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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-05-30 15:09:44 -0500 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-05-30 15:09:44 +1000 |
| commit | f7f510ec195781c857ab76366a3e1c59e1caae42 (patch) | |
| tree | ab14c93c4559bd00fc347953dc787bfffba828a8 /include/linux/virtio_rng.h | |
| parent | 3ef536095446552823fc488fec1c5451aab1260d (diff) | |
| download | lwn-f7f510ec195781c857ab76366a3e1c59e1caae42.tar.gz lwn-f7f510ec195781c857ab76366a3e1c59e1caae42.zip | |
virtio: An entropy device, as suggested by hpa.
Note that by itself, having a "hardware" random generator does very
little: you should probably run "rngd" in your guest to feed this into
the kernel entropy pool.
Included:
virtio_rng: dont use vmalloced addresses for virtio
If virtio_rng is build as a module, random_data is an address
in vmalloc space. As virtio expects guest real addresses, this
can cause any kind of funny behaviour, so lets allocate
random_data dynamically with kmalloc.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux/virtio_rng.h')
| -rw-r--r-- | include/linux/virtio_rng.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/virtio_rng.h b/include/linux/virtio_rng.h new file mode 100644 index 000000000000..331afb6c9f62 --- /dev/null +++ b/include/linux/virtio_rng.h @@ -0,0 +1,8 @@ +#ifndef _LINUX_VIRTIO_RNG_H +#define _LINUX_VIRTIO_RNG_H +#include <linux/virtio_config.h> + +/* The ID for virtio_rng */ +#define VIRTIO_ID_RNG 4 + +#endif /* _LINUX_VIRTIO_RNG_H */ |