Messages in this thread | | | Date | Thu, 8 Nov 2007 15:59:12 +1100 | From | Paul Mackerras <> | Subject | Re: compat_sys_times() bogus until jiffies >= 0. |
| |
Andrew Morton writes:
> "the latter" is what my protopatch does isn't it? It wraps at 0x7fffffff. > It appears that glibc treats all of 0x80000000-0xffffffff as an error.
Not on powerpc. On powerpc the error indication is carried separately in a condition register bit. So a force_successful_syscall_return() call will make glibc automatically do the right thing without any glibc changes on powerpc.
Wrapping at 0x7fffffff will cause programs to see large negative deltas between successive calls when the wrap occurs. I can see that giving userspace fits. :)
Paul.
- 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/
| |