[PATCH 1/4] x86/hyperv: Add missing ARCH_HAS_CC_PLATFORM dependency

[Kirill A. Shutemov]

On x86, cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT) supposes to return
true for HyperV if isolation is supported. But it only does it if the
kernel is compiled with AMD_MEM_ENCRYPT enabled.

It happens due to missed ARCH_HAS_CC_PLATFORM dependency. Without
ARCH_HAS_CC_PLATFORM enabled, cc_platform_has() always returns false.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu@xxxxxxxxxx>
Cc: Dexuan Cui <decui@xxxxxxxxxxxxx>
Cc: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>
---
 drivers/hv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 0747a8f1fcee..424d3f0751dc 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -8,6 +8,7 @@ config HYPERV
 		|| (ARM64 && !CPU_BIG_ENDIAN))
 	select PARAVIRT
 	select X86_HV_CALLBACK_VECTOR if X86
+	select ARCH_HAS_CC_PLATFORM if x86
 	select VMAP_PFN
 	help
 	  Select this option to run Linux as a Hyper-V client operating
-- 
2.34.1