summaryrefslogtreecommitdiffstats
path: root/Documentation/virtual
diff options
context:
space:
mode:
authorBrijesh Singh <brijesh.singh@amd.com>2017-12-04 10:57:26 -0600
committerBrijesh Singh <brijesh.singh@amd.com>2017-12-04 10:57:26 -0600
commit5acc5c063196b4a531a761a954023c1848ec832b (patch)
treef0aeadedafe44f1d651fc6811826d62b89ddb8e8 /Documentation/virtual
parent8765d75329a386dd7742f94a1ea5fdcdea8d93d0 (diff)
downloadop-kernel-dev-5acc5c063196b4a531a761a954023c1848ec832b.zip
op-kernel-dev-5acc5c063196b4a531a761a954023c1848ec832b.tar.gz
KVM: Introduce KVM_MEMORY_ENCRYPT_OP ioctl
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>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt16
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index f670e4b..c8755be 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -3394,6 +3394,22 @@ invalid, if invalid pages are written to (e.g. after the end of memory)
or if no page table is present for the addresses (e.g. when using
hugepages).
+4.109 KVM_MEMORY_ENCRYPT_OP
+
+Capability: basic
+Architectures: x86
+Type: system
+Parameters: an opaque platform specific structure (in/out)
+Returns: 0 on success; -1 on error
+
+If the platform supports creating encrypted VMs then this ioctl can be used
+for issuing platform-specific memory encryption commands to manage those
+encrypted VMs.
+
+Currently, this ioctl is used for issuing Secure Encrypted Virtualization
+(SEV) commands on AMD Processors. The SEV commands are defined in
+Documentation/virtual/kvm/amd-memory-encryption.txt.
+
5. The kvm_run structure
------------------------
OpenPOWER on IntegriCloud