[lkml]   [2006]   [Aug]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch 2/8] Implement always-locked bit ops, for memory shared with an SMP hypervisor.
On Thu, 3 Aug 2006, Andi Kleen wrote:

> > Thats a good goal but what about the rest of us who have to maintain
> > additional forms of bit operations for all architectures. How much is this
> > burden?
> I don't think it's that big an issue because most architectures either
> use always locked bitops already or don't need them because they don't do
> SMP.

Those architectures that always use locked bitops or dont need them would
not need to be modified if we put this in a special fail. I think this is
a i386 speciality here?

Those operations are only needed for special xen driver and not for
regular kernel code!

> So it will be fine with just a asm-generic header that defines them
> to the normal bitops. Not much burden.

asm-generic/xen-bitops.h asm-i386/xen-bitops.h is even less of a burden
and would only require a

#include <asm/xen-bitops.h>

for those special xen drivers.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-08-03 06:31    [W:0.115 / U:3.572 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site