[PATCH] x86_64: Fix apicid versus cpu# confusion.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Ok being impatient not wanting this tiny bug to be forgotten for
2.6.13.  Linus please apply this micro patch.

> >  static void __cpuinit tsc_sync_wait(void)
> >  {
> >  	if (notscsync || !cpu_has_tsc)
> >  		return;
> > - printk(KERN_INFO "CPU %d: Syncing TSC to CPU %u.\n", smp_processor_id(),
> > -			boot_cpu_id);
> > -	sync_tsc();
> > +	sync_tsc(boot_cpu_id);
>
> I actually found a bug in this today. This should be sync_tsc(0), not
> sync_tsc(boot_cpu_id)
> Can you just fix it in your tree or should I submit a new patch?
>
> -Andi

Oops.  I knew I didn't have the physical versus logical cpu identifiers right
when I generated that patch.  It's not nearly as bad as I feared at the time
though.

Signed-off-by: Eric W. Biederman <[email protected]>
---

 arch/x86_64/kernel/smpboot.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

5192895f71c7eff7e1335cd9d6a775dda2bb5d52
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -334,7 +334,7 @@ static void __cpuinit tsc_sync_wait(void
 {
 	if (notscsync || !cpu_has_tsc)
 		return;
-	sync_tsc(boot_cpu_id);
+	sync_tsc(0);
 }
 
 static __init int notscsync_setup(char *s)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux