Messages in this thread |  | | | Date | Mon, 25 Apr 2005 16:17:47 -0700 | | From | Andrew Morton <> | | Subject | Re: [openib-general] Re: [PATCH][RFC][0/4] InfiniBand userspace verbsimplementation |
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Timur Tabi <timur.tabi@ammasso.com> wrote: > > Bob Woodruff wrote: > > > There definitely needs to be a mechanism to prevent people from pinning > > too much memory. > > Any limit would have to be very high - definitely more than just half. What if the > application needs to pin 2GB? The customer is not going to buy 4+ GB of RAM just because > Linux doesn't like pinning more than half. In an x86-32 system, that would required PAE > support and slow everything down. > > Off the top of my head, I'd say Linux would need to allow all but 512MB to be pinned. So > you have 3GB of RAM, Linux should allow you to pin 2.5GB. >
You can pin the whole darn lot *if you have the correct privileges*. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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