Messages in this thread | | | Date | Wed, 10 May 2006 08:47:02 -0700 | From | Richard Henderson <> | Subject | Re: [RFC/PATCH] Make powerpc64 use __thread for per-cpu variables |
| |
On Wed, May 10, 2006 at 02:03:59PM +1000, Paul Mackerras wrote: > With this patch, 64-bit powerpc uses __thread for per-cpu variables.
How do you plan to address the compiler optimizing
__thread int foo; { use(foo); schedule(); use(foo); }
into
{ int *tmp = &foo; // tls arithmetic here use(*tmp); schedule(); use(*tmp); }
Across the schedule, we may have changed cpus, making the cached address invalid.
r~ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |