Author: marcel
Date: Fri Nov 1 01:32:01 2013
New Revision: 257487
URL: http://svnweb.freebsd.org/changeset/base/257487
Log:
Use LOG2_ID_PAGE_SIZE again for the identity mapping in regions 6 & 7.
Make the default translation size the same as the PBVM page size to
avoid inserting overlapping translations in the TC. That generally is
very bad.
Modified:
head/sys/ia64/ia64/machdep.c
head/sys/ia64/ia64/mp_machdep.c
head/sys/ia64/include/param.h
Modified: head/sys/ia64/ia64/machdep.c
==============================================================================
--- head/sys/ia64/ia64/machdep.c Fri Nov 1 00:45:08 2013
(r257486)
+++ head/sys/ia64/ia64/machdep.c Fri Nov 1 01:32:01 2013
(r257487)
@@ -716,8 +716,8 @@ ia64_init(void)
* handlers. Here we just make sure that they have the largest
* possible page size to minimise TLB usage.
*/
- ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (PAGE_SHIFT << 2));
- ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (PAGE_SHIFT << 2));
+ ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (LOG2_ID_PAGE_SIZE << 2));
+ ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (LOG2_ID_PAGE_SIZE << 2));
ia64_srlz_d();
/* Initialize/setup physical memory datastructures */
Modified: head/sys/ia64/ia64/mp_machdep.c
==============================================================================
--- head/sys/ia64/ia64/mp_machdep.c Fri Nov 1 00:45:08 2013
(r257486)
+++ head/sys/ia64/ia64/mp_machdep.c Fri Nov 1 01:32:01 2013
(r257487)
@@ -208,8 +208,8 @@ ia64_ap_startup(void)
ia64_ap_state.as_trace = 0x100;
ia64_set_rr(IA64_RR_BASE(5), (5 << 8) | (PAGE_SHIFT << 2) | 1);
- ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (PAGE_SHIFT << 2));
- ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (PAGE_SHIFT << 2));
+ ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (LOG2_ID_PAGE_SIZE << 2));
+ ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (LOG2_ID_PAGE_SIZE << 2));
ia64_srlz_d();
pcpup = ia64_ap_state.as_pcpu;
Modified: head/sys/ia64/include/param.h
==============================================================================
--- head/sys/ia64/include/param.h Fri Nov 1 00:45:08 2013
(r257486)
+++ head/sys/ia64/include/param.h Fri Nov 1 01:32:01 2013
(r257487)
@@ -105,6 +105,11 @@
#endif
#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0
disables */
+/* The default size of identity mappings in region 6 & 7. */
+#ifndef LOG2_ID_PAGE_SIZE
+#define LOG2_ID_PAGE_SIZE 16
+#endif
+
/*
* Mach derived conversion macros
*/
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