Re: [PATCH] crypto: ccp: Build the AMD secure processor driver only with AMD CPU support

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On 9/30/17 3:30 AM, Borislav Petkov wrote:
...

> From: Borislav Petkov <bp@xxxxxxx>
>
> This is AMD-specific hardware so present it in Kconfig only when AMD
> CPU support is enabled.
>
> Signed-off-by: Borislav Petkov <bp@xxxxxxx>
> Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
> Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
> Cc: Gary Hook <gary.hook@xxxxxxx>
> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: linux-crypto@xxxxxxxxxxxxxxx
> ---
>  drivers/crypto/ccp/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig
> index 627f3e61dcac..f58a6521270b 100644
> --- a/drivers/crypto/ccp/Kconfig
> +++ b/drivers/crypto/ccp/Kconfig
> @@ -1,5 +1,6 @@
>  config CRYPTO_DEV_CCP_DD
>  	tristate "Secure Processor device driver"
> +	depends on CPU_SUP_AMD

Please note that ccp.ko is built on both x86 and aarch64 (AMD Seattle)
architectures. I have not looked into details but I thought CPU_SUP_AMD
is x64 specific config. I will look into it and verify that we don't
break AMD Seattle platform builds.

>  	default m
>  	help
>  	  Provides AMD Secure Processor device driver.




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