Il 08/01/2013 01:12, Rusty Russell ha scritto:
Unfortunately, that cannot work because not all architectures support
chained scatterlists.
WHAT? I can't figure out what an arch needs to do to support this?
It needs to use the iterator functions in its DMA driver.
But we don't care
Il 07/01/2013 01:02, Rusty Russell ha scritto:
Paolo Bonzini pbonz...@redhat.com writes:
Il 02/01/2013 06:03, Rusty Russell ha scritto:
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the caller to provide all the buffers in a
Paolo Bonzini pbonz...@redhat.com writes:
Il 07/01/2013 01:02, Rusty Russell ha scritto:
Paolo Bonzini pbonz...@redhat.com writes:
Il 02/01/2013 06:03, Rusty Russell ha scritto:
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the
Wanlong Gao gaowanl...@cn.fujitsu.com writes:
On 01/02/2013 01:03 PM, Rusty Russell wrote:
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the caller to provide all the buffers in a single call;
2) it does not support chained
Paolo Bonzini pbonz...@redhat.com writes:
Il 02/01/2013 06:03, Rusty Russell ha scritto:
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the caller to provide all the buffers in a single call;
2) it does not support chained
On 01/02/2013 01:03 PM, Rusty Russell wrote:
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the caller to provide all the buffers in a single call;
2) it does not support chained scatterlists: the buffers must be
provided as an
Paolo Bonzini pbonz...@redhat.com writes:
The virtqueue_add_buf function has two limitations:
1) it requires the caller to provide all the buffers in a single call;
2) it does not support chained scatterlists: the buffers must be
provided as an array of struct scatterlist;
Chained
Il 19/12/2012 11:47, Stefan Hajnoczi ha scritto:
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
+/**
+ * virtqueue_start_buf - start building buffer for the other end
+ * @vq: the struct virtqueue we're talking about.
+ * @buf: a struct keeping the state of the buffer
+ *
On Wed, Dec 19, 2012 at 01:04:08PM +0100, Paolo Bonzini wrote:
Il 19/12/2012 11:47, Stefan Hajnoczi ha scritto:
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
+/**
+ * virtqueue_start_buf - start building buffer for the other end
+ * @vq: the struct virtqueue we're talking
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
+/**
+ * virtqueue_start_buf - start building buffer for the other end
+ * @vq: the struct virtqueue we're talking about.
+ * @buf: a struct keeping the state of the buffer
+ * @data: the token identifying the buffer.
+ * @count:
Some comments without arguing about whether the performance
benefit is worth it.
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index cf8adb1..39d56c4 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
Il 18/12/2012 14:36, Michael S. Tsirkin ha scritto:
Some comments without arguing about whether the performance
benefit is worth it.
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index cf8adb1..39d56c4 100644
---
On Tue, Dec 18, 2012 at 02:43:51PM +0100, Paolo Bonzini wrote:
Il 18/12/2012 14:36, Michael S. Tsirkin ha scritto:
Some comments without arguing about whether the performance
benefit is worth it.
On Tue, Dec 18, 2012 at 01:32:48PM +0100, Paolo Bonzini wrote:
diff --git
Il 18/12/2012 14:59, Michael S. Tsirkin ha scritto:
Can't we track state internally to the virtqueue? Exposing it
seems to buy us nothing since you can't call add_buf between
start and end anyway.
I wanted to keep the state for these functions separate from the
rest. I don't think it makes
On Tue, Dec 18, 2012 at 03:32:15PM +0100, Paolo Bonzini wrote:
Il 18/12/2012 14:59, Michael S. Tsirkin ha scritto:
Can't we track state internally to the virtqueue? Exposing it
seems to buy us nothing since you can't call add_buf between
start and end anyway.
I wanted to keep the state
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