diff mbox series

[v1,10/10] docs/system/i386: xenpvh: Add a basic description

Message ID 20240812130606.90410-11-edgar.iglesias@gmail.com (mailing list archive)
State New, archived
Headers show
Series xen: pvh: Partial QOM:fication with new x86 PVH machine | expand

Commit Message

Edgar E. Iglesias Aug. 12, 2024, 1:06 p.m. UTC 
From: "Edgar E. Iglesias" <edgar.iglesias@amd.com>

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
---
 MAINTAINERS                 |  1 +
 docs/system/i386/xenpvh.rst | 49 +++++++++++++++++++++++++++++++++++++
 docs/system/target-i386.rst |  1 +
 3 files changed, 51 insertions(+)
 create mode 100644 docs/system/i386/xenpvh.rst

Comments

Stefano Stabellini Aug. 13, 2024, 1:49 a.m. UTC | #1 
On Mon, 12 Aug 2024, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias@amd.com>
> 
> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>


Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>


> ---
>  MAINTAINERS                 |  1 +
>  docs/system/i386/xenpvh.rst | 49 +++++++++++++++++++++++++++++++++++++
>  docs/system/target-i386.rst |  1 +
>  3 files changed, 51 insertions(+)
>  create mode 100644 docs/system/i386/xenpvh.rst
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a24c2e14d9..da4c9d4d46 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -560,6 +560,7 @@ F: include/sysemu/xen.h
>  F: include/sysemu/xen-mapcache.h
>  F: stubs/xen-hw-stub.c
>  F: docs/system/arm/xenpvh.rst
> +F: docs/system/i386/xenpvh.rst
>  
>  Guest CPU Cores (NVMM)
>  ----------------------
> diff --git a/docs/system/i386/xenpvh.rst b/docs/system/i386/xenpvh.rst
> new file mode 100644
> index 0000000000..354250f073
> --- /dev/null
> +++ b/docs/system/i386/xenpvh.rst
> @@ -0,0 +1,49 @@
> +Xen PVH machine (``xenpvh``)
> +=========================================
> +
> +Xen supports a spectrum of types of guests that vary in how they depend
> +on HW virtualization features, emulation models and paravirtualization.
> +PVH is a mode that uses HW virtualization features (like HVM) but tries
> +to avoid emulation models and instead use passthrough or
> +paravirtualized devices.
> +
> +QEMU can be used to provide PV virtio devices on an emulated PCIe controller.
> +That is the purpose of this minimal machine.
> +
> +Supported devices
> +-----------------
> +
> +The x86 Xen PVH QEMU machine provide the following devices:
> +
> +- RAM
> +- GPEX host bridge
> +- virtio-pci devices
> +
> +The idea is to only connect virtio-pci devices but in theory any compatible
> +PCI device model will work depending on Xen and guest support.
> +
> +Running
> +-------
> +
> +The Xen tools will typically construct a command-line and launch QEMU
> +for you when needed. But here's an example of what it can look like in
> +case you need to construct one manually:
> +
> +.. code-block:: console
> +
> +    qemu-system-i386 -xen-domid 3 -no-shutdown        \
> +      -chardev socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-3,server=on,wait=off \
> +      -mon chardev=libxl-cmd,mode=control             \
> +      -chardev socket,id=libxenstat-cmd,path=/var/run/xen/qmp-libxenstat-3,server=on,wait=off \
> +      -mon chardev=libxenstat-cmd,mode=control        \
> +      -nodefaults                                     \
> +      -no-user-config                                 \
> +      -xen-attach -name g0                            \
> +      -vnc none                                       \
> +      -display none                                   \
> +      -device virtio-net-pci,id=nic0,netdev=net0,mac=00:16:3e:5c:81:78 \
> +      -netdev type=tap,id=net0,ifname=vif3.0-emu,br=xenbr0,script=no,downscript=no \
> +      -smp 4,maxcpus=4                                \
> +      -nographic                                      \
> +      -machine xenpvh,ram-low-base=0,ram-low-size=2147483648,ram-high-base=4294967296,ram-high-size=2147483648,pci-ecam-base=824633720832,pci-ecam-size=268435456,pci-mmio-base=4026531840,pci-mmio-size=33554432,pci-mmio-high-base=824902156288,pci-mmio-high-size=68719476736 \
> +      -m 4096
> diff --git a/docs/system/target-i386.rst b/docs/system/target-i386.rst
> index 1b8a1f248a..23e84e3ba7 100644
> --- a/docs/system/target-i386.rst
> +++ b/docs/system/target-i386.rst
> @@ -26,6 +26,7 @@ Architectural features
>     i386/cpu
>     i386/hyperv
>     i386/xen
> +   i386/xenpvh
>     i386/kvm-pv
>     i386/sgx
>     i386/amd-memory-encryption
> -- 
> 2.43.0
>
diff mbox series

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index a24c2e14d9..da4c9d4d46 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -560,6 +560,7 @@  F: include/sysemu/xen.h
 F: include/sysemu/xen-mapcache.h
 F: stubs/xen-hw-stub.c
 F: docs/system/arm/xenpvh.rst
+F: docs/system/i386/xenpvh.rst
 
 Guest CPU Cores (NVMM)
 ----------------------
diff --git a/docs/system/i386/xenpvh.rst b/docs/system/i386/xenpvh.rst
new file mode 100644
index 0000000000..354250f073
--- /dev/null
+++ b/docs/system/i386/xenpvh.rst
@@ -0,0 +1,49 @@ 
+Xen PVH machine (``xenpvh``)
+=========================================
+
+Xen supports a spectrum of types of guests that vary in how they depend
+on HW virtualization features, emulation models and paravirtualization.
+PVH is a mode that uses HW virtualization features (like HVM) but tries
+to avoid emulation models and instead use passthrough or
+paravirtualized devices.
+
+QEMU can be used to provide PV virtio devices on an emulated PCIe controller.
+That is the purpose of this minimal machine.
+
+Supported devices
+-----------------
+
+The x86 Xen PVH QEMU machine provide the following devices:
+
+- RAM
+- GPEX host bridge
+- virtio-pci devices
+
+The idea is to only connect virtio-pci devices but in theory any compatible
+PCI device model will work depending on Xen and guest support.
+
+Running
+-------
+
+The Xen tools will typically construct a command-line and launch QEMU
+for you when needed. But here's an example of what it can look like in
+case you need to construct one manually:
+
+.. code-block:: console
+
+    qemu-system-i386 -xen-domid 3 -no-shutdown        \
+      -chardev socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-3,server=on,wait=off \
+      -mon chardev=libxl-cmd,mode=control             \
+      -chardev socket,id=libxenstat-cmd,path=/var/run/xen/qmp-libxenstat-3,server=on,wait=off \
+      -mon chardev=libxenstat-cmd,mode=control        \
+      -nodefaults                                     \
+      -no-user-config                                 \
+      -xen-attach -name g0                            \
+      -vnc none                                       \
+      -display none                                   \
+      -device virtio-net-pci,id=nic0,netdev=net0,mac=00:16:3e:5c:81:78 \
+      -netdev type=tap,id=net0,ifname=vif3.0-emu,br=xenbr0,script=no,downscript=no \
+      -smp 4,maxcpus=4                                \
+      -nographic                                      \
+      -machine xenpvh,ram-low-base=0,ram-low-size=2147483648,ram-high-base=4294967296,ram-high-size=2147483648,pci-ecam-base=824633720832,pci-ecam-size=268435456,pci-mmio-base=4026531840,pci-mmio-size=33554432,pci-mmio-high-base=824902156288,pci-mmio-high-size=68719476736 \
+      -m 4096
diff --git a/docs/system/target-i386.rst b/docs/system/target-i386.rst
index 1b8a1f248a..23e84e3ba7 100644
--- a/docs/system/target-i386.rst
+++ b/docs/system/target-i386.rst
@@ -26,6 +26,7 @@  Architectural features
    i386/cpu
    i386/hyperv
    i386/xen
+   i386/xenpvh
    i386/kvm-pv
    i386/sgx
    i386/amd-memory-encryption