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docs: kvm: fix referenced ioctl symbol

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The actual symbol that is exported and usable is
'KVM_MEMORY_ENCRYPT_OP', not 'KVM_MEM_ENCRYPT_OP'

$ git grep -l KVM_MEM_ENCRYPT_OP
Documentation/virt/kvm/amd-memory-encryption.rst

$ git grep -l KVM_MEMORY_ENCRYPT_OP
Documentation/virt/kvm/api.rst
arch/x86/kvm/x86.c
include/uapi/linux/kvm.h
tools/include/uapi/linux/kvm.h

While we're in there, update the KVM API category for
KVM_MEMORY_ENCRYPT_OP. It is called on a VM file descriptor.

Signed-off-by: Connor Kuehl <ckuehl@redhat.com>
Link: https://lore.kernel.org/r/20200819211952.251984-1-ckuehl@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Connor Kuehl 2020-08-19 16:19:52 -05:00 committed by Jonathan Corbet
parent afde706afd
commit 46ca9ee5b8
2 changed files with 4 additions and 4 deletions
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6
Documentation/virt/kvm/amd-memory-encryption.rst
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@ -53,11 +53,11 @@ key management interface to perform common hypervisor activities such as
encrypting bootstrap code, snapshot, migrating and debugging the guest. For more
information, see the SEV Key Management spec [api-spec]_
The main ioctl to access SEV is KVM_MEM_ENCRYPT_OP. If the argument
to KVM_MEM_ENCRYPT_OP is NULL, the ioctl returns 0 if SEV is enabled
The main ioctl to access SEV is KVM_MEMORY_ENCRYPT_OP. If the argument
to KVM_MEMORY_ENCRYPT_OP is NULL, the ioctl returns 0 if SEV is enabled
and ``ENOTTY` if it is disabled (on some older versions of Linux,
the ioctl runs normally even with a NULL argument, and therefore will
likely return ``EFAULT``). If non-NULL, the argument to KVM_MEM_ENCRYPT_OP
likely return ``EFAULT``). If non-NULL, the argument to KVM_MEMORY_ENCRYPT_OP
must be a struct kvm_sev_cmd::
struct kvm_sev_cmd {

2
Documentation/virt/kvm/api.rst
View File

@ -4211,7 +4211,7 @@ H_GET_CPU_CHARACTERISTICS hypercall.
:Capability: basic
:Architectures: x86
:Type: system
:Type: vm
:Parameters: an opaque platform specific structure (in/out)
:Returns: 0 on success; -1 on error