KVM: arm64: gic-v5: Introduce struct vgic_v5_irs and IRS base address

In order to properly emulate the operation of the IRS from KVM, we
require storage for the MMIO register state. This change introduces
struct vgic_v5_irs, and adds a pointer to it to the struct vgic_dist.

This new data structure contains the storage for IRS MMIO state that
is required for emulating the MMIO interface in KVM. This provides
persistent storage, and a way to track data across MMIO writes, e.g.,
selecting an SPI and updating the configuration of it is two MMIO
writes.

Note that only a pointer to the data structure is added to struct
vgic_dist as this new structure is very large, and hence it makes
sense to dynamically allocate it and just provide a pointer to
retrieve it in struct vgic_dist.

In addition to adding a structure to store the MMIO state for the IRS,
we add the base address in GPA space to struct vgic_v5_irs.

Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Link: https://patch.msgid.link/20260904113404.4051341-18-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions