redonkable/alistair23-linux
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[SPARC64]: Register per-cpu fault status area with sun4v hypervisor.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-07 21:51:08 -08:00
parent 89a5264f06
commit 481295f982
3 changed files with 29 additions and 4 deletions
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3
arch/sparc64/kernel/smp.c
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@ -122,6 +122,9 @@ void __init smp_callin(void)
__local_per_cpu_offset = __per_cpu_offset(cpuid);
if (tlb_type == hypervisor)
sun4v_register_fault_status();
__flush_tlb_all();
smp_setup_percpu_timer();

29
arch/sparc64/mm/init.c
View file

@ -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);

1
include/asm-sparc64/pgtable.h
View file

@ -437,6 +437,7 @@ extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
#define HAVE_ARCH_FB_UNMAPPED_AREA
extern void pgtable_cache_init(void);
extern void sun4v_register_fault_status(void);
#endif /* !(__ASSEMBLY__) */