Re: [PATCH 5/8] KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA

[David Woodhouse]

On Thu, 2023-09-14 at 08:49 +0000, Paul Durrant wrote:
> --- a/include/linux/kvm_types.h
> +++ b/include/linux/kvm_types.h
> @@ -64,7 +64,8 @@ struct gfn_to_hva_cache {
>  
>  struct gfn_to_pfn_cache {
>         u64 generation;
> -       gpa_t gpa;
> +       unsigned long addr;

On 32-bit hosts gpa_t is 64 bits and doesn't fit in an 'unsigned long'

> +       bool addr_is_gpa;

Don't put that there. There are already bools at the end of the struct
which wouldn't leave 63 bits of padding.

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