X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Fppc%2Fbackend-parms.lisp;h=e20c1c228e4f41afa6da78b78291cdb5079c0d94;hb=9304704f68a18894fa8eb985b387465e5d25e1d5;hp=cfb3bb487953617dbf765070d801a36287e955dd;hpb=2db410feb35e7e30c95af8f20f67e6177fa92488;p=sbcl.git

diff --git a/src/compiler/ppc/backend-parms.lisp b/src/compiler/ppc/backend-parms.lisp
index cfb3bb4..e20c1c2 100644
--- a/src/compiler/ppc/backend-parms.lisp
+++ b/src/compiler/ppc/backend-parms.lisp
@@ -12,6 +12,15 @@
   ;; just use 4k everywhere.
   (setf *backend-page-bytes* #!+linux 65536 #!-linux 4096))
 
-;;; The size in bytes of the GENCGC pages. Should be a multiple of the
-;;; architecture page size.
-(def!constant gencgc-page-bytes *backend-page-bytes*)
+;;; The size in bytes of GENCGC cards, i.e. the granularity at which
+;;; writes to old generations are logged.  With mprotect-based write
+;;; barriers, this must be a multiple of the OS page size.
+(def!constant gencgc-card-bytes *backend-page-bytes*)
+;;; The minimum size of new allocation regions.  While it doesn't
+;;; currently make a lot of sense to have a card size lower than
+;;; the alloc granularity, it will, once we are smarter about finding
+;;; the start of objects.
+(def!constant gencgc-alloc-granularity 0)
+;;; The minimum size at which we release address ranges to the OS.
+;;; This must be a multiple of the OS page size.
+(def!constant gencgc-release-granularity *backend-page-bytes*)