diff options
| author | Stanislav Kinsburskii | 2026-02-05 18:42:21 +0000 |
|---|---|---|
| committer | Wei Liu | 2026-02-19 06:39:16 +0000 |
| commit | cf82dd5ea95815e6c0612b61118d2358ef5c05b0 (patch) | |
| tree | 6c0999afd6daf6fe9044edb7d0c162210a0f6445 /drivers/hv | |
| parent | ede54383e646821b499873c1caf2dd97551da8eb (diff) | |
mshv: Handle insufficient contiguous memory hypervisor status
The HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY status indicates that the
hypervisor lacks sufficient contiguous memory for its internal allocations.
When this status is encountered, allocate and deposit
HV_MAX_CONTIGUOUS_ALLOCATION_PAGES contiguous pages to the hypervisor.
HV_MAX_CONTIGUOUS_ALLOCATION_PAGES is defined in the hypervisor headers, a
deposit of this size will always satisfy the hypervisor's requirements.
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 | 1 | ||||
| -rw-r--r-- | drivers/hv/hv_proc.c | 4 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index f1c17fb60dc1..f20596276662 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -793,6 +793,7 @@ static const struct hv_status_info hv_status_infos[] = { _STATUS_INFO(HV_STATUS_UNKNOWN_PROPERTY, -EIO), _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_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 53622e5886b8..181f6d02bce3 100644 --- a/drivers/hv/hv_proc.c +++ b/drivers/hv/hv_proc.c @@ -118,6 +118,9 @@ int hv_deposit_memory_node(int node, u64 partition_id, switch (hv_result(hv_status)) { case HV_STATUS_INSUFFICIENT_MEMORY: break; + case HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY: + num_pages = HV_MAX_CONTIGUOUS_ALLOCATION_PAGES; + break; default: hv_status_err(hv_status, "Unexpected!\n"); return -ENOMEM; @@ -130,6 +133,7 @@ bool hv_result_needs_memory(u64 status) { switch (hv_result(status)) { case HV_STATUS_INSUFFICIENT_MEMORY: + case HV_STATUS_INSUFFICIENT_CONTIGUOUS_MEMORY: return true; } return false; |