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Jeremy Fitzhardinge 0e91398f2a xen: implement save/restore ... This patch implements Xen save/restore and migration. Saving is triggered via xenbus, which is polled in drivers/xen/manage.c. When a suspend request comes in, the kernel prepares itself for saving by: 1 - Freeze all processes. This is primarily to prevent any partially-completed pagetable updates from confusing the suspend process. If CONFIG_PREEMPT isn't defined, then this isn't necessary. 2 - Suspend xenbus and other devices 3 - Stop_machine, to make sure all the other vcpus are quiescent. The Xen tools require the domain to run its save off vcpu0. 4 - Within the stop_machine state, it pins any unpinned pgds (under construction or destruction), performs canonicalizes various other pieces of state (mostly converting mfns to pfns), and finally 5 - Suspend the domain Restore reverses the steps used to save the domain, ending when all the frozen processes are thawed. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		17 years ago
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xenbus	xenbus: rebind irq on restore	17 years ago
Kconfig	xen: add balloon driver	17 years ago
Makefile	xen: Move manage.c to drivers/xen for ia64/xen support	17 years ago
balloon.c	xen: drivers/xen/balloon.c: make a function static	17 years ago
events.c	xen: implement save/restore	17 years ago
features.c	xen: move features.c from arch/x86/xen/features.c to drivers/xen	17 years ago
grant-table.c	xen: implement save/restore	17 years ago
manage.c	xen: implement save/restore	17 years ago
xencomm.c	xen: import arch generic part of xencomm	17 years ago