diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/main.c b/kernel/main.c index ac970f1..d0308c4 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -2544,6 +2544,37 @@ module_param_cb(sema_probe, &nv_vgpu_sema_probe_ops, NULL, 0200); MODULE_PARM_DESC(sema_probe, "Dump sema-service map + slot values for a GPU VA"); /* + * Register the guest PMA scrubber channel buffer words (finish payload PA, + * host-semaphore PA) the guest scanner resolved: + * echo 0x11a8ff004,0x11a8ff000 > .../parameters/sema_scrubbuf_add + */ +static int nv_vgpu_sema_scrubbuf_set(const char *val, + const struct kernel_param *kp) +{ + char buf[64]; + char *comma; + u64 fin_pa = 0, hsem_pa = 0; + + strscpy(buf, val, sizeof(buf)); + comma = strchr(buf, ','); + if (!comma) + return -EINVAL; + *comma = '\0'; + if (kstrtoull(buf, 0, &fin_pa) || kstrtoull(comma + 1, 0, &hsem_pa)) + return -EINVAL; + + return gsp_sema_service_scrubbuf_add(fin_pa, hsem_pa); +} + +static const struct kernel_param_ops nv_vgpu_sema_scrubbuf_ops = { + .set = nv_vgpu_sema_scrubbuf_set, +}; + +module_param_cb(sema_scrubbuf_add, &nv_vgpu_sema_scrubbuf_ops, NULL, 0200); +MODULE_PARM_DESC(sema_scrubbuf_add, + "Register the PMA scrubber finish/host-sema PAs (hex fin,hex hsem)"); + +/* * Debug: run the page-table walks for a GPU VA with per-level tracing, * bypassing the pin/lat/pair map (see gsp_sema_service_walk_probe): * echo 0x20400f000 > .../parameters/walk_probe |