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[PATCH] x86-64: use safe_apic_wait_icr_idle in smpboot.c - x86_64

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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 4312fa8157
commit 3144c332fa
1 changed files with 5 additions and 2 deletions
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7
arch/x86_64/kernel/smpboot.c
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@ -391,7 +391,8 @@ static void inquire_remote_apic(int apicid)
{
unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
char *names[] = { "ID", "VERSION", "SPIV" };
int timeout, status;
int timeout;
unsigned int status;
printk(KERN_INFO "Inquiring remote APIC #%d...\n", apicid);
@ -401,7 +402,9 @@ static void inquire_remote_apic(int apicid)
/*
* 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(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
apic_write(APIC_ICR, APIC_DM_REMRD | regs[i]);