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Message-ID: <AANLkTikVB6Vf5W-KACdLJOz=FmtU4syQ4z1EWmjunB5o@mail.gmail.com> Date: Tue, 15 Feb 2011 14:04:08 +0000 From: Will Newton <will.newton@...il.com> To: "H. Peter Anvin" <hpa@...or.com> Cc: Matt Fleming <matt@...sole-pimps.org>, David Miller <davem@...emloft.net>, rostedt@...dmis.org, peterz@...radead.org, jbaron@...hat.com, mathieu.desnoyers@...ymtl.ca, mingo@...e.hu, tglx@...utronix.de, andi@...stfloor.org, roland@...hat.com, rth@...hat.com, masami.hiramatsu.pt@...achi.com, fweisbec@...il.com, avi@...hat.com, sam@...nborg.org, ddaney@...iumnetworks.com, michael@...erman.id.au, linux-kernel@...r.kernel.org, vapier@...too.org, cmetcalf@...era.com, dhowells@...hat.com, schwidefsky@...ibm.com, heiko.carstens@...ibm.com, benh@...nel.crashing.org Subject: Re: [PATCH 0/2] jump label: 2.6.38 updates On Tue, Feb 15, 2011 at 1:31 PM, H. Peter Anvin <hpa@...or.com> wrote: > On 02/15/2011 03:01 AM, Will Newton wrote: >> >> The CPU in question has two sets of instructions: >> >> load/store - these go via the cache (write through) >> ll/sc - these operate literally as if there is no cache (they do not >> hit on read or write) >> >> This may or may not be a sensible way to architect a CPU, but I think >> it is possible to make it work. Making it work efficiently is more of >> a challenge. >> > > a) What "CPU in question" is this? http://imgtec.com/meta/meta-technology.asp > b) Why should we let this particular insane CPU slow ALL OTHER CPUs down? I didn't propose we do that. I brought it up just to make people aware that there are these odd architectures out there, and indeed it turns out Blackfin has some superficially similar issues. -- 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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