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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-07 21:51:08 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:55 -0800 |
| commit | 481295f982b21b1dbe71cbf41d3a93028fee30d1 (patch) | |
| tree | 5b1af84a7f83021698bcf138c8875d7290e65282 /arch/sparc64/mm/init.c | |
| parent | 89a5264f065672a882f555228000614a6b2182b7 (diff) | |
| download | lwn-481295f982b21b1dbe71cbf41d3a93028fee30d1.tar.gz lwn-481295f982b21b1dbe71cbf41d3a93028fee30d1.zip | |
[SPARC64]: Register per-cpu fault status area with sun4v hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/init.c')
| -rw-r--r-- | arch/sparc64/mm/init.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index e9aac424877f..4c95cf34075b 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -40,6 +40,7 @@ #include <asm/spitfire.h> #include <asm/sections.h> #include <asm/tsb.h> +#include <asm/hypervisor.h> extern void device_scan(void); @@ -1083,6 +1084,24 @@ static void __init tsb_phys_patch(void) } } +/* Register this cpu's fault status area with the hypervisor. */ +void __cpuinit sun4v_register_fault_status(void) +{ + register unsigned long arg0 asm("%o0"); + register unsigned long arg1 asm("%o1"); + int cpu = hard_smp_processor_id(); + struct trap_per_cpu *tb = &trap_block[cpu]; + unsigned long pa; + + pa = kern_base + ((unsigned long) tb - KERNBASE); + arg0 = HV_FAST_MMU_FAULT_AREA_CONF; + arg1 = pa; + __asm__ __volatile__("ta %4" + : "=&r" (arg0), "=&r" (arg1) + : "0" (arg0), "1" (arg1), + "i" (HV_FAST_TRAP)); +} + /* paging_init() sets up the page tables */ extern void cheetah_ecache_flush_init(void); @@ -1096,12 +1115,17 @@ void __init paging_init(void) unsigned long end_pfn, pages_avail, shift; unsigned long real_end, i; + kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL; + kern_size = (unsigned long)&_end - (unsigned long)KERNBASE; + if (tlb_type == cheetah_plus || tlb_type == hypervisor) tsb_phys_patch(); - if (tlb_type == hypervisor) + if (tlb_type == hypervisor) { sun4v_patch_tlb_handlers(); + sun4v_register_fault_status(); + } /* Find available physical memory... */ read_obp_memory("available", &pavail[0], &pavail_ents); @@ -1112,9 +1136,6 @@ void __init paging_init(void) pfn_base = phys_base >> PAGE_SHIFT; - kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL; - kern_size = (unsigned long)&_end - (unsigned long)KERNBASE; - set_bit(0, mmu_context_bmap); shift = kern_base + PAGE_OFFSET - ((unsigned long)KERNBASE); |