stable/for-linus-3.6-rc0-tag

 * Performance improvement to lower the amount of traps the hypervisor
   has to do 32-bit guests. Mainly for setting PTE entries and updating
   TLS descriptors.
 * MCE polling driver to collect hypervisor MCE buffer and present them to
   /dev/mcelog.
 * Physical CPU online/offline support. When an privileged guest is booted
   it is present with virtual CPUs, which might have an 1:1 to physical
   CPUs but usually don't. This provides mechanism to offline/online physical
   CPUs.
Bug-fixes for:
 * Coverity found fixes in the console and ACPI processor driver.
 * PVonHVM kexec fixes along with some cleanups.
 * Pages that fall within E820 gaps and non-RAM regions (and had been
   released to hypervisor) would be populated back, but potentially in
   non-RAM regions.