PERFORCE change 75366 for review
John Baldwin
jhb at FreeBSD.org
Tue Apr 26 04:45:18 PDT 2005
On Apr 17, 2005, at 6:42 AM, David Xu wrote:
> http://perforce.freebsd.org/chv.cgi?CH=75366
>
> Change 75366 by davidxu at davidxu_alona on 2005/04/17 10:42:05
>
> Implement cpu_set_user_tls for sparc64.
>
> Affected files ...
>
> ..
> //depot/projects/davidxu_thread/src/sys/sparc64/sparc64/vm_machdep.c#6
> edit
>
> Differences ...
>
> ====
> //depot/projects/davidxu_thread/src/sys/sparc64/sparc64/vm_machdep.c#6
> (text+ko) ====
>
> @@ -194,6 +194,15 @@
> td->td_retval[1] = tf->tf_out[1];
> }
>
> +void
> +cpu_set_user_tls(struct thread *td, void *tls_base, size_t tls_size,
> + int tls_seg __unused)
> +{
> + if (td == curthread)
> + flushw();
> + td->td_frame->tf_global[7] = tls_base;
> +}
> +
I think for at least this one and Alpha you might want a critical
section in the curthread case like you do on i386 and amd64 since
calling the Alpha PAL and setting tls_base + flushw() are more than one
instruction long.
--
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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