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Date: Mon, 09 Mar 2009 18:07:47 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: Jeremy Fitzhardinge <jeremy@...p.org> CC: the arch/x86 maintainers <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Xen-devel <xen-devel@...ts.xensource.com>, Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Subject: Re: [PATCH] paravirt/xen: add pvop for page_is_ram Jeremy Fitzhardinge wrote: > From: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> > > A guest domain may have external pages mapped into its address space, > in order to share memory with other domains. These shared pages are > more akin to io mappings than real RAM, and should not pass the > page_is_ram test. Add a paravirt op for this so that a hypervisor > backend can validate whether a page should be considered ram or not. > > Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> > Why are these pages mapped as RAM in the memory map? That is the right way to handle that, not by adding yet another bloody hook... -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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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