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[SPARC64]: Kill PROM locked TLB entry preservation code.

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It is totally unnecessary complexity.  After we take over
the trap table, we handle all PROM tlb misses fully.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-01-31 18:33:25 -08:00
committed by David S. Miller
parent 6b6d017235
commit 3487d1d441
3 changed files with 10 additions and 296 deletions
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4
arch/sparc64/kernel/smp.c
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@@ -116,14 +116,10 @@ static void smp_setup_percpu_timer(void);
static volatile unsigned long callin_flag = 0;
extern void inherit_locked_prom_mappings(int save_p);
void __init smp_callin(void)
{
int cpuid = hard_smp_processor_id();
inherit_locked_prom_mappings(0);
__local_per_cpu_offset = __per_cpu_offset(cpuid);
__flush_tlb_all();

7
arch/sparc64/kernel/tsb.S
View File

@@ -178,13 +178,6 @@ __tsb_context_switch:
brz %o2, 9f
nop
/* We use entry 61 for this locked entry. This is the spitfire
* TLB entry number, and luckily cheetah masks the value with
* 15 ending us up with entry 13 which is what we want in that
* case too.
*
* XXX Interactions with prom_world()...
*/
sethi %hi(sparc64_highest_unlocked_tlb_ent), %o4
mov TLB_TAG_ACCESS, %g1
lduw [%o4 + %lo(sparc64_highest_unlocked_tlb_ent)], %g2