[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-users] Re: calculating the needed swiotlb in dom0

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Christopher Isip" <cmisip@xxxxxxxxx>
  • Date: Wed, 28 May 2008 08:30:54 -0400
  • Delivery-date: Wed, 28 May 2008 05:31:44 -0700
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=n4ULN7tpm4whXakCbjjZgN8B/xskmRbT9qZGjWtFkq04rHF3bv+KEMUb4/4tUjvSggRZHVAEaL28smoibKdCmSW/MjEhi7kkbZjuL7yKH1QZun2qWuTaZ2yb5CoDgZFbI7wFelgIPf3xcVLaeMbff1ER1mgZsZVe266WIKGp8sM=
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

I just found out that setting swiotlb=128 in dom0 grub.conf allowed me to run my mythtv domU with additonal options to ivtv:
in /etc/modprobe.d/options
options ivtv enc_mpg_buffers=8

Setting this to any higher value causes a kernel panic.   I want to be able to specify
options ivtv enc_mpg_buffers=16 enc_vbi_buffers=8

How much swiotlb do I need? Is there a way to figure this out or is it just trial and error.


Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.