linux-toradex.git/drivers/lguest/lguest_user.c, branch v4.4.123

lguest: explicitly set miscdevice's private_data NULL

2015-03-24T01:22:06+00:00

There is a proposed change to the miscdevice's behaviour on open(). Currently
file->private_data stays NULL, but only because we don't have an open-entry in
struct file_operations.

This may change so that private_data, more consistently, is always set to
struct miscdevice, not only *if* the driver has it's own open() routine and
fops-entry, see https://lkml.org/lkml/2014/12/4/939 and commit
94e4fe2cab3d43b3ba7c3f721743006a8c9d913a

In short: If we rely on file->private_data being NULL, we should ensure
it is NULL ourselves.

Signed-off-by: Martin Kepplinger 
Signed-off-by: Rusty Russell

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: add iomem region, where guest page faults get sent to userspace.

2015-02-11T06:17:33+00:00

This lets us implement PCI.

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: improve code readability in lg_cpu_start.

2013-04-29T23:54:30+00:00

Make the container_of call friendlier and fix some comment slip-ups.

Signed-off-by: Cosmin Paraschiv 
Cc: Daniel Baluta 
Signed-off-by: Rusty Russell

lguest: add export.h to lguest files for THIS_MODULE/EXPORT_SYMBOL

2011-10-31T23:32:13+00:00

We need this in advance of the module.h cleanup, or we'll
get compile errors like this:

  CC      drivers/lguest/lguest_device.o
drivers/lguest/lguest_device.c: In function ‘lguest_devices_init’:
drivers/lguest/lguest_device.c:490: error: ‘THIS_MODULE’ undeclared (first use in this function)

Signed-off-by: Paul Gortmaker

lguest: update comments

2011-07-22T05:09:50+00:00

Also removes a long-unused #define and an extraneous semicolon.

Signed-off-by: Rusty Russell

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi