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SubjectRe: [RFC PATCH 02/33] Add sync bitops
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On Tue, 2006-07-18 at 00:00 -0700, Chris Wright wrote:
> plain text document attachment (synch-ops)
> Add "always lock'd" implementations of set_bit, clear_bit and
> change_bit and the corresponding test_and_ functions. Also add
> "always lock'd" implementation of cmpxchg. These give guaranteed
> strong synchronisation and are required for non-SMP kernels running on
> an SMP hypervisor.

Hi,

this sounds really like the wrong approach; you know you're compiling
for xen, so why not just make set_bit() and the others use the lock'd
instructions at compile time?

Greetings,
Arjan van de Ven

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