• Marc Zyngier's avatar
    arm/arm64: KVM: vgic: handle out-of-range MMIO accesses · c3c91836
    Marc Zyngier authored
    Now that we can (almost) dynamically size the number of interrupts,
    we're facing an interesting issue:
    
    We have to evaluate at runtime whether or not an access hits a valid
    register, based on the sizing of this particular instance of the
    distributor. Furthermore, the GIC spec says that accessing a reserved
    register is RAZ/WI.
    
    For this, add a new field to our range structure, indicating the number
    of bits a single interrupts uses. That allows us to find out whether or
    not the access is in range.
    Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
    Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    c3c91836
arm_vgic.h 9.12 KB