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Date: Sun, 21 Jun 2009 00:40:35 -0700 From: "H. Peter Anvin" <hpa@...ux.intel.com> To: Pavel Machek <pavel@....cz> CC: Yinghai Lu <yhlu.kernel@...il.com>, Matthew Wilcox <matthew@....cx>, Jesse Barnes <jbarnes@...tuousgeek.org>, Martin Mares <mj@....cz>, LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org, the arch/x86 maintainers <x86@...nel.org>, David Woodhouse <dwmw2@...radead.org>, linux-arch@...r.kernel.org Subject: Re: RFC: x86: cap iomem_resource to addressable physical memory Pavel Machek wrote: > On Thu 2009-06-11 13:46:52, H. Peter Anvin wrote: >> Yinghai Lu wrote: >>> do we need do that on every cpu? >>> >>> looks like we could do that in identify_boot_cpu. >>> >> What if the CPUs are heterogenous? It's obviously a suboptimal >> situation, but it doesn't seem like something we can rely on. > > Is it ok if that changes during runtime? What if someone hotplugs > heterogenous cpu? I'd say basing it on boot cpu seems simplest. > Pavel > If someone hotplugs heterogenous CPUs it should do the right thing if the right thing is possible to do. If you already have resource assignments that are unfulfillable you're screwed anyway. -hpa -- 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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