• Steven Price's avatar
    KVM: arm64: Document PV-time interface · 6a745848
    Steven Price authored
    Introduce a paravirtualization interface for KVM/arm64 based on the
    "Arm Paravirtualized Time for Arm-Base Systems" specification DEN 0057A.
    
    This only adds the details about "Stolen Time" as the details of "Live
    Physical Time" have not been fully agreed.
    
    User space can specify a reserved area of memory for the guest and
    inform KVM to populate the memory with information on time that the host
    kernel has stolen from the guest.
    
    A hypercall interface is provided for the guest to interrogate the
    hypervisor's support for this interface and the location of the shared
    memory structures.
    Signed-off-by: default avatarSteven Price <steven.price@arm.com>
    Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
    6a745848
pvtime.rst 3.55 KB