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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-05-31 00:09:44 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-05-30 09:09:44 +0400 |
| commit | f7f510ec195781c857ab76366a3e1c59e1caae42 (patch) | |
| tree | ab14c93c4559bd00fc347953dc787bfffba828a8 /drivers/char/hw_random/Kconfig | |
| parent | 3ef536095446552823fc488fec1c5451aab1260d (diff) | |
| download | linux-f7f510ec195781c857ab76366a3e1c59e1caae42.tar.xz | |
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 'drivers/char/hw_random/Kconfig')
| -rw-r--r-- | drivers/char/hw_random/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 8d6c2089d2a8..efd0b4db7c8e 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -112,3 +112,12 @@ config HW_RANDOM_PASEMI If unsure, say Y. +config HW_RANDOM_VIRTIO + tristate "VirtIO Random Number Generator support" + depends on HW_RANDOM && VIRTIO + ---help--- + This driver provides kernel-side support for the virtual Random Number + Generator hardware. + + To compile this driver as a module, choose M here: the + module will be called virtio-rng. If unsure, say N. |