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xen-devel
[Xen-devel] Re: [kvm-devel] [PATCH RFC 0/3] Virtio draft III
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To: |
Rusty Russell <rusty@xxxxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [kvm-devel] [PATCH RFC 0/3] Virtio draft III |
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From: |
Avi Kivity <avi@xxxxxxxxxxxx> |
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Date: |
Sun, 17 Jun 2007 17:14:55 +0300 |
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Cc: |
Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, Xen Mailing List <xen-devel@xxxxxxxxxxxxxxxxxxx>, "jmk@xxxxxxxxxxxxxxxxxxx" <jmk@xxxxxxxxxxxxxxxxxxx>, Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>, kvm-devel <kvm-devel@xxxxxxxxxxxxxxxxxxxxx>, virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Christian Borntraeger <cborntra@xxxxxxxxxx>, Latchesar Ionkov <lionkov@xxxxxxxx>, Suzanne McIntosh <skranjac@xxxxxxxxxx>, Martin Schwidefsky <schwidefsky@xxxxxxxxxx> |
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Sun, 17 Jun 2007 07:12:58 -0700 |
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Rusty Russell wrote:
In this episode, Rusty tries to NAPI-ize the driver and discovers that
virtio callbacks are a bad idea: NAPI needs to turn interrupts off and
still be able to query for new incoming packets.
Changes to core:
1) Back to "interrupt" model with get_inbuf()/get_outbuf() calls.
Seems to be these are just two different ways of iterating over the
pending buffers, and one could be implemented in terms of the other in a
few lines. I think that new new way is better, though, due to less
indirection.
btw, I'm not sure that the name 'virtio' is correct. Probably any
network or block driver which has support for batching (the vast
majority) could use this to good effect.
--
error compiling committee.c: too many arguments to function
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