Commit b7bce570 authored by Benjamin Gray's avatar Benjamin Gray Committed by Michael Ellerman
Browse files

powerpc/kvm: Force cast endianness of KVM shared regs 



Sparse reports endianness mismatches in the KVM shared regs getter and
setter helpers.

This code has dynamic endianness behind a safe interface, so a force is
warranted here to tell sparse this is OK.

Signed-off-by: default avatarBenjamin Gray <bgray@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>

Link: https://msgid.link/20231011053711.93427-8-bgray@linux.ibm.com
parent 47665229

arch/powerpc/include/asm/kvm_ppc.h

+4 −4
Original line number Diff line number Diff line
@@ -981,18 +981,18 @@ static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 
	if (iden)							\

		WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0);	\

	if (kvmppc_shared_big_endian(vcpu))				\

	       return be##size##_to_cpu(vcpu->arch.shared->reg);	\

		return be##size##_to_cpu((__be##size __force)vcpu->arch.shared->reg);	\

	else								\

	       return le##size##_to_cpu(vcpu->arch.shared->reg);	\

		return le##size##_to_cpu((__le##size __force)vcpu->arch.shared->reg);	\

}									\



#define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden)		\

static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val)	\

{									\

	if (kvmppc_shared_big_endian(vcpu))				\

	       vcpu->arch.shared->reg = cpu_to_be##size(val);		\

		vcpu->arch.shared->reg = (u##size __force)cpu_to_be##size(val);	\

	else								\

	       vcpu->arch.shared->reg = cpu_to_le##size(val);		\

		vcpu->arch.shared->reg = (u##size __force)cpu_to_le##size(val);	\

									\

	if (iden)							\

		kvmhv_nestedv2_mark_dirty(vcpu, iden);			\