Re: [Linux PPC] 7.0-rc1: e500_mmu.c:923:26: error: assignment to 'struct tlbe_priv *' from incompatible pointer type 'struct tlbe_ref *'

Christophe Leroy (CS GROUP)
2026-02-23T19:38:39Z

Le 23/02/2026 à 19:07, Christophe Leroy (CS GROUP) a écrit :
> +Kees
>
> Hello,
>
> Le 23/02/2026 à 17:48, Christian Zigotzky a écrit :
>> Hello,
>>
>> Compiling issue for e5500 machines for the RC1 of kernel 7.0:
>>
>> arch/powerpc/kvm/e500_mmu.c: In function 'kvmppc_e500_tlb_init':
>> arch/powerpc/kvm/e500_mmu.c:923:26: error: assignment to 'struct
>> tlbe_priv *' from incompatible pointer type 'struct tlbe_ref *' [-
>> Werror=incompatible-pointer-types]
>>    923 |  vcpu_e500->gtlb_priv[0] = kzalloc_objs(struct tlbe_ref,
>>        |                          ^
>> arch/powerpc/kvm/e500_mmu.c:928:26: error: assignment to 'struct
>> tlbe_priv *' from incompatible pointer type 'struct tlbe_ref *' [-
>> Werror=incompatible-pointer-types]
>>    928 |  vcpu_e500->gtlb_priv[1] = kzalloc_objs(struct tlbe_ref,
>>
>> Temporary solution: # CONFIG_VIRTUALIZATION is not set
>>
>> Please solve this issue.
>>
>
> Must be one of:
>
> 189f164e573e Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
> bf4afc53b77a Convert 'alloc_obj' family to use the new default
> GFP_KERNEL argument
> 69050f8d6d07 treewide: Replace kmalloc with kmalloc_obj for non-scalar
> types
>

Can you try following change:

diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c
index 48580c85f23b..75ed1496ead5 100644
--- a/arch/powerpc/kvm/e500_mmu.c
+++ b/arch/powerpc/kvm/e500_mmu.c
@@ -920,12 +920,12 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500
*vcpu_e500)
vcpu_e500->gtlb_offset[0] = 0;
vcpu_e500->gtlb_offset[1] = KVM_E500_TLB0_SIZE;

- vcpu_e500->gtlb_priv[0] = kzalloc_objs(struct tlbe_ref,
+ vcpu_e500->gtlb_priv[0] = kzalloc_objs(struct tlbe_priv,
vcpu_e500->gtlb_params[0].entries);
if (!vcpu_e500->gtlb_priv[0])
goto free_vcpu;

- vcpu_e500->gtlb_priv[1] = kzalloc_objs(struct tlbe_ref,
+ vcpu_e500->gtlb_priv[1] = kzalloc_objs(struct tlbe_priv,
vcpu_e500->gtlb_params[1].entries);
if (!vcpu_e500->gtlb_priv[1])
goto free_vcpu;

---
Christophe