From: "Anirudh Rayabharam (Microsoft)" <[email protected]>
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 hypervisor exposes a synthetic register that can be read
to find the INTID that should be used for SINTs. This INTID is in the
PPI range.
Changes in v4:
- Hypervisor now exposes a synthetic register to read the SINT vector
instead of using an ACPI platform device. So make changes to accomodate
that.
Changes in v3:
- Moved the hv_root_partition() check into the reboot notifier
to avoid doing it multiple times.
v2:
https://lore.kernel.org/linux-hyperv/[email protected]/
Changes in v2:
Addressed review comments:
- Moved more stuff into mshv_synic.c
- Code simplifications
- Removed unnecessary debug prints
v1:
https://lore.kernel.org/linux-hyperv/[email protected]/
Anirudh Rayabharam (Microsoft) (2):
mshv: refactor synic init and cleanup
mshv: add arm64 support for doorbell & intercept SINTs
drivers/hv/mshv_root.h | 5 +-
drivers/hv/mshv_root_main.c | 59 ++----------
drivers/hv/mshv_synic.c | 181 +++++++++++++++++++++++++++++++++---
include/hyperv/hvgdk_mini.h | 2 +
4 files changed, 181 insertions(+), 66 deletions(-)
--
2.34.1
