diff options
| author | Fernando Luis VazquezCao <fernando@oss.ntt.co.jp> | 2007-05-02 19:27:17 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:17 +0200 |
| commit | 3144c332fa2ee4c4b9804aae5fe31098f04bffd9 (patch) | |
| tree | b69b89eef10b169f8486c18cdaf374dd2339eba2 | |
| parent | 4312fa8157f5ebdaf36e615cf40f9d7a6137a22c (diff) | |
[PATCH] x86-64: use safe_apic_wait_icr_idle in smpboot.c - x86_64
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>
| -rw-r--r-- | arch/x86_64/kernel/smpboot.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index f2a234b390e..082f478fb77 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -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]); |