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[src/trunk]: src/lib/libnvmm Replace "VMM" by "emulator", clearer.
details: https://anonhg.NetBSD.org/src/rev/3a67da2fed42
branches: trunk
changeset: 451238:3a67da2fed42
user: maxv <maxv%NetBSD.org@localhost>
date: Sat May 11 07:44:00 2019 +0000
description:
Replace "VMM" by "emulator", clearer.
diffstat:
lib/libnvmm/libnvmm.3 | 39 ++++++++++++++++++++-------------------
1 files changed, 20 insertions(+), 19 deletions(-)
diffs (131 lines):
diff -r 4341ea732ac2 -r 3a67da2fed42 lib/libnvmm/libnvmm.3
--- a/lib/libnvmm/libnvmm.3 Sat May 11 07:40:38 2019 +0000
+++ b/lib/libnvmm/libnvmm.3 Sat May 11 07:44:00 2019 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: libnvmm.3,v 1.17 2019/05/11 07:40:38 maxv Exp $
+.\" $NetBSD: libnvmm.3,v 1.18 2019/05/11 07:44:00 maxv Exp $
.\"
.\" Copyright (c) 2018, 2019 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -86,13 +86,13 @@
"struct nvmm_exit *exit"
.Sh DESCRIPTION
.Nm
-provides a library for VMM software to handle hardware-accelerated virtual
+provides a library for emulator software to handle hardware-accelerated virtual
machines in
.Nx .
A virtual machine is described by an opaque structure,
.Cd nvmm_machine .
-VMM software should not attempt to modify this structure directly, and should
-use the API provided by
+Emulator software should not attempt to modify this structure directly, and
+should use the API provided by
.Nm
to manage virtual machines.
.Pp
@@ -268,8 +268,8 @@
.Ss NVMM Capability
The
.Cd nvmm_capability
-structure helps VMM software identify the capabilities offered by NVMM on the
-host:
+structure helps emulator software identify the capabilities offered by NVMM on
+the host:
.Bd -literal
struct nvmm_capability {
uint64_t version;
@@ -289,7 +289,7 @@
.Cd max_vcpus
indicates the maximum number of VCPUs supported per virtual machine.
.Ss Machine Configuration
-VMM software can configure several parameters of a virtual machine by using
+Emulator software can configure several parameters of a virtual machine by using
.Fn nvmm_machine_configure ,
which can take the following operations:
.Bd -literal
@@ -300,10 +300,10 @@
The higher fields depend on the architecture.
.Ss Guest-Host Mappings
Each virtual machine has an associated guest physical memory.
-VMM software is allowed to modify this guest physical memory by mapping
+Emulator software is allowed to modify this guest physical memory by mapping
it into some parts of its virtual address space.
.Pp
-VMM software should follow the following steps to achieve that:
+Emulator software should follow the following steps to achieve that:
.Pp
.Bl -bullet -offset indent -compact
.It
@@ -346,7 +346,7 @@
.Fa hva ,
and vice versa.
.Pp
-It is illegal for VMM software to use
+It is illegal for emulator software to use
.Fn munmap
on an area that was mapped via
.Fn nvmm_hva_map .
@@ -415,10 +415,10 @@
to retrieve certain state values.
.Pp
It is possible that a VM exit was caused by a reason internal to the host
-kernel, and that VMM software should not be concerned with.
+kernel, and that emulator software should not be concerned with.
In this case, the exit reason is set to
.Cd NVMM_EXIT_NONE .
-This gives a chance for VMM software to halt the VM in its tracks.
+This gives a chance for emulator software to halt the VM in its tracks.
.Pp
Refer to functional examples to see precisely how to handle VM exits.
.Ss Event Injection
@@ -464,7 +464,7 @@
in-NMI context.
.El
.Pp
-VMM software can manage interrupt and NMI window-exiting via the
+Emulator software can manage interrupt and NMI window-exiting via the
.Va intr
component of the VCPU state.
When such window-exiting is enabled, NVMM will cause a VM exit with reason
@@ -476,7 +476,7 @@
.Ss Assist Callbacks
In order to assist emulation of certain operations,
.Nm
-requires VMM software to register, via
+requires emulator software to register, via
.Fn nvmm_machine_configure ,
a set of callbacks described in the following structure:
.Bd -literal
@@ -493,15 +493,15 @@
or
.Fn nvmm_assist_mem
are invoked.
-VMM software that does not intend to use either of these assists can put
+Emulator software that does not intend to use either of these assists can put
.Dv NULL
in the callbacks.
.Ss I/O Assist
When a VM exit occurs with reason
.Cd NVMM_EXIT_IO ,
-it is necessary for VMM software to emulate the associated I/O operation.
+it is necessary for emulator software to emulate the associated I/O operation.
.Nm
-provides an easy way for VMM software to perform that.
+provides an easy way for emulator software to perform that.
.Pp
.Fn nvmm_assist_io
will call the registered
@@ -545,9 +545,10 @@
.Ss Mem Assist
When a VM exit occurs with reason
.Cd NVMM_EXIT_MEMORY ,
-it is necessary for VMM software to emulate the associated memory operation.
+it is necessary for emulator software to emulate the associated memory
+operation.
.Nm
-provides an easy way for VMM software to perform that, similar to the I/O
+provides an easy way for emulator software to perform that, similar to the I/O
Assist.
.Pp
.Fn nvmm_assist_mem
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