On 11/01/2015 11:06 PM, Timur Tabi wrote: > Fu Wei wrote: >> In virtualization system, Linux kernel with KVM support as a >> Hypervisor, and guest are using a one of SBSA watchdog. >> WS0 is handled by guest OS, and WS1 will be handled by Hypervisor. > > I don't see how that would work, because the host kernel cannot > reconfigure the behavior of WS1. > > Besides, don't KVM guests use some kind of software and/or > paravirtualized watchdog? Indeed, this is my expectation. IIRC the hardware watchdog initially defined in SBSA was intended for bare metal use to have something people could start implementing while we worked on the future (the language around register frames relates to secure/non-secure ELs in my recollection). For now, I expect an emulated watchdog for VMs, which ideally would be a software implementation of the same SBSA watchdog. Jon. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
