On 07/22/2013 10:49 AM, David Vrabel wrote:

Hi,

I have made the for-centos-v5 branch available on

git://xenbits.xen.org/people/dvrabel/linux.git

This is based on 3.4.54 and includes the following additional fixes (since the for-centos-v4 branch).

• x86/xen: during early setup, only 1:1 map the ISA region

Fixes a boot failure if tboot is used.

• xen/evtchn: avoid a deadlock when unbinding an event channel

Fixes a potential deadlock by users (e.g., qemu, xenstored) of /dev/xen/evtchn.

You may also wish to consider enabling CONFIG_XEN_BALLOON_MEMORY_HOTPLUG. The kernel bug that was causing problems is already fixed (by xen/balloon: Subtract from xen_released_pages the count that is populated) and now that dom0 will not try to auto-balloon by default, enabling this option should no longer cause problems in dom0.

This option is required to increase the amount of memory in a guest using this kernel above the initial amount.

David,

There are two unset Xen ballon options ... they are:

# CONFIG_XEN_SELFBALLOONING is not set # CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set

I see that you have recommended:

CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y

what about:

CONFIG_XEN_SELFBALLOONING

(Leave it unset or set it to yes as well)

Thanks, Johnny Hughes