diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/kernel/main.c b/kernel/main.c index c96abf8..458ba36 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -3660,6 +3660,38 @@ module_param_cb(dump_vidmem, &nv_vgpu_dump_vidmem_ops, NULL, 0200); MODULE_PARM_DESC(dump_vidmem, "Dump emulated vidmem range (hex offset,hex len)"); /* + * Whole-vidmem page-hash bracket: snapshot every 4 KB page hash of the + * emulated vidmem, then re-hash and report the pages whose content changed. + * echo 1 > .../parameters/vidmem_hash_snap + * echo 1 > .../parameters/vidmem_hash_diff + */ +static int nv_vgpu_vidmem_hash_snap_set(const char *val, + const struct kernel_param *kp) +{ + return gsp_sema_service_vidmem_hash_snapshot(); +} + +static int nv_vgpu_vidmem_hash_diff_set(const char *val, + const struct kernel_param *kp) +{ + return gsp_sema_service_vidmem_hash_diff("manual", 64); +} + +static const struct kernel_param_ops nv_vgpu_vidmem_hash_snap_ops = { + .set = nv_vgpu_vidmem_hash_snap_set, +}; + +static const struct kernel_param_ops nv_vgpu_vidmem_hash_diff_ops = { + .set = nv_vgpu_vidmem_hash_diff_set, +}; + +module_param_cb(vidmem_hash_snap, &nv_vgpu_vidmem_hash_snap_ops, NULL, 0200); +MODULE_PARM_DESC(vidmem_hash_snap, "Snapshot whole-vidmem page hashes"); +module_param_cb(vidmem_hash_diff, &nv_vgpu_vidmem_hash_diff_ops, NULL, 0200); +MODULE_PARM_DESC(vidmem_hash_diff, + "Diff whole-vidmem page hashes (tag manual, first 64 pages)"); + +/* * Debug: hex-dump or scan the BAR0 register shadow. Guest MMIO writes that go * through the mapped shadow never reach the write callback, so this is the * only way to observe registers the guest writes directly (e.g. the |