Nicholas Piggin <npig...@gmail.com> writes:

> Add a separate hcall entry point. This can be used to deal with the
> different calling convention.
>
> Signed-off-by: Nicholas Piggin <npig...@gmail.com>

Reviewed-by: Fabiano Rosas <faro...@linux.ibm.com>

> ---
>  arch/powerpc/kernel/exceptions-64s.S | 4 ++--
>  arch/powerpc/kvm/book3s_64_entry.S   | 4 ++++
>  2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/kernel/exceptions-64s.S 
> b/arch/powerpc/kernel/exceptions-64s.S
> index e6f7fc7c61a1..c25395b5921a 100644
> --- a/arch/powerpc/kernel/exceptions-64s.S
> +++ b/arch/powerpc/kernel/exceptions-64s.S
> @@ -2028,13 +2028,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
>        * Requires __LOAD_FAR_HANDLER beause kvmppc_interrupt lives
>        * outside the head section.
>        */
> -     __LOAD_FAR_HANDLER(r10, kvmppc_interrupt)
> +     __LOAD_FAR_HANDLER(r10, kvmppc_hcall)
>       mtctr   r10
>       ld      r10,PACA_EXGEN+EX_R10(r13)
>       bctr
>  #else
>       ld      r10,PACA_EXGEN+EX_R10(r13)
> -     b       kvmppc_interrupt
> +     b       kvmppc_hcall
>  #endif
>  #endif
>
> diff --git a/arch/powerpc/kvm/book3s_64_entry.S 
> b/arch/powerpc/kvm/book3s_64_entry.S
> index 8e7216f3c3ee..3b894b90862f 100644
> --- a/arch/powerpc/kvm/book3s_64_entry.S
> +++ b/arch/powerpc/kvm/book3s_64_entry.S
> @@ -9,6 +9,10 @@
>  /*
>   * We come here from the first-level interrupt handlers.
>   */
> +.global      kvmppc_hcall
> +.balign IFETCH_ALIGN_BYTES
> +kvmppc_hcall:
> +
>  .global      kvmppc_interrupt
>  .balign IFETCH_ALIGN_BYTES
>  kvmppc_interrupt:

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