Some more bits from IRC and elsewhere.

1 files changed, 19 insertions, 5 deletions

diff --git a/microkernel/mach/gnumach/ports/xen.mdwn b/microkernel/mach/gnumach/ports/xen.mdwn
index bf26410a..af431c92 100644
--- a/microkernel/mach/gnumach/ports/xen.mdwn
+++ b/microkernel/mach/gnumach/ports/xen.mdwn
@@ -1,4 +1,4 @@
-[[!meta copyright="Copyright © 2007, 2008, 2009 Free Software Foundation,
+[[!meta copyright="Copyright © 2007, 2008, 2009, 2011 Free Software Foundation,
 Inc."]]
 
 [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
@@ -6,11 +6,12 @@ id="license" text="Permission is granted to copy, distribute and/or modify this
 document under the terms of the GNU Free Documentation License, Version 1.2 or
 any later version published by the Free Software Foundation; with no Invariant
 Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
-is included in the section entitled
-[[GNU Free Documentation License|/fdl]]."]]"""]]
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
 
 [[!toc]]
 
+
 # Xen dom0, hypervisor
 
 /!\ Now that GNU Mach handles PAE you can use a PAE-enabled hypervisor.
@@ -30,6 +31,7 @@ If you have a free partition, you can fdisk to type 0x83, create a filesystem us
 
 Replace /dev/sda4 with your partition. Install and use crosshurd to setup a GNU/Hurd system on this partition.
 
+
 # /etc/xen/hurd configuration
 
 Here is a sample /etc/xen/hurd configuration
@@ -49,6 +51,7 @@ Suggestions about [[networking_configuration]] are available.
 If you need stable MAC addresses, use a syntax like `vif = [
 'mac=00:16:3e:XX:XX:XX, bridge=br0' ]`.
 
+
 # Running Hurd with Xen
 
 To run Hurd with Xen, use:
@@ -63,6 +66,7 @@ and gnumach should get started. Proceed with native-install.
 - If `xm` complains about networking (`vif could not be connected`), it's Xen scripts' fault, see Xen documentation for how to configure the network.  The simplest way is network-bridge with fixed IPs (note that you need the bridge-utils package for this).  You can also just disable networking by commenting the vif line in the config.
 - If `xm` complains `Error: (2, 'Invalid kernel', 'xc_dom_compat_check: guest type xen-3.0-x86_32 not supported by xen kernel, sorry\n')`, you most probably have a PAE-enabled hypervisor and a non-PAE gnumach. Either install and boot non-PAE hypervisor and kernel, or rebuilt gnumach in PAE mode.
 
+
 # Building from sources
 
 If you want to generate these images, first get the `gnumach-1-branch-Xen-branch` branch from gnumach CVS.
@@ -75,7 +79,6 @@ Then use
 The current `hurd-modules` was built from the debian packages `hurd 20070606-2` and `libc0.3 2.6.1-1`.
 /!\ This means that when using this image, your GNU/Hurd system also needs to be a glibc version 2.6 or later-based one!
 
----
 
 # Miscellaneous
 
@@ -83,7 +86,6 @@ The current `hurd-modules` was built from the debian packages `hurd 20070606-2`
 
 [[!GNU_Savannah_task 5468]], [[!GNU_Savannah_task 6584]].
 
----
 
 # `pv-grub`
 
@@ -91,3 +93,15 @@ From Xen 4.0 on you'll be able to run the GNU Hurd directly using `pv-grub`,
 without the need to [prepare a special bootstrap
 image](http://youpibouh.thefreecat.org/hurd-xen/build_hurd-modules) (like an
 initrd).
+
+
+# Host-side Writeback Caching
+
+Optimization possible as it is with [[QEMU|hurd/running/qemu/discussion]],
+*Host-side Writeback Caching*?
+
+IRC, freenode, #hurd, 2011-06-08
+
+    <braunr> youpi: does xen provide disk caching options ?
+    <youpi> through a blktap, probably
+    <braunr> ok