On Thu, May 21, 2020 at 03:53:17PM +0000, Brandon Bergren wrote: > Author: bdragon > Date: Thu May 21 15:53:16 2020 > New Revision: 361336 > URL: https://svnweb.freebsd.org/changeset/base/361336 > > Log: > [PowerPC] Fix kernel boot on powerpc > > Recent changes have caused the vmspace objects to start coming from KVA > instead of direct-mapped memory on powerpc. As far as I can tell, this is > not actually a problem, so we should stop arbitrarily asserting that it is. > > I do not know why this was not being triggered before.
UMA was recently changed in r357549 to use multi-page slabs if doing so would reduce internal fragmentation to a certain degree. In that case the slabs will be mapped into KVA. vmspace objects are quite large but smaller than a page, so they benefit from this. You can verify by checking the vm.uma.VMSPACE.keg.ppera sysctl, which gives the number of pages per slab. _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
