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KVM: Introduce KVM_MEMORY_ENCRYPT_OP ioctl

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If the hardware supports memory encryption then the
KVM_MEMORY_ENCRYPT_OP ioctl can be used by qemu to issue a platform
specific memory encryption commands.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Brijesh Singh
2017-12-04 10:57:26 -06:00
parent 8765d75329
commit 5acc5c0631
4 changed files with 26 additions and 0 deletions
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6
arch/x86/kvm/x86.c
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@@ -4281,6 +4281,12 @@ set_identity_unlock:
r = kvm_vm_ioctl_enable_cap(kvm, &cap);
break;
}
case KVM_MEMORY_ENCRYPT_OP: {
r = -ENOTTY;
if (kvm_x86_ops->mem_enc_op)
r = kvm_x86_ops->mem_enc_op(kvm, argp);
break;
}
default:
r = -ENOTTY;
}