> > It seems that sleep.c isn't built when on the ARM64 architecture. Using > > acpi_sleep_state_supported() directly in hv_balloon.c will be problematic > > since hv_balloon.c needs to be architecture independent when the > > Hyper-V ARM64 support is added. If that doesn't change, a per-architecture > > wrapper will be needed to give hv_balloon.c the correct information. This > > may affect whether acpi_sleep_state_supported() needs to be exported vs. > > just removing the "static". I'm not sure what the best approach is. > > > > Michael > > + some ARM experts who worked on arch/arm/kernel/hibernate.c. > > drivers/acpi/sleep.c is only built if ACPI_SYSTEM_POWER_STATES_SUPPORT > is defined, but it looks this option is not defined on ARM. > > It looks ARM does not support the ACPI S4 state, then how do we know > if an ARM host supports hibernation or not? But actually... I remember ELCE talk about hibernation or ARM32. Not sure if patches are mainline, but someone was working on that. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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