On Sat, 19 Apr 2008 01:15:15 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> It's not clear to me why this is in swap.c, but it exists
> even without CONFIG_SWAP, so that's OK.
We should have done mv mm/swap.c mm/mmlib.c years ago.
___
Virtualization m
On 4/18/08, Andrew Morton <[EMAIL PROTECTED]> wrote:
> On Sat, 19 Apr 2008 00:32:39 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
>
> > > Isn't this kinda-sorta like what a relayfs file does? The oprofile
> > > buffers? etc? Nothing in common at all, no hope?
> >
> > An excellent question,
On Sat, 19 Apr 2008 01:15:15 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> >
> > What is the maximum numbet of pages which an unpriviliged user can
> > concurrently pin with this code?
>
> Since only root can open the tun device, it's currently OK. The old code
> kmalloced and copied: is ther
On Sat, 19 Apr 2008 00:32:39 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> > Isn't this kinda-sorta like what a relayfs file does? The oprofile
> > buffers? etc? Nothing in common at all, no hope?
>
> An excellent question, but I thought the modern kernel etiquette was to only
> comment on
On Fri, Apr 18, 2008 at 7:55 PM, Ray Lee <[EMAIL PROTECTED]> wrote:
> On Fri, Apr 18, 2008 at 4:46 AM, pradeep singh rautela
> <[EMAIL PROTECTED]> wrote:
> >
> > On Fri, Apr 18, 2008 at 10:13 AM, Rusty Russell <[EMAIL PROTECTED]> wrote:
>
> > > + /* How many pages will this take?
On Fri, Apr 18, 2008 at 8:15 AM, Rusty Russell <[EMAIL PROTECTED]> wrote:
> On Friday 18 April 2008 21:31:20 Andrew Morton wrote:
> > On Fri, 18 Apr 2008 14:43:24 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
>
> > > + /* How many pages will this take? */
> > > + npages = 1 +
On Friday 18 April 2008 21:31:20 Andrew Morton wrote:
> On Fri, 18 Apr 2008 14:43:24 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> > + /* How many pages will this take? */
> > + npages = 1 + (base + len - 1)/PAGE_SIZE - base/PAGE_SIZE;
>
> Brain hurts. I hope you got that ri
On Fri, Apr 18, 2008 at 4:46 AM, pradeep singh rautela
<[EMAIL PROTECTED]> wrote:
>
> On Fri, Apr 18, 2008 at 10:13 AM, Rusty Russell <[EMAIL PROTECTED]> wrote:
> > + /* How many pages will this take? */
> > + npages = 1 + (base + len - 1)/PAGE_SIZE - base/PAGE_SIZE;
On Friday 18 April 2008 21:18:46 Andrew Morton wrote:
> > + /* Must be a power of two, and limit indices to a u16. */
> > + if (!num_descs || (num_descs & (num_descs-1)) || num_descs > 65536)
>
> We have an is_power_of_2().
Thanks, fixed.
> > + * vring_get - check out a vring file descriptor
On Sat, Apr 19, 2008 at 12:08:04AM +1000, Rusty Russell wrote:
> On Friday 18 April 2008 13:24:27 Herbert Xu wrote:
> > Finally this patch lets virtio_net receive GSO packets in addition
> > to sending them. This can definitely be optimised for the non-GSO
> > case. For comparison the Xen approac
On Friday 18 April 2008 13:24:27 Herbert Xu wrote:
> Finally this patch lets virtio_net receive GSO packets in addition
> to sending them. This can definitely be optimised for the non-GSO
> case. For comparison the Xen approach stores one page in each skb
> and uses subsequent skb's pages to cons
On Fri, Apr 18, 2008 at 10:13 AM, Rusty Russell <[EMAIL PROTECTED]> wrote:
> This patch modifies tun to allow a vringfd to specify the send
> buffer. The user does a write to push out packets from the buffer.
>
> Again we use the 'struct virtio_net_hdr' to allow userspace to send
> GSO packets.
On Fri, 18 Apr 2008 14:43:24 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> This patch modifies tun to allow a vringfd to specify the send
> buffer. The user does a write to push out packets from the buffer.
>
> Again we use the 'struct virtio_net_hdr' to allow userspace to send
> GSO packets.
On Fri, 18 Apr 2008 14:39:48 +1000 Rusty Russell <[EMAIL PROTECTED]> wrote:
> virtio introduced a ring structure ABI for guest-host communications
> (currently used by lguest and kvm). Using this same ABI, we can
> create a nice fd version.
>
> This is useful for efficiently passing packets to a
On Fri, Apr 18, 2008 at 2:39 PM, Amit Shah <[EMAIL PROTECTED]> wrote:
> * On Monday 14 Apr 2008 06:01:07 Samuel Masham wrote:
> >
> > Please keep the userspace support alive.
> >
> > I am particularly interested in using the pci-passthough to qemu
> > running non x86 system emulation
> > (at
15 matches
Mail list logo
