[Xen-devel] [PATCH v2 0/3] Find automatically a PPI for the DOM0 event channel IRQ

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hello,

This patch series replaces the per-platform hardcoded event channel interrupt
to a generic solution. It will make the port to a new platform easier and may
avoid to introduce per-platform code with the new upcoming ACPI support.

This could be done by keeping track of vIRQ (emulated and assigned) used by
a domain.

While the new set of function to keep track of vIRQ is only used for PPI in
this series. We will need them for IRQ routing very soon.

Parth: I provided an updated branch on my personal repo [1]. It's based
on the latest upstream branch. You can use vgic_allocate_virq(d, 0), to
allocate the event channel PPI.

Major changes in v2:
    - Rework patch #2 to drop the lock
    - Rework vgic_free_virq which was completely buggy
    - Drop former patch #3 [2]. I will send a separate series to RAZ/WI
    register bits which are associated to unwired IRQ.


Sincerel yours,

[1] git://xenbits.xen.org/people/julieng/xen-unstable.git branch find-evtchn-v2
[2] https://patches.linaro.org/42184/

Julien Grall (3):
  xen/arm: vgic: Rename nr_lines into nr_spis
  xen/arm: vgic: Keep track of vIRQ used by a domain
  xen/arm: Find automatically a PPI for the DOM0 event channel interrupt

 xen/arch/arm/domain.c                | 14 +++++--
 xen/arch/arm/domain_build.c          | 16 ++++++++
 xen/arch/arm/gic-v2.c                |  2 -
 xen/arch/arm/gic-v3.c                |  2 -
 xen/arch/arm/platform.c              |  7 ----
 xen/arch/arm/platforms/xgene-storm.c |  5 ++-
 xen/arch/arm/vgic-v2.c               |  2 +-
 xen/arch/arm/vgic-v3.c               |  2 +-
 xen/arch/arm/vgic.c                  | 73 +++++++++++++++++++++++++++++++-----
 xen/arch/arm/vtimer.c                | 25 ++++++++++++
 xen/include/asm-arm/domain.h         |  3 +-
 xen/include/asm-arm/platform.h       |  4 --
 xen/include/asm-arm/vgic.h           | 17 ++++++++-
 13 files changed, 140 insertions(+), 32 deletions(-)

-- 
2.1.4


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