Hi, everybody,
Went to give PVH a try, seeing as we have 4.4 and 3.14 now in f20, but:
# grep XEN.*PV /boot/config-3.14.4-200.fc20.x86_64 CONFIG_XEN_PVHVM=y # CONFIG_XEN_PVH is not set CONFIG_XEN_HAVE_PVMMU=y
:(
Does anybody want to talk me out of recompiling my kernel to try it out? If it's working should we ask for the f20 build to enable it? The docs make it sound like PVH is how we're going to be running everything in the not-too-distant future (and the design looks very sensible to me).
Just finished replacing my AMD SOHO box with a Xeon 2620 box to give it a go (and also never got the AMD/UEFI box to properly allocate memory pages to Dom0) which made ZFS unbearable; now at this stage.
-Bill
On Tue, Jun 03, 2014 at 02:12:17PM -0400, Bill McGonigle wrote:
Hi, everybody,
Went to give PVH a try, seeing as we have 4.4 and 3.14 now in f20, but:
# grep XEN.*PV /boot/config-3.14.4-200.fc20.x86_64 CONFIG_XEN_PVHVM=y # CONFIG_XEN_PVH is not set CONFIG_XEN_HAVE_PVMMU=y
:(
Does anybody want to talk me out of recompiling my kernel to try it out? If it's working should we ask for the f20 build to enable it? The docs make it sound like PVH is how we're going to be running everything in the not-too-distant future (and the design looks very sensible to me).
Yeah, but it is not yet baked - we still have some bugs before we open the floodgates.
Just finished replacing my AMD SOHO box with a Xeon 2620 box to give it a go (and also never got the AMD/UEFI box to properly allocate memory pages to Dom0) which made ZFS unbearable; now at this stage.
And for example it does not work at all under AMD :-)
-Bill
-- Bill McGonigle, Owner BFC Computing, LLC http://bfccomputing.com/ Telephone: +1.855.SW.LIBRE Email, IM, VOIP: bill@bfccomputing.com VCard: http://bfccomputing.com/vcard/bill.vcf Social networks: bill_mcgonigle/bill.mcgonigle -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
On Tue, Jun 03, 2014 at 02:12:17PM -0400, Bill McGonigle wrote:
Hi, everybody,
Went to give PVH a try, seeing as we have 4.4 and 3.14 now in f20, but:
# grep XEN.*PV /boot/config-3.14.4-200.fc20.x86_64 CONFIG_XEN_PVHVM=y # CONFIG_XEN_PVH is not set CONFIG_XEN_HAVE_PVMMU=y
Posting my notes here, in case anybody else is trying it and wants to compare. I haven't yet had luck getting a pvh domU to launch. I think I'm doing what the documentation calls for, but clearly something is missing.
Current bits are up here: https://www.bfccomputing.com/downloads/fedora/xen/f20/
I've got Xen 4.4 booting and a kernel built with PVH support, but when starting a domU with 'pvh=1' I get:
xc_dom_parse_image: unsupported feature requested
and the domain fails to build. I did verify that BUILD/kernel-foo/.config is getting the entry, and it sure looks like the symbols are in the kernel:
[root@librescu xen]# grep -i pvh /boot/config-3.14.4-200.xenpvh.fc20.x86_64 /boot/System.map-3.14.4-200.xenpvh.fc20.x86_64 /boot/config-3.14.4-200.xenpvh.fc20.x86_64:# Linux/x86_64 3.14.4-200.xenpvh.fc20.x86_64 Kernel Configuration /boot/config-3.14.4-200.xenpvh.fc20.x86_64:CONFIG_XEN_PVHVM=y /boot/config-3.14.4-200.xenpvh.fc20.x86_64:CONFIG_XEN_PVH=y /boot/System.map-3.14.4-200.xenpvh.fc20.x86_64:ffffffff81004340 t xen_pvh_set_cr_flags /boot/System.map-3.14.4-200.xenpvh.fc20.x86_64:ffffffff816e04d0 T xen_pvh_secondary_vcpu_init /boot/System.map-3.14.4-200.xenpvh.fc20.x86_64:ffffffff81d2a0a9 t xen_pvh_gnttab_setup /boot/System.map-3.14.4-200.xenpvh.fc20.x86_64:ffffffff81e5fd48 t __initcall_xen_pvh_gnttab_setup1 [root@librescu xen]# uname -r 3.14.4-200.xenpvh.fc20.x86_64
So, I'm not sure what's up. I added "loglvl=all guest_loglvl=all" to grub and can get another reboot in this weekend to see if there's any more info logged.
It also looks like I should update my 4.4 tarball to the stable-4.4 branch for non-broken guest shutdowns (but one step at a time).
-Bill
xen@lists.stg.fedoraproject.org