100644 --- a/tools/include/xen-sys/Linux/gntdev.h +++ b/tools/include/xen-sys/Linux/gntdev.h @@ -102,4 +102,18 @@ struct ioctl_gntdev_get_offset_for_vaddr { uint32_t pad; }; +/* + * Sets the maximum number of grants that may mapped at once by this gntdev + * instance. + * + * N.B. This must be called before any other ioctl is performed on the device. + */ +#define IOCTL_GNTDEV_SET_MAX_GRANTS \ +_IOC(_IOC_NONE, 'G', 3, sizeof(struct ioctl_gntdev_set_max_grants)) +struct ioctl_gntdev_set_max_grants { + /* IN parameter */ + /* The maximum number of grants that may be mapped at once. */ + uint32_t count; +}; + #endif /* __LINUX_PUBLIC_GNTDEV_H__ */ |