On Sunday 22 March 2009, Jeremy Fitzhardinge wrote: > Rafael J. Wysocki wrote: > > Well, why don't you implement the platform suspend operations for Xen? > > I guess you don't want ACPI _PTS to be executed during suspend as well. > > > > I don't know. What's _PTS? It's an ACPI method called to prepare the platform to enter the sleep state (the name stands for "prepare to sleep"). Executing it may affect the hardware. > I think for the most part we want Linux to do most of the acpi work of > bringing the machine into an idle state. Its just that Xen is > responsible for the very low level cpu context save/restore, because the > Linux kernel is still running on vcpus rather than the physical cpus. I think you really should not execute any global ACPI methods to suspend a guest, because that may affect the host. That's why I think it's better to regard Xen as a platform and implement a separate set of suspend operations for it. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
