Messages in this thread | | | Subject | RE: HELP: Is writeq an atomic operation?? | Date | Fri, 2 May 2008 16:49:55 -0600 | From | "Moore, Eric" <> |
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> > > > The answer to this question this is platform dependent. > > > > On most 64-bit platforms, it is. On some 32-bit ones, it is not. > > Are there any 32-bit platforms with writeq()? A quick grep > suggests not.
I think writeq defined in include/asm-x86/io_64.h
> > Are there any 64-bit platforms where writeq() allows the MMIO to be > split into multiple cycles from the target device's view? I've been > coding assuming that at least no other MMIO writes will reach > the device > in the middle of a writeq(). >
I hope that is the case.
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