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authorDavid S. Miller <davem@davemloft.net>2006-01-31 18:29:18 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:11:13 -0800
commit74bf4312fff083ab25c3f357cc653ada7995e5f6 (patch)
treec23dea461e32485f4cd7ca4b8c33c632655eb906 /arch/sparc64/mm/Makefile
parent30d4d1ffed7098afe2641536d67eef150499da02 (diff)
downloadlinux-2.6.34-ux500-74bf4312fff083ab25c3f357cc653ada7995e5f6.tar.gz
[SPARC64]: Move away from virtual page tables, part 1.
We now use the TSB hardware assist features of the UltraSPARC MMUs. SMP is currently knowingly broken, we need to find another place to store the per-cpu base pointers. We hid them away in the TSB base register, and that obviously will not work any more :-) Another known broken case is non-8KB base page size. Also noticed that flush_tlb_all() is not referenced anywhere, only the internal __flush_tlb_all() (local cpu only) is used by the sparc64 port, so we can get rid of flush_tlb_all(). The kernel gets it's own 8KB TSB (swapper_tsb) and each address space gets it's own private 8K TSB. Later we can add code to dynamically increase the size of per-process TSB as the RSS grows. An 8KB TSB is good enough for up to about a 4MB RSS, after which the TSB starts to incur many capacity and conflict misses. We even accumulate OBP translations into the kernel TSB. Another area for refinement is large page size support. We could use a secondary address space TSB to handle those. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/Makefile')
-rw-r--r--arch/sparc64/mm/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/mm/Makefile b/arch/sparc64/mm/Makefile
index 9d0960e69f4..e415bf942bc 100644
--- a/arch/sparc64/mm/Makefile
+++ b/arch/sparc64/mm/Makefile
@@ -5,6 +5,6 @@
EXTRA_AFLAGS := -ansi
EXTRA_CFLAGS := -Werror
-obj-y := ultra.o tlb.o fault.o init.o generic.o
+obj-y := ultra.o tlb.o tsb.o fault.o init.o generic.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o