[v1] ARM64 support for doorbell and intercept SINTs

[PATCH 0/2] ARM64 support for doorbell and intercept SINTs

Anirudh Rayabharam posted 2 patches 1 week, 4 days ago

Diff against v2 v3
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drivers/hv/mshv_root.h      |   6 +-
drivers/hv/mshv_root_main.c |  15 +++-
drivers/hv/mshv_synic.c     | 156 ++++++++++++++++++++++++++++++++++--
3 files changed, 164 insertions(+), 13 deletions(-)

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[PATCH 0/2] ARM64 support for doorbell and intercept SINTs

Posted by Anirudh Rayabharam 1 week, 4 days ago

From: "Anirudh Rayabharam (Microsoft)" <anirudh@anirudhrb.com>

On x86, the HYPERVISOR_CALLBACK_VECTOR is used to receive synthetic
interrupts (SINTs) from the hypervisor for doorbells and intercepts.
There is no such vector reserved for arm64.

On arm64, the INTID for SINTs should be in the SGI or PPI range. The
hypervisor exposes a virtual device in the ACPI that reserves a
PPI for this use. Introduce a platform_driver that binds to this ACPI
device and obtains the interrupt vector that can be used for SINTs.

Anirudh Rayabharam (Microsoft) (2):
  mshv: rename synic per-cpu init/cleanup functions
  mshv: add arm64 support for doorbell & intercept SINTs

 drivers/hv/mshv_root.h      |   6 +-
 drivers/hv/mshv_root_main.c |  15 +++-
 drivers/hv/mshv_synic.c     | 156 ++++++++++++++++++++++++++++++++++--
 3 files changed, 164 insertions(+), 13 deletions(-)

-- 
2.34.1