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...> Ben. Hmm I don't understand this last sentence. features are actually reliably propagated to virtio devices. > -- > Ben Hutchings > Experience is directly proportional to the value of equipment destroyed. > - Carolyn Scheppner

...> Ben. Hmm I don't understand this last sentence. features are actually reliably propagated to virtio devices. > -- > Ben Hutchings > Experience is directly proportional to the value of equipment destroyed. > - Carolyn Scheppner

Commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4 ("drivers/net: Disable UFO through virtio") breaks live migration of KVM guests from older to newer host kernels: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3d0ad09412ffe00c9afa201d01effdb6023d09b4 The problem occurs when a guest running on a host kernel without commit 3d0ad0941 in tun.ko attempts to live

Commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4 ("drivers/net: Disable UFO through virtio") breaks live migration of KVM guests from older to newer host kernels: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3d0ad09412ffe00c9afa201d01effdb6023d09b4 The problem occurs when a guest running on a host kernel without commit 3d0ad0941 in tun.ko attempts to live

...y continue to support it even if it's not advertised because the tap features don't reliably get propagated to virtio devices. Ben. -- Ben Hutchings Experience is directly proportional to the value of equipment destroyed. - Carolyn Scheppner -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 811 bytes Desc: This is a digitally signed message part URL: <http://lists.linuxfoundation.org/pipermail/virtualization/attachments/20141111/7d1a8308/attachment...

...to do something different (since > IRQ balancing should work as on native). At least kernels that support SMP could recommend it. Ben. -- Ben Hutchings Experience is directly proportional to the value of equipment destroyed. - Carolyn Scheppner -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 811 bytes Desc: This is a digitally signed message part URL: <http://lists.alioth.debian.org/pipermail/pkg-xen-devel/attachments/20140904/8b167e46/attachment.si...

...UN_F_UFO; > + } > } > > /* This gives the user a way to test for new features in future by > > > -- > Ben Hutchings > Experience is directly proportional to the value of equipment destroyed. > - Carolyn Scheppner -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 473 bytes Desc: not available URL: <http://lists.linuxfoundation.org/pipermail/virtualization/attachments/20141112/478cbe5a/attachment.sig>

(copying debian-kernel for reasons which will hopefully become obvious) On Mon, 8 Jul 2013 18:10:58 +0200 =?UTF-8?Q?Moritz_M=C3=BChlenhoff?= <jmm at inutil.org> wrote: > In current Debian kernel there's no special Xen dom0 kernel image and depending > on irqbalance in the kernel package would be overkill. Would it? I thought irqbalance is actually required even for native with

...) { + features |= NETIF_F_UFO; + arg &= ~TUN_F_UFO; + } } /* This gives the user a way to test for new features in future by -- Ben Hutchings Experience is directly proportional to the value of equipment destroyed. - Carolyn Scheppner -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 811 bytes Desc: This is a digitally signed message part URL: <http://lists.linuxfoundation.org/pipermail/virtualization/attachments/20141111/2660bc38/attachment...

...) { + features |= NETIF_F_UFO; + arg &= ~TUN_F_UFO; + } } /* This gives the user a way to test for new features in future by -- Ben Hutchings Experience is directly proportional to the value of equipment destroyed. - Carolyn Scheppner -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 811 bytes Desc: This is a digitally signed message part URL: <http://lists.linuxfoundation.org/pipermail/virtualization/attachments/20141111/2660bc38/attachment...