On Tue, Mar 17, 2015 at 04:14:41PM +0530, Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar <mah...@linux.vnet.ibm.com>
> 
> commit id 2ba9f0d has changed CONFIG_KVM_BOOK3S_64_HV to tristate to allow
> HV/PR bits to be built as modules. But the MCE code still depends on
> CONFIG_KVM_BOOK3S_64_HV which is wrong. When user selects
> CONFIG_KVM_BOOK3S_64_HV=m to build HV/PR bits as a separate module the
> relevant MCE code gets excluded.
> 
> This patch fixes the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER. This
> makes sure that the relevant MCE code is included when HV/PR bits
> are built as a separate modules.
> 
> Signed-off-by: Mahesh Salgaonkar <mah...@linux.vnet.ibm.com>
> ---
> Hi Michael,
>       This patch should also goto stable.
> 
>  arch/powerpc/kernel/exceptions-64s.S |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/kernel/exceptions-64s.S 
> b/arch/powerpc/kernel/exceptions-64s.S
> index c2df815..9519e6b 100644
> --- a/arch/powerpc/kernel/exceptions-64s.S
> +++ b/arch/powerpc/kernel/exceptions-64s.S
> @@ -1408,7 +1408,7 @@ machine_check_handle_early:
>       bne     9f                      /* continue in V mode if we are. */
>  
>  5:
> -#ifdef CONFIG_KVM_BOOK3S_64_HV
> +#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
>       /*
>        * We are coming from kernel context. Check if we are coming from
>        * guest. if yes, then we can continue. We will fall through

Acked-by: Paul Mackerras <pau...@samba.org>
Cc: sta...@vger.kernel.org  # v3.14+
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