Commit 8296b16c authored by Sean Christopherson's avatar Sean Christopherson
Browse files

KVM: selftests: Add a stage-2 MMU instance to kvm_vm 



Add a stage-2 MMU instance so that architectures that support nested
virtualization (more specifically, nested stage-2 page tables) can create
and track stage-2 page tables for running L2 guests.  Plumb the structure
into common code to avoid cyclical dependencies, and to provide some line
of sight to having common APIs for creating stage-2 mappings.

As a bonus, putting the member in common code justifies using stage2_mmu
instead of tdp_mmu for x86.

Reviewed-by: default avatarYosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-13-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent e40e72fe

tools/testing/selftests/kvm/include/kvm_util.h

+5 −0
Original line number Diff line number Diff line
@@ -116,7 +116,12 @@ struct kvm_vm { 
	uint32_t dirty_ring_size;

	uint64_t gpa_tag_mask;



	/*

	 * "mmu" is the guest's stage-1, with a short name because the vast

	 * majority of tests only care about the stage-1 MMU.

	 */

	struct kvm_mmu mmu;

	struct kvm_mmu stage2_mmu;



	struct kvm_vm_arch arch;