linux.git/include/linux/lguest_launcher.h, branch master

x86/lguest: Remove lguest support

2017-08-24T07:57:28+00:00

Lguest seems to be rather unused these days. It has seen only patches
ensuring it still builds the last two years and its official state is
"Odd Fixes".

Remove it in order to be able to clean up the paravirt code.

Signed-off-by: Juergen Gross 
Acked-by: Rusty Russell 
Acked-by: Thomas Gleixner 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: boris.ostrovsky@oracle.com
Cc: lguest@lists.ozlabs.org
Cc: rusty@rustcorp.com.au
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20170816173157.8633-3-jgross@suse.com
Signed-off-by: Ingo Molnar

lguest: remove NOTIFY call and eventfd facility.

2015-02-11T06:17:46+00:00

Disappointing, as this was kind of neat (especially getting to use RCU
to manage the address -> eventfd mapping).  But now the devices are PCI
handled in userspace, we get rid of both the NOTIFY hypercall and
the interface to connect an eventfd.

Signed-off-by: Rusty Russell

lguest: remove lguest bus definitions from header.

2015-02-11T06:17:42+00:00

Signed-off-by: Rusty Russell

lguest: add infrastructure for userspace to deliver a trap to the guest.

2015-02-11T06:17:30+00:00

This is required for instruction emulation to move to userspace.

Signed-off-by: Rusty Russell

lguest: write more information to userspace about pending traps.

2015-02-11T06:17:30+00:00

This is preparation for userspace handling MMIO and ioport accesses.

Signed-off-by: Rusty Russell

lguest: add operations to get/set a register from the Launcher.

2015-02-11T06:17:29+00:00

We use the ptrace API struct, and we currently don't let them set
anything but the normal registers (we'd have to filter the others).

Signed-off-by: Rusty Russell

lguest: fix comment style

2009-07-30T06:33:45+00:00

I don't really notice it (except to begrudge the extra vertical
space), but Ingo does.  And he pointed out that one excuse of lguest
is as a teaching tool, it should set a good example.

Signed-off-by: Rusty Russell 
Cc: Ingo Molnar

lguest: remove obsolete LHREQ_BREAK call

2009-06-12T12:57:11+00:00

We no longer need an efficient mechanism to force the Guest back into
host userspace, as each device is serviced without bothering the main
Guest process (aka. the Launcher).

Signed-off-by: Rusty Russell

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: move the initial guest page table creation code to the host

2008-12-29T22:56:11+00:00

This patch moves the initial guest page table creation code to the host,
so the launcher keeps working with PAE enabled configs.

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