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KVM: arm64: Add endian casting to kvm_swap_s1_desc()

PATCH Superseded Marc Zyngier 1 participant 1 message Nov 25, 2025

Subsystems (3)
KVM arm64 KVM arm64

v1 of 2 Superseded Latest is v2 →

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Marc Zyngier

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PATCH 1/1 KVM: arm64: Add endian casting to kvm_swap_s1_desc()

Keep sparse quiet by explicitly casting endianness conversion when swapping S1 descriptors.

Reported-by kernel test robot <[email protected]>
Closes https://lore.kernel.org/oe-kbuild-all/[email protected]/ open here
Fixes c59ca4b5b0c3f ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Signed-off-by Marc Zyngier <[email protected]>
---
 arch/arm64/kvm/at.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
arch/arm64/kvm/at.c +4 -4
index f774a02d9393b..d25fef0f66e21 100644
@@ -386,11 +386,11 @@ static int kvm_swap_s1_desc(struct kvm_vcpu *vcpu, u64 pa, u64 old, u64 new,
 			    struct s1_walk_info *wi)
 {
 	if (wi->be) {
-		old = cpu_to_be64(old);
-		new = cpu_to_be64(new);
+		old = (__force u64)cpu_to_be64(old);
+		new = (__force u64)cpu_to_be64(new);
 	} else {
-		old = cpu_to_le64(old);
-		new = cpu_to_le64(new);
+		old = (__force u64)cpu_to_le64(old);
+		new = (__force u64)cpu_to_le64(new);
 	}
 
 	return __kvm_at_swap_desc(vcpu->kvm, pa, old, new);
Signature · 1 line
2.47.3