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Replace "__asm __volatile()" by equivalent support functions from

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ia64_cpu.h. This improves readability and consistency and aids in
auditing the code.
Add data-serialization after writing to the region registers and
add instruction-serialization after writing to cr.pta.

Approved by: re (blanket)
This commit is contained in:
Marcel Moolenaar 2007-08-04 19:36:14 +00:00
parent 09363c3636
commit 7c31469f67
1 changed files with 5 additions and 3 deletions
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8
sys/ia64/ia64/pmap.c
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@ -450,8 +450,9 @@ pmap_bootstrap()
}
map_vhpt(pmap_vhpt_base[0]);
__asm __volatile("mov cr.pta=%0;; srlz.i;;" ::
"r" (pmap_vhpt_base[0] + (1<<8) + (pmap_vhpt_log2size<<2) + 1));
ia64_set_pta(pmap_vhpt_base[0] + (1 << 8) +
(pmap_vhpt_log2size << 2) + 1);
ia64_srlz_i();
virtual_avail = VM_MIN_KERNEL_ADDRESS;
virtual_end = VM_MAX_KERNEL_ADDRESS;
@ -480,6 +481,7 @@ pmap_bootstrap()
*/
ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (IA64_ID_PAGE_SHIFT << 2));
ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (IA64_ID_PAGE_SHIFT << 2));
ia64_srlz_d();
/*
* Clear out any random TLB entries left over from booting.
@ -2254,7 +2256,7 @@ pmap_switch(pmap_t pm)
atomic_set_32(&pm->pm_active, PCPU_GET(cpumask));
}
PCPU_SET(current_pmap, pm);
__asm __volatile("srlz.d");
ia64_srlz_d();
out:
critical_exit();