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Diffstat (limited to 'docs/system/arm/xenpvh.rst')
| -rw-r--r-- | docs/system/arm/xenpvh.rst | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/docs/system/arm/xenpvh.rst b/docs/system/arm/xenpvh.rst index e1655c7ab8..430ac2c02e 100644 --- a/docs/system/arm/xenpvh.rst +++ b/docs/system/arm/xenpvh.rst @@ -1,34 +1,39 @@ -XENPVH (``xenpvh``) +Xen Device Emulation Backend (``xenpvh``) ========================================= -This machine creates a IOREQ server to register/connect with Xen Hypervisor. -When TPM is enabled, this machine also creates a tpm-tis-device at a user input -tpm base address, adds a TPM emulator and connects to a swtpm application -running on host machine via chardev socket. This enables xenpvh to support TPM -functionalities for a guest domain. +This machine is a little unusual compared to others as QEMU just acts +as an IOREQ server to register/connect with Xen Hypervisor. Control of +the VMs themselves is left to the Xen tooling. -More information about TPM use and installing swtpm linux application can be -found at: docs/specs/tpm.rst. +When TPM is enabled, this machine also creates a tpm-tis-device at a +user input tpm base address, adds a TPM emulator and connects to a +swtpm application running on host machine via chardev socket. This +enables xenpvh to support TPM functionalities for a guest domain. + +More information about TPM use and installing swtpm linux application +can be found in the :ref:`tpm-device` section. Example for starting swtpm on host machine: + .. code-block:: console mkdir /tmp/vtpm2 swtpm socket --tpmstate dir=/tmp/vtpm2 \ - --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock & + --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock & Sample QEMU xenpvh commands for running and connecting with Xen: + .. code-block:: console qemu-system-aarch64 -xen-domid 1 \ - -chardev socket,id=libxl-cmd,path=qmp-libxl-1,server=on,wait=off \ - -mon chardev=libxl-cmd,mode=control \ - -chardev socket,id=libxenstat-cmd,path=qmp-libxenstat-1,server=on,wait=off \ - -mon chardev=libxenstat-cmd,mode=control \ - -xen-attach -name guest0 -vnc none -display none -nographic \ - -machine xenpvh -m 1301 \ - -chardev socket,id=chrtpm,path=tmp/vtpm2/swtpm-sock \ - -tpmdev emulator,id=tpm0,chardev=chrtpm -machine tpm-base-addr=0x0C000000 + -chardev socket,id=libxl-cmd,path=qmp-libxl-1,server=on,wait=off \ + -mon chardev=libxl-cmd,mode=control \ + -chardev socket,id=libxenstat-cmd,path=qmp-libxenstat-1,server=on,wait=off \ + -mon chardev=libxenstat-cmd,mode=control \ + -xen-attach -name guest0 -vnc none -display none -nographic \ + -machine xenpvh -m 1301 \ + -chardev socket,id=chrtpm,path=tmp/vtpm2/swtpm-sock \ + -tpmdev emulator,id=tpm0,chardev=chrtpm -machine tpm-base-addr=0x0C000000 In above QEMU command, last two lines are for connecting xenpvh QEMU to swtpm via chardev socket. |