[Xen-devel] [PATCH 01/24] PVH xen: Add readme docs/misc/pvh-readme.txt

[Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>]

Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
---
 docs/misc/pvh-readme.txt |   40 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 40 insertions(+), 0 deletions(-)
 create mode 100644 docs/misc/pvh-readme.txt

diff --git a/docs/misc/pvh-readme.txt b/docs/misc/pvh-readme.txt
new file mode 100644
index 0000000..a813373
--- /dev/null
+++ b/docs/misc/pvh-readme.txt
@@ -0,0 +1,40 @@
+
+PVH : a pv guest running in an HVM container. HAP is required for PVH.
+
+See: 
http://blog.xen.org/index.php/2012/10/23/the-paravirtualization-spectrum-part-1-the-ends-of-the-spectrum/
+
+
+The initial phase targets the booting of a 64bit UP/SMP linux guest in PVH 
+mode. This is done by adding: pvh=1 in the config file. xl, and not xm, is 
+supported. Phase I patches are broken into three parts:
+   - xen changes for booting of 64bit PVH guest
+   - tools changes for creating a PVH guest
+   - boot of 64bit dom0 in PVH mode.
+
+The best way to find all the patches is to use "git log|grep -i PVH", both
+in xen and linux tree.
+
+Following fixme's exist in the code:
+  - Add support for more memory types in arch/x86/hvm/mtrr.c.
+  - arch/x86/time.c: support more tsc modes.
+  - check_guest_io_breakpoint(): check/add support for IO breakpoint.
+  - implement arch_get_info_guest() for pvh.
+  - vmxit_msr_read(): during AMD port go thru hvm_msr_read_intercept() again.
+  - verify bp matching on emulated instructions will work same as HVM for
+    PVH guest. see instruction_done() and check_guest_io_breakpoint().
+
+Following remain to be done for PVH:
+   - AMD port.
+   - 32bit PVH guest support in both linux and xen. Xen changes are tagged 
+     "32bitfixme".
+   - Add support for monitoring guest behavior. See hvm_memory_event* functions
+     in hvm.c
+   - vcpu hotplug support
+   - Live migration of PVH guests.
+   - Avail PVH dom0 of posted interrupts. (This will be a big win).
+
+
+Note, any emails to must be cc'd to Xen-devel@xxxxxxxxxxxxxxxxxxxx
+
+Mukesh Rathor
+mukesh.rathor [at] oracle [dot] com
-- 
1.7.2.3


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