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Code Issues Releases Activity

Purge the translation cache of APs before we unleash them. To that

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end, make pmap_invalidate_all() global and have it only handle the
local CPU -- i.e. no rendezvous. We do not use pmap_invalidate_all
other than during initialization.
Note that the BSP already purges its TC -- it was missing for APs
only. Nonetheless, this so far seems to eliminate random problems.
This commit is contained in:
Marcel Moolenaar 2013-10-31 23:06:04 +00:00
parent f955880f7b
commit 3598d9555a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=257477
3 changed files with 6 additions and 18 deletions
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2
sys/ia64/ia64/mp_machdep.c
View File

@ -240,6 +240,8 @@ ia64_ap_startup(void)
KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread"));
PCPU_SET(curthread, PCPU_GET(idlethread));
pmap_invalidate_all();
atomic_add_int(&ia64_ap_state.as_awake, 1);
while (!smp_started)
cpu_spinwait();

21
sys/ia64/ia64/pmap.c
View File

@ -262,7 +262,6 @@ static vm_page_t pmap_pv_reclaim(pmap_t locked_pmap);
static void pmap_enter_quick_locked(pmap_t pmap, vm_offset_t va,
vm_page_t m, vm_prot_t prot);
static void pmap_free_pte(struct ia64_lpte *pte, vm_offset_t va);
static void pmap_invalidate_all(void);
static int pmap_remove_pte(pmap_t pmap, struct ia64_lpte *pte,
vm_offset_t va, pv_entry_t pv, int freepte);
static int pmap_remove_vhpt(vm_offset_t va);
@ -537,13 +536,12 @@ pmap_invalidate_page(vm_offset_t va)
critical_exit();
}
static void
pmap_invalidate_all_1(void *arg)
void
pmap_invalidate_all(void)
{
uint64_t addr;
int i, j;
critical_enter();
addr = pmap_ptc_e_base;
for (i = 0; i < pmap_ptc_e_count1; i++) {
for (j = 0; j < pmap_ptc_e_count2; j++) {
@ -552,20 +550,7 @@ pmap_invalidate_all_1(void *arg)
}
addr += pmap_ptc_e_stride1;
}
critical_exit();
}
static void
pmap_invalidate_all(void)
{
#ifdef SMP
if (mp_ncpus > 1) {
smp_rendezvous(NULL, pmap_invalidate_all_1, NULL, NULL);
return;
}
#endif
pmap_invalidate_all_1(NULL);
ia64_srlz_i();
}
static uint32_t

1
sys/ia64/include/pmap.h
View File

@ -122,6 +122,7 @@ extern int pmap_vhpt_log2size;
vm_offset_t pmap_alloc_vhpt(void);
void pmap_bootstrap(void);
void pmap_invalidate_all(void);
void pmap_kenter(vm_offset_t va, vm_offset_t pa);
vm_paddr_t pmap_kextract(vm_offset_t va);
void pmap_kremove(vm_offset_t);