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Date: Fri, 2 May 2008 16:49:55 -0600 From: "Moore, Eric" <Eric.Moore@....com> To: "Roland Dreier" <rdreier@...co.com>, "David Miller" <davem@...emloft.net> Cc: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: RE: HELP: Is writeq an atomic operation?? > > > > 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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