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Re: [Xen-devel] Re: x86_64 SMP support (status update)




On 27 Jun 2005, at 22:55, Keir Fraser wrote:

Xen makes a shadow mapping of the per-vcpu gdt in its own address space. This, coupled with Xen reserving the last 2 pages of GDT entries for itself, requires every GDT to start on a page boundary. So, even though per-cpu gdts are not page-aligned they must be at least one page in size.

Last sentence should be "per-cpu gdts have to be page-aligned, so each one burns a page". :-)

 -- Keir


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