litmus-rt.git/drivers/lguest/Kconfig, branch wip-edzl-critique

lguest: use eventfds for device notification

2009-06-12T12:57:10+00:00

Currently, when a Guest wants to perform I/O it calls LHCALL_NOTIFY with
an address: the main Launcher process returns with this address, and figures
out what device to run.

A far nicer model is to let processes bind an eventfd to an address: if we
find one, we simply signal the eventfd.

Signed-off-by: Rusty Russell 
Cc: Davide Libenzi

lguest: PAE support

2009-06-12T12:57:08+00:00

This version requires that host and guest have the same PAE status.
NX cap is not offered to the guest, yet.

Signed-off-by: Matias Zabaljauregui 
Signed-off-by: Rusty Russell

x86: remove the Voyager 32-bit subarch

2009-02-22T23:54:01+00:00

Impact: remove unused/broken code

The Voyager subarch last built successfully on the v2.6.26 kernel
and has been stale since then and does not build on the v2.6.27,
v2.6.28 and v2.6.29-rc5 kernels.

No actual users beyond the maintainer reported this breakage.
Patches were sent and most of the fixes were accepted but the
discussion around how to do a few remaining issues cleanly
fizzled out with no resolution and the code remained broken.

In the v2.6.30 x86 tree development cycle 32-bit subarch support
has been reworked and removed - and the Voyager code, beyond the
build problems already known, needs serious and significant
changes and probably a rewrite to support it.

CONFIG_X86_VOYAGER has been marked BROKEN then. The maintainer has
been notified but no patches have been sent so far to fix it.

While all other subarchs have been converted to the new scheme,
voyager is still broken. We'd prefer to receive patches which
clean up the current situation in a constructive way, but even in
case of removal there is no obstacle to add that support back
after the issues have been sorted out in a mutually acceptable
fashion.

So remove this inactive code for now.

Signed-off-by: Ingo Molnar

x86, VisWS: turn into generic arch, eliminate Kconfig specials

2008-07-10T16:55:47+00:00

remove leftover traces of various VISWS related Kconfig specials.

Signed-off-by: Ingo Molnar

Remove bogus duplicate CONFIG_LGUEST_GUEST entry.

2008-01-20T05:29:39+00:00

It was moved to arch/x86/lguest/Kconfig, but I lost the deletion part in a
patch suffle.  My confused one-liner "fix" to turn it on is also reverted:
84f7466ee20cc094aa38617abfa2f3834871f054

Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds

Selecting LGUEST should turn on Guest support, as in 2.6.23.

2008-01-18T22:05:48+00:00

There's currently no way to turn on Lguest guest support; the planned
Kconfig virtualization reorg didn't get into 2.6.25.

This was unnoticed because if you already had CONFIG_LGUEST_GUEST=y in
your config, it worked.  Too bad about new users...

Also, the Kconfig help was wrong now the virtio drivers are merged.

Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds

Remove old lguest bus and drivers.

2007-10-23T05:49:55+00:00

This gets rid of the lguest bus, drivers and DMA mechanism, to make
way for a generic virtio mechanism.

Signed-off-by: Rusty Russell

Lguest currently depends on 32-bit x86, not just x86.

2007-10-23T05:49:48+00:00

Signed-off-by: Rusty Russell

Normalize config options for guest support

2007-10-23T05:49:47+00:00

1) Group all the "guest OS" support options together, under a PARAVIRT_GUEST
   menu.
2) Make those options select CONFIG_PARAVIRT, as suggested by Andi.
3) Make kconfig help titles consistent.

Signed-off-by: Rusty Russell 
Cc: Andi Kleen 
Cc: Zach Amsden 
Cc: Jeremy Fitzhardinge 
Cc: Chris Wright

lguest should depend on CONFIG_FUTEX

2007-08-24T04:23:33+00:00

It uses get_futex_key().

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds