powerpc/vas: Alloc and setup IRQ and trigger port address

Browse source

Allocate a xive irq on each chip with a vas instance. The NX coprocessor
raises a host CPU interrupt via vas if it encounters page fault on user
space request buffer. Subsequent patches register the trigger port with
the NX coprocessor, and create a vas fault handler for this interrupt
mapping.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1587016806.2275.1050.camel@hbabu-laptop

...

This commit is contained in:

Haren Myneni 2020-04-15 23:00:06 -07:00 • committed by Michael Ellerman

parent 73a8077938

commit c20e1e299d

2 changed files with 40 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

44

arch/powerpc/platforms/powernv/vas.c

View file

2

arch/powerpc/platforms/powernv/vas.h

View file