On Sun, 02 Nov 2014 07:27:24 -0800 Nathan Whitehorn <nwhiteh...@freebsd.org> wrote: > There is actually a write-combining memory type on PowerPC. You can set > it the same way as on x86 (with VM_MEMATTR_WRITE_COMBINING).
Yes, that's what the patch does, but in sys/powerpc (aim/mmu_oea.c, aim/mmu_oea64.c and booke/pmap.c) VM_MEMATTR_WRITE_COMBINING becomes PTE_I meaning Caching Inhibited. Does powerpc do write-combining for this type? That code also maps VM_MEMATTR_WRITE_BACK to PTE_I by the way. I think that should be PTE_M (write-back caching + cache coherency). _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
