K 10
svn:author
V 6
luporl
K 8
svn:date
V 27
2019-07-25T15:27:05.373393Z
K 7
svn:log
V 418
powerpc: Improve pvo allocation code

Added allocation retry loop in alloc_pvo_entry(), to wait for
memory to become available if the caller specifies the M_WAITOK flag.

Also, the loop in moa64_enter() was removed, as moea64_pvo_enter()
never returns ENOMEM. It is alloc_pvo_entry() memory allocation that
can fail and must be retried.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D21035

END