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Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG |
Date: |
Wed, 21 Apr 2010 10:40:07 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Gerd Hoffmann wrote:
> On 04/20/10 23:31, Ian Molton wrote:
>
> >Using virtio-rng means that the data is going into the guest
> >kernels hwrng subsystem.
>
> Which is *the* major advantage of the virtio-rng driver. In case the
> guest kernel is recent enougth to have support for it, it will
> JustWork[tm]. No need for guest configuration, no need for some
> userspace tool. I'd like to see this driver being merged.
>
> With any kind of serial port (be it a emulated 16550 or virtio-serial)
> you'll need some daemon running inside the guest grabbing entropy data
> from the port and feeding it back into the kernel.
That's a bunch of false assumptions.
There's no reason a hwrng connector to virtio-serial could not be
automatic in a similar way to the console.
But enough of that: It's history now; the guest virtio-rng has existed
for more than a year. It is also amazingly short and simple. Yay for Rusty!
I don't object to virtio-rng; I think it's fine in principle and would
be happy to see the existing guests which have a virtio-rng driver
make use of it.
A bit of overlapping functionality is rife in emulators anyway :-)
-- Jamie
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, (continued)
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Paul Brook, 2010/04/13
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Paul Brook, 2010/04/13
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Jamie Lokier, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Blue Swirl, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Jamie Lokier, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Jamie Lokier, 2010/04/20
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Gerd Hoffmann, 2010/04/21
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG,
Jamie Lokier <=
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/21
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Gerd Hoffmann, 2010/04/21
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/22
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Jamie Lokier, 2010/04/22
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/23
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Jamie Lokier, 2010/04/23
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/24
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Gerd Hoffmann, 2010/04/23
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Ian Molton, 2010/04/23
- Re: [Qemu-devel] [PATCH 2/2] VirtIO RNG, Gerd Hoffmann, 2010/04/23