This series extends the MSHV driver to properly handle additional
memory-related error codes from the Microsofot Hypervisor by depositing
memory pages when needed.
Currently, when the hypervisor returns HV_STATUS_INSUFFICIENT_MEMORY
during partition creation, the driver calls hv_call_deposit_pages() to
provide the necessary memory. However, there are other memory-related
error codes that indicate the hypervisor needs additional memory
resources, but the driver does not attempt to deposit pages for these
cases.
This series introduces the hv_result_oom() helper function macro to
identify all memory-related error codes (HV_STATUS_INSUFFICIENT_MEMORY,
HV_STATUS_INSUFFICIENT_BUFFERS, HV_STATUS_INSUFFICIENT_DEVICE_DOMAINS, and
HV_STATUS_INSUFFICIENT_ROOT_MEMORY) and ensures the driver attempts to
deposit pages for all of them via new hv_deposit_memory() helper.
With these changes, partition creation becomes more robust by handling
all scenarios where the hypervisor requires additional memory deposits.
---
Stanislav Kinsburskii (4):
mshv: Introduce hv_result_oom() helper function
mshv: Introduce hv_deposit_memory helper functions
mshv: Handle insufficient contiguous memory hypervisor status
mshv: Handle insufficient root memory hypervisor status
drivers/hv/hv_common.c | 3 ++
drivers/hv/hv_proc.c | 54 +++++++++++++++++++++++++++++++++++---
drivers/hv/mshv_root_hv_call.c | 45 +++++++++++++-------------------
drivers/hv/mshv_root_main.c | 5 +---
include/asm-generic/mshyperv.h | 13 +++++++++
include/hyperv/hvgdk_mini.h | 57 +++++++++++++++++++++-------------------
include/hyperv/hvhdk_mini.h | 2 +
7 files changed, 119 insertions(+), 60 deletions(-)
