[v2,0/3] hvc/xen: Xen console fixes.

Message

David Woodhouse Oct. 20, 2023, 4:15 p.m. UTC

It started out relatively simple, fixing the fact that the secondary
consoles didn't work at *all* due to bugs in the IRQ setup. There were
one or two other simple fixes that I snuck into the same patch in v1.

But it's much more broken than that, so split the fixes out, especially
the last one for hot-unplug.

Preserving the Reviewed-by: from Jürgen on the first two seems fair;
the third patch is new and exciting but *does* fix the case of removing
the console while userspace is spamming it.

And all I really wanted to do this week was spin up a PV guest under KVM 
so I could play with its SMEP behaviour...

David Woodhouse (3):
      hvc/xen: fix event channel handling for secondary consoles
      hvc/xen: fix error path in xen_hvc_init() to always register frontend driver
      hvc/xen: fix console unplug

 drivers/tty/hvc/hvc_xen.c | 39 ++++++++++++++++++++++++++++-----------
 1 file changed, 28 insertions(+), 11 deletions(-)