linux-kernel - [PATCH v4 08/21] KVM: selftests: Add a "struct kvm_mmu_arch arch" member to kvm

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Message-ID: <20251230230150.4150236-9-seanjc@google.com>
Date: Tue, 30 Dec 2025 15:01:37 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>, 
	Oliver Upton <oupton@...nel.org>, Tianrui Zhao <zhaotianrui@...ngson.cn>, 
	Bibo Mao <maobibo@...ngson.cn>, Huacai Chen <chenhuacai@...nel.org>, 
	Anup Patel <anup@...infault.org>, Paul Walmsley <pjw@...nel.org>, 
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
	Christian Borntraeger <borntraeger@...ux.ibm.com>, Janosch Frank <frankja@...ux.ibm.com>, 
	Claudio Imbrenda <imbrenda@...ux.ibm.com>, Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	kvmarm@...ts.linux.dev, loongarch@...ts.linux.dev, 
	kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, Yosry Ahmed <yosry.ahmed@...ux.dev>
Subject: [PATCH v4 08/21] KVM: selftests: Add a "struct kvm_mmu_arch arch"
 member to kvm_mmu

Add an arch structure+field in "struct kvm_mmu" so that architectures can
track arch-specific information for a given MMU.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 tools/testing/selftests/kvm/include/arm64/kvm_util_arch.h     | 2 ++
 tools/testing/selftests/kvm/include/kvm_util.h                | 2 ++
 tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h | 1 +
 tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h     | 1 +
 tools/testing/selftests/kvm/include/s390/kvm_util_arch.h      | 1 +
 tools/testing/selftests/kvm/include/x86/kvm_util_arch.h       | 2 ++
 6 files changed, 9 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/arm64/kvm_util_arch.h b/tools/testing/selftests/kvm/include/arm64/kvm_util_arch.h
index b973bb2c64a6..4a2033708227 100644
--- a/tools/testing/selftests/kvm/include/arm64/kvm_util_arch.h
+++ b/tools/testing/selftests/kvm/include/arm64/kvm_util_arch.h
@@ -2,6 +2,8 @@
 #ifndef SELFTEST_KVM_UTIL_ARCH_H
 #define SELFTEST_KVM_UTIL_ARCH_H
 
+struct kvm_mmu_arch {};
+
 struct kvm_vm_arch {
 	bool	has_gic;
 	int	gic_fd;
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 39558c05c0bf..c1497515fa6a 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -92,6 +92,8 @@ struct kvm_mmu {
 	bool pgd_created;
 	uint64_t pgd;
 	int pgtable_levels;
+
+	struct kvm_mmu_arch arch;
 };
 
 struct kvm_vm {
diff --git a/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h b/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h
index e43a57d99b56..d5095900e442 100644
--- a/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h
+++ b/tools/testing/selftests/kvm/include/loongarch/kvm_util_arch.h
@@ -2,6 +2,7 @@
 #ifndef SELFTEST_KVM_UTIL_ARCH_H
 #define SELFTEST_KVM_UTIL_ARCH_H
 
+struct kvm_mmu_arch {};
 struct kvm_vm_arch {};
 
 #endif  // SELFTEST_KVM_UTIL_ARCH_H
diff --git a/tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h b/tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h
index e43a57d99b56..d5095900e442 100644
--- a/tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h
+++ b/tools/testing/selftests/kvm/include/riscv/kvm_util_arch.h
@@ -2,6 +2,7 @@
 #ifndef SELFTEST_KVM_UTIL_ARCH_H
 #define SELFTEST_KVM_UTIL_ARCH_H
 
+struct kvm_mmu_arch {};
 struct kvm_vm_arch {};
 
 #endif  // SELFTEST_KVM_UTIL_ARCH_H
diff --git a/tools/testing/selftests/kvm/include/s390/kvm_util_arch.h b/tools/testing/selftests/kvm/include/s390/kvm_util_arch.h
index e43a57d99b56..d5095900e442 100644
--- a/tools/testing/selftests/kvm/include/s390/kvm_util_arch.h
+++ b/tools/testing/selftests/kvm/include/s390/kvm_util_arch.h
@@ -2,6 +2,7 @@
 #ifndef SELFTEST_KVM_UTIL_ARCH_H
 #define SELFTEST_KVM_UTIL_ARCH_H
 
+struct kvm_mmu_arch {};
 struct kvm_vm_arch {};
 
 #endif  // SELFTEST_KVM_UTIL_ARCH_H
diff --git a/tools/testing/selftests/kvm/include/x86/kvm_util_arch.h b/tools/testing/selftests/kvm/include/x86/kvm_util_arch.h
index 972bb1c4ab4c..456e5ca170df 100644
--- a/tools/testing/selftests/kvm/include/x86/kvm_util_arch.h
+++ b/tools/testing/selftests/kvm/include/x86/kvm_util_arch.h
@@ -10,6 +10,8 @@
 
 extern bool is_forced_emulation_enabled;
 
+struct kvm_mmu_arch {};
+
 struct kvm_vm_arch {
 	vm_vaddr_t gdt;
 	vm_vaddr_t tss;
-- 
2.52.0.351.gbe84eed79e-goog