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Xen again: which ABIXen again: which ABIPosted Jun 3, 2009 16:40 UTC (Wed) by arjan (subscriber, #36785)Parent article: Xen again
The most concern is the hypervisor <-> Kernel ABI, not a Kernel <-> Userspace ABI. The hypervisor isn't a userspace component; it's more the other way around: The Linux kernel is the "userspace" of Xen.
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Xen again: which ABI Posted Jun 3, 2009 17:56 UTC (Wed) by aigarius (subscriber, #7329) [Link]
Yes, but for a kernel developer anything out of Linux (whether higher in the food chain or lower) is 'userspace'. Even BIOS. Whne people say that Kernel<->Userspace interface is set in stone, they really mean Kernel<->Anything-that-is-not-the-kernel.
Xen again: which ABI Posted Jun 3, 2009 23:39 UTC (Wed) by mjg59 (subscriber, #23239) [Link]
That's not the case. We've broken the Linux <-> BIOS interface several times in ACPI, though admittedly every time it's been to make ourselves look more like Windows.
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