# the latest Java 2 SDK on your execution path: <http://java.sun.com>
# Also, you will need Apache's 'ant' build tool: <http://ant.apache.org>
#
-# If you received this sourec as part of a Xen release, you should find
+# If you received this source as part of a Xen release, you should find
# that appropriate versions of the build tools are already installed in
# the initial system setup.
-This is stuff we probably want to implement in the near future. I
-think I have them in a sensible priority order -- the first few would
-be nice to fix before a code release. The later ones can be
-longer-term goals.
+This is stuff we probably want to implement in the near future.
-- Keir (16/3/03)
-1. ACCURATE TIMERS AND WALL-CLOCK TIME
---------------------------------------
-Currently our long-term timebase free runs on CPU0, with no external
-calibration. We should run ntpd on domain 0 and allow this to warp
-Xen's timebase. Once this is done, we can have a timebase per CPU and
-not worry about relative drift (since they'll all get sync'ed
-periodically by ntp).
+1. DOMAIN-0 MANAGEMENT DAEMON
+-----------------------------
+A better control daemon is required for domain 0, which keeps proper
+track of machine resources and can make sensible policy choices. This
+may require support in Xen; for example, notifications (eg. DOMn is
+killed), and requests (eg. can DOMn allocate x frames of memory?).
2. ASSIGNING DOMAINS TO PROCESSORS
----------------------------------
siblings in the same package). We then use this to balance domains
across packages, and across virtual processors within a package.
-3. DOMAIN 0 MANAGEMENT DAEMON
------------------------------
-A better control daemon is required for domain 0, which keeps proper
-track of machine resources and can make sensible policy choices. This
-may require support in Xen; for example, notifications (eg. DOMn is
-killed), and requests (eg. can DOMn allocate x frames of memory?).
-
-4. SANE NETWORK ROUTING
+3. SANE NETWORK ROUTING
-----------------------
The current virtual firewall/router is completely broken. Needs a new
design and implementation!
-5. NETWORK CHECKSUM OFFLOAD
----------------------------
-All the NICs that we support can checksum packets on behalf of guest
-OSes. We need to add appropriate flags to and from each domain to
-indicate, on transmit, which packets need the checksum added and, on
-receive, which packets have been checked out as okay. We can steal
-Linux's interface, which is entirely sane given NIC limitations.
-
-6. MODULE SUPPORT FOR XEN
--------------------------
-Network and blkdev drivers are bloating Xen. At some point we want to
-build drivers as modules, stick them in a cheesy ramfs, then relocate
-them one by one at boot time. If a driver duccessfully probes hardware
-we keep it, otherwise we blow it away. Alternative is to have a
-central PCI ID to driver name repository. We then use that to decide
-which drivers to load.
-
-Most of the hard stuff (relocating and the like) is done for us by
-Linux's module system.
-
-7. NEW DESIGN FEATURES
-----------------------
-This includes the last-chance page cache, and the unified buffer cache.
-
Graveyard
((p->tot_pages - 1) << PAGE_SHIFT);
virt_startinfo_address->dom_id = p->domain;
- virt_startinfo_address->flags = IS_PRIV(p) ? SIF_PRIVILEGED : 0;
- // guest os can have console if:
- // 1) its privileged (need iopl right now)
- // 2) its the owner of the console (and therefore will get kbd/mouse events)
- // 3) xen hasnt tried to touch the console (see console.h)
- virt_startinfo_address->flags |= (IS_PRIV(p) && CONSOLE_ISOWNER(p) ) ? SIF_CONSOLE : 0;
+ virt_startinfo_address->flags = 0;
+ if ( IS_PRIV(p) )
+ {
+ virt_startinfo_address->flags |= SIF_PRIVILEGED;
+ if ( CONSOLE_ISOWNER(p) )
+ virt_startinfo_address->flags |= SIF_CONSOLE;
+ }
if ( initrd_len )
{
}
*dst = '\0';
- /* If this guy's getting the console we'd better let go */
+ /* If this guy's getting the console we'd better let go. */
if ( virt_startinfo_address->flags & SIF_CONSOLE )
{
- // should reset the console, but seems to work anyhow...
+ /* NB. Should reset the console here. */
opt_console = 0;
}
unsigned short compute_cksum(unsigned short *buf, int count)
{
- /* Function written by ek247
- * Computes IP and UDP checksum.
- * To be used for the fake console packets
- * created in console_export
- */
-
- unsigned long sum=0;
-
- while (count--)
- {
- sum+=*buf++;
- if (sum & 0xFFFF0000)
- {
- //carry occured, so wrap around
- sum &=0xFFFF;
- sum++;
- }
- }
- return ~(sum & 0xFFFF);
+ unsigned long sum = 0;
+ while ( count-- )
+ sum += *buf++;
+ sum += sum >> 16;
+ sum += sum >> 16;
+ return (unsigned short)~sum;
}
p->state = TASK_RUNNING;
__add_to_runqueue_head(p);
- //__add_to_runqueue_tail(p);
/* set the BVT parameters */
if (p->avt < schedule_data[p->processor].svt)
tmp = list_entry(curr, struct timer_list, list);
next = curr->next;
- list_del(curr); // not needed
+ list_del(curr); /* not needed */
internal_add_timer(tmp);
curr = next;
}
static inline void do_process_times(struct task_struct *p,
unsigned long user, unsigned long system)
{
- //unsigned long psecs;
-
-// psecs = (p->times.tms_utime += user);
- //psecs += (p->times.tms_stime += system);
}
void update_one_process(struct task_struct *p, unsigned long user,
unsigned long system, int cpu)
{
-// p->per_cpu_utime[cpu] += user;
-// p->per_cpu_stime[cpu] += system;
do_process_times(p, user, system);
}
* Usage: elf-reloc <old base> <new base> <image>
*
* Relocates <image> from <old base> address to <new base> address by
- * frobbing the Elf headers. Segment contents are unmodified!
+ * frobbing the Elf headers. Segment contents are unmodified.
*/
#include <stdio.h>
* This is a HACKED figlet source file for Xen.
*
* Hacked to output C octal strings for inclusion in a header file.
- * Support for opening zippe files is removed.
+ * Support for opening zipped files is removed.
*
- * Go to www.figlet.org for teh unhacked Figlet sources!
+ * Go to www.figlet.org for the unhacked Figlet sources.
*/
/****************************************************************************
projects / xen.git / commitdiff