diff options
| author | Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com> | 2021-11-19 10:23:05 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-02-07 17:59:52 -0500 |
| commit | 4717fe3d8dec42bc951a44f41efc95d635d26325 (patch) | |
| tree | af452fa95a3b5a1062761cce4db0d3fe80eea513 /drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | |
| parent | be072b06c7397004e6464b4225e13c31ed0b9ca3 (diff) | |
drm/amdkfd: CRIU checkpoint and restore xnack mode
Recoverable page faults are represented by the xnack mode setting inside
a kfd process and are used to represent the device page faults. For CR,
we don't consider negative values which are typically used for querying
the current xnack mode without modifying it.
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index ab5107a3fe36..3ec44f71307d 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1848,6 +1848,11 @@ static int criu_checkpoint_process(struct kfd_process *p, memset(&process_priv, 0, sizeof(process_priv)); process_priv.version = KFD_CRIU_PRIV_VERSION; + /* For CR, we don't consider negative xnack mode which is used for + * querying without changing it, here 0 simply means disabled and 1 + * means enabled so retry for finding a valid PTE. + */ + process_priv.xnack_mode = p->xnack_enabled ? 1 : 0; ret = copy_to_user(user_priv_data + *priv_offset, &process_priv, sizeof(process_priv)); @@ -2241,6 +2246,16 @@ static int criu_restore_process(struct kfd_process *p, return -EINVAL; } + pr_debug("Setting XNACK mode\n"); + if (process_priv.xnack_mode && !kfd_process_xnack_mode(p, true)) { + pr_err("xnack mode cannot be set\n"); + ret = -EPERM; + goto exit; + } else { + pr_debug("set xnack mode: %d\n", process_priv.xnack_mode); + p->xnack_enabled = process_priv.xnack_mode; + } + exit: return ret; } |