• Christoffer Dall's avatar
    arm/arm64: KVM: Clarify KVM_ARM_VCPU_INIT ABI · f7fa034d
    Christoffer Dall authored
    It is not clear that this ioctl can be called multiple times for a given
    vcpu.  Userspace already does this, so clarify the ABI.
    
    Also specify that userspace is expected to always make secondary and
    subsequent calls to the ioctl with the same parameters for the VCPU as
    the initial call (which userspace also already does).
    
    Add code to check that userspace doesn't violate that ABI in the future,
    and move the kvm_vcpu_set_target() function which is currently
    duplicated between the 32-bit and 64-bit versions in guest.c to a common
    static function in arm.c, shared between both architectures.
    Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
    f7fa034d
guest.c 7.1 KB