[Xen-changelog] [xen master] docs: document ACPI usage in PVHv2 guests

[patchbot@xxxxxxx]

commit 6723676c2651a40855e37861315569892fa2b923
Author:     Roger Pau Monne <roger.pau@xxxxxxxxxx>
AuthorDate: Thu Nov 3 13:19:03 2016 +0100
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Thu Nov 3 12:34:03 2016 +0000

    docs: document ACPI usage in PVHv2 guests
    
    It is possible for PVHv2 guests to get the hardware description from ACPI
    tables, add this to the documentation also.
    
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 docs/misc/hvmlite.markdown | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/docs/misc/hvmlite.markdown b/docs/misc/hvmlite.markdown
index 09051ee..946908e 100644
--- a/docs/misc/hvmlite.markdown
+++ b/docs/misc/hvmlite.markdown
@@ -64,3 +64,14 @@ The following VCPU hypercalls can be used in order to bring 
up secondary vCPUs:
  * `VCPUOP_down` is used to bring down a vCPU.
 
  * `VCPUOP_is_up` is used to scan the number of available vCPUs.
+
+## Hardware description ##
+
+PVHv2 guests that have access to hardware (either emulated or real) will also
+have ACPI tables with the description of the hardware that's available to the
+guest. This applies to both privileged and unprivileged guests. A hint of
+the position of the RSDP in memory (if present) can be fetched from the start
+info structure that's passed at boot time (field rsdp_paddr).
+
+Description of paravirtualized devices will come from XenStore, just as it's
+done for HVM guests.
--
generated by git-patchbot for /home/xen/git/xen.git#master

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