diff options
| author | Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> | 2026-02-05 18:42:27 +0000 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2026-02-19 06:42:11 +0000 |
| commit | 158ebb578cd5f7881fdc7c4ecebddcf9463f91fd (patch) | |
| tree | cffeb2ba247058b4a6a6f4cce8e7345f8e20d83a /drivers/hv | |
| parent | cf82dd5ea95815e6c0612b61118d2358ef5c05b0 (diff) | |
mshv: Handle insufficient root memory hypervisor statuses
When creating guest partition objects, the hypervisor may fail to
allocate root partition pages and return an insufficient memory status.
In this case, deposit memory using the root partition ID instead.
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com>
Reviewed-by: Mukesh R <mrathor@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/hv_common.c | 2 | ||||
| -rw-r--r-- | drivers/hv/hv_proc.c | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index f20596276662..6b67ac616789 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -794,6 +794,8 @@ static const struct hv_status_info hv_status_infos[] = { _STATUS_INFO(HV_STATUS_PROPERTY_VALUE_OUT_OF_RANGE, -EIO), _STATUS_INFO(HV_STATUS_INSUFFICIENT_MEMORY, -ENOMEM), _STATUS_INFO(HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY, -ENOMEM), + _STATUS_INFO(HV_STATUS_INSUFFICIENT_ROOT_MEMORY, -ENOMEM), + _STATUS_INFO(HV_STATUS_INSUFFICIENT_CONTIGUOUS_ROOT_MEMORY, -ENOMEM), _STATUS_INFO(HV_STATUS_INVALID_PARTITION_ID, -EINVAL), _STATUS_INFO(HV_STATUS_INVALID_VP_INDEX, -EINVAL), _STATUS_INFO(HV_STATUS_NOT_FOUND, -EIO), diff --git a/drivers/hv/hv_proc.c b/drivers/hv/hv_proc.c index 181f6d02bce3..5f4fd9c3231c 100644 --- a/drivers/hv/hv_proc.c +++ b/drivers/hv/hv_proc.c @@ -121,6 +121,18 @@ int hv_deposit_memory_node(int node, u64 partition_id, case HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY: num_pages = HV_MAX_CONTIGUOUS_ALLOCATION_PAGES; break; + + case HV_STATUS_INSUFFICIENT_CONTIGUOUS_ROOT_MEMORY: + num_pages = HV_MAX_CONTIGUOUS_ALLOCATION_PAGES; + fallthrough; + case HV_STATUS_INSUFFICIENT_ROOT_MEMORY: + if (!hv_root_partition()) { + hv_status_err(hv_status, "Unexpected root memory deposit\n"); + return -ENOMEM; + } + partition_id = HV_PARTITION_ID_SELF; + break; + default: hv_status_err(hv_status, "Unexpected!\n"); return -ENOMEM; @@ -134,6 +146,8 @@ bool hv_result_needs_memory(u64 status) switch (hv_result(status)) { case HV_STATUS_INSUFFICIENT_MEMORY: case HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY: + case HV_STATUS_INSUFFICIENT_ROOT_MEMORY: + case HV_STATUS_INSUFFICIENT_CONTIGUOUS_ROOT_MEMORY: return true; } return false; |