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[IA64] move SAL_CACHE_FLUSH check later in boot 

The check to see if the firmware drops interrupts during a
SAL_CACHE_FLUSH is done to early in the boot. SAL_CACHE_FLUSH expects
to be able to make PAL calls in virtual mode, on some cell based
machines a fault occurs causing a MCA. This patch moves the check
after mmu_context_init so the TLB and VHPT are properly setup.

Signed-off-by Troy Heber <troy.heber@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Troy Heber 2006-10-25 14:46:15 -06:00 committed by Tony Luck
parent 264b0f9930
commit fa1d19e5d9
3 changed files with 10 additions and 4 deletions
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11
arch/ia64/kernel/sal.c
View File

@ -223,12 +223,13 @@ static void __init sal_desc_ap_wakeup(void *p) { }
*/
static int sal_cache_flush_drops_interrupts;
static void __init
void __init
check_sal_cache_flush (void)
{
unsigned long flags;
int cpu;
u64 vector;
u64 vector, cache_type = 3;
struct ia64_sal_retval isrv;
cpu = get_cpu();
local_irq_save(flags);
@ -243,7 +244,10 @@ check_sal_cache_flush (void)
while (!ia64_get_irr(IA64_TIMER_VECTOR))
cpu_relax();
ia64_sal_cache_flush(3);
SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
if (isrv.status)
printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);
if (ia64_get_irr(IA64_TIMER_VECTOR)) {
vector = ia64_get_ivr();
@ -331,7 +335,6 @@ ia64_sal_init (struct ia64_sal_systab *systab)
p += SAL_DESC_SIZE(*p);
}
check_sal_cache_flush();
}
int

2
arch/ia64/kernel/setup.c
View File

@ -457,6 +457,8 @@ setup_arch (char **cmdline_p)
cpu_init(); /* initialize the bootstrap CPU */
mmu_context_init(); /* initialize context_id bitmap */
check_sal_cache_flush();
#ifdef CONFIG_ACPI
acpi_boot_init();
#endif

1
include/asm-ia64/sal.h
View File

@ -659,6 +659,7 @@ ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
}
extern s64 ia64_sal_cache_flush (u64 cache_type);
extern void __init check_sal_cache_flush (void);
/* Initialize all the processor and platform level instruction and data caches */
static inline s64