[PATCH] KVM: arm64: Add endian casting to kvm_swap_s1_desc()
DORMANTno replies
From: Marc Zyngier <maz@kernel.org>
Date: 2025-11-25 19:41:53
Also in:
kvm, kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
Keep sparse quiet by explicitly casting endianness conversion when swapping S1 descriptors. Reported-by: kernel test robot <redacted> Closes: https://lore.kernel.org/oe-kbuild-all/202511260246.JQDGsQKa-lkp@intel.com/ (local) Fixes: c59ca4b5b0c3f ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW") Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/kvm/at.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kvm/at.c b/arch/arm64/kvm/at.c
index f774a02d9393b..d25fef0f66e21 100644
--- a/arch/arm64/kvm/at.c
+++ b/arch/arm64/kvm/at.c@@ -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);
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2.47.3