Searched hist:240983 (Results 1 - 2 of 2) sorted by relevance
| /freebsd-11-stable/sys/arm/include/ | ||
| H A D | pmap-v4.h | diff 240983 Thu Sep 27 03:41:40 MDT 2012 alc Implementing pmap_kextract(va) as pmap_extract(kernel_pmap, va) is problematic because some callers to pmap_kextract() expect its implementation to be lock-less. In particular, uma_dbg_alloc() implicitly requires this. Otherwise, lock-order reversals occur between pmap locks and UMA zone locks. So, this change introduces a lock-less implementation of pmap_kextract(). Disable recursion on the pvh global lock in the new armv6 pmap. While recursion on this locks occurs in the old arm pmap, it thankfully doesn't occur in the armv6 pmap. Tested by: jmg |
| /freebsd-11-stable/sys/arm/arm/ | ||
| H A D | pmap-v4.c | diff 240983 Thu Sep 27 03:41:40 MDT 2012 alc Implementing pmap_kextract(va) as pmap_extract(kernel_pmap, va) is problematic because some callers to pmap_kextract() expect its implementation to be lock-less. In particular, uma_dbg_alloc() implicitly requires this. Otherwise, lock-order reversals occur between pmap locks and UMA zone locks. So, this change introduces a lock-less implementation of pmap_kextract(). Disable recursion on the pvh global lock in the new armv6 pmap. While recursion on this locks occurs in the old arm pmap, it thankfully doesn't occur in the armv6 pmap. Tested by: jmg |
Completed in 192 milliseconds