Hi, I''m trying to configure vanilla kernel 3.5 to include pv on hvm drivers and I''m struggling to find the right combination of options, if I enable CONFIG_PARAVIRT_GUEST then options such as CONFIG_XEN_BLKDEV_FRONTEND become available, but I believe they are the pv guest drivers are they not? What do I need to enable to use PV on HVM? I don''t want to run a paravirtualised guest because I will be attempting PCI passthrough of nvidia graphics cards and usb controllers, which will only work with a HVM domU. According to this page http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers I should see options for xen-blkfront for disk, and xen-netfront for network, but searching for those drivers in the kernel config finds no matches as all. I''m rather new to this pvops stuff, until yesterday I used a Xenified openSUSE patchset.... Thanks Andy
On Fri, Jul 27, 2012 at 10:25 PM, Andrew Lyon <andrew.lyon@gmail.com> wrote:> Hi, > > I''m trying to configure vanilla kernel 3.5 to include pv on hvm > drivers and I''m struggling to find the right combination of options, > if I enable CONFIG_PARAVIRT_GUEST then options such as > CONFIG_XEN_BLKDEV_FRONTEND become available, but I believe they are > the pv guest drivers are they not? > > What do I need to enable to use PV on HVM? I don''t want to run a > paravirtualised guest because I will be attempting PCI passthrough of > nvidia graphics cards and usb controllers, which will only work with a > HVM domU. > > According to this page > http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers I should see > options for xen-blkfront for disk, and xen-netfront for network, but > searching for those drivers in the kernel config finds no matches as > all. > > I''m rather new to this pvops stuff, until yesterday I used a Xenified > openSUSE patchset.... > > Thanks > AndyOr.. have I misunderstood, are the drivers for PV guest and PV on HVM actually the same, the difference being how the domU is loaded? (loading the kernel in the domU config file vs builder=''hvm'') Seems logical, if somebody could confirm that I''d appreciate it. Andy
On Fri, 2012-07-27 at 22:30 +0100, Andrew Lyon wrote:> On Fri, Jul 27, 2012 at 10:25 PM, Andrew Lyon <andrew.lyon@gmail.com> wrote: > > Hi, > > > > I''m trying to configure vanilla kernel 3.5 to include pv on hvm > > drivers and I''m struggling to find the right combination of options, > > if I enable CONFIG_PARAVIRT_GUEST then options such as > > CONFIG_XEN_BLKDEV_FRONTEND become available, but I believe they are > > the pv guest drivers are they not? > > > > What do I need to enable to use PV on HVM? I don''t want to run a > > paravirtualised guest because I will be attempting PCI passthrough of > > nvidia graphics cards and usb controllers, which will only work with a > > HVM domU. > > > > According to this page > > http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers I should see > > options for xen-blkfront for disk, and xen-netfront for network, but > > searching for those drivers in the kernel config finds no matches as > > all. > > > > I''m rather new to this pvops stuff, until yesterday I used a Xenified > > openSUSE patchset.... > > > > Thanks > > Andy > > Or.. have I misunderstood, are the drivers for PV guest and PV on HVM > actually the same, the difference being how the domU is loaded? > (loading the kernel in the domU config file vs builder=''hvm'') > > Seems logical, if somebody could confirm that I''d appreciate it.Yes, that''s right. The PV drivers are the same the "on HVM" bit refers to the type of the virtual machine being HVM. Ian.