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Remove a workaround for mysterious junk appearing in the tlb of secondary

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cpus.  It turned out to be a bug in the loader.
This commit is contained in:
jake 2003-03-19 05:05:08 +00:00
parent 8e6e921cb8
commit ede6df2801
1 changed files with 0 additions and 19 deletions
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19
sys/sparc64/sparc64/mp_machdep.c
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@ -336,25 +336,6 @@ void
cpu_mp_bootstrap(struct pcpu *pc)
{
volatile struct cpu_start_args *csa;
u_long tag;
int i;
/*
* When secondary cpus start up they often have junk in their tlb.
* Sometimes both the lock bit and the valid bit will be set in the
* tlb entries, which can cause our locked mappings to be replaced,
* and other random behvaiour. The tags always seems to be zero, so
* we flush all mappings with a tag of zero, regardless of the lock
* and/or valid bits.
*/
for (i = 0; i < tlb_dtlb_entries; i++) {
tag = ldxa(TLB_DAR_SLOT(i), ASI_DTLB_TAG_READ_REG);
if (tag == 0)
stxa_sync(TLB_DAR_SLOT(i), ASI_DTLB_DATA_ACCESS_REG, 0);
tag = ldxa(TLB_DAR_SLOT(i), ASI_ITLB_TAG_READ_REG);
if (tag == 0)
stxa_sync(TLB_DAR_SLOT(i), ASI_ITLB_DATA_ACCESS_REG, 0);
}
csa = &cpu_start_args;
pmap_map_tsb();