linux-kernel - [PATCH RFC v9 23/51] KVM: SEV: Select CONFIG_KVM_PROTECTED_VM when CONFIG_KVM_AMD

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Message-ID: <20230612042559.375660-24-michael.roth@amd.com>
Date:   Sun, 11 Jun 2023 23:25:31 -0500
From:   Michael Roth <michael.roth@....com>
To:     <kvm@...r.kernel.org>
CC:     <linux-coco@...ts.linux.dev>, <linux-mm@...ck.org>,
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Subject: [PATCH RFC v9 23/51] KVM: SEV: Select CONFIG_KVM_PROTECTED_VM when CONFIG_KVM_AMD_SEV=y

AMD SEV relies on the restricted/protected memory support to run guests
in some cases (such as SEV lazy-pinning), so make sure to enable that
support with the CONFIG_KVM_PROTECTED_VM build option.

Signed-off-by: Michael Roth <michael.roth@....com>
---
 arch/x86/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 718010600956..638679a4e5dc 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -126,6 +126,7 @@ config KVM_AMD_SEV
 	bool "AMD Secure Encrypted Virtualization (SEV) support"
 	depends on KVM_AMD && X86_64
 	depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
+	select KVM_PROTECTED_VM
 	help
 	  Provides support for launching Encrypted VMs (SEV) and Encrypted VMs
 	  with Encrypted State (SEV-ES) on AMD processors.
-- 
2.25.1