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[PATCH] i386: use safe_apic_wait_icr_idle in smpboot.c

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__inquire_remote_apic is used for APIC debugging, so use
safe_apic_wait_icr_idle  instead of apic_wait_icr_idle to avoid possible
lockups when APIC delivery fails.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Fernando Luis VazquezCao
2007-05-02 19:27:17 +02:00
committed by Andi Kleen
parent ea8c733b98
commit 4312fa8157
1 changed files with 5 additions and 2 deletions
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7
arch/i386/kernel/smpboot.c
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@ -521,7 +521,8 @@ static inline void __inquire_remote_apic(int apicid)
{ {
int i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 }; int i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
char *names[] = { "ID", "VERSION", "SPIV" }; char *names[] = { "ID", "VERSION", "SPIV" };
int timeout, status; int timeout;
unsigned long status;
printk("Inquiring remote APIC #%d...\n", apicid); printk("Inquiring remote APIC #%d...\n", apicid);
@ -531,7 +532,9 @@ static inline void __inquire_remote_apic(int apicid)
/* /*
* Wait for idle. * Wait for idle.
*/ */
apic_wait_icr_idle(); status = safe_apic_wait_icr_idle();
if (status)
printk("a previous APIC delivery may have failed\n");
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
apic_write_around(APIC_ICR, APIC_DM_REMRD | regs[i]); apic_write_around(APIC_ICR, APIC_DM_REMRD | regs[i]);