560.35.03

kernel-open/Kbuild

@@ -72,7 +72,7 @@ EXTRA_CFLAGS += -I$(src)/common/inc
 EXTRA_CFLAGS += -I$(src)
 EXTRA_CFLAGS += -Wall $(DEFINES) $(INCLUDES) -Wno-cast-qual -Wno-format-extra-args
 EXTRA_CFLAGS += -D__KERNEL__ -DMODULE -DNVRM
-EXTRA_CFLAGS += -DNV_VERSION_STRING=\"560.31.02\"
+EXTRA_CFLAGS += -DNV_VERSION_STRING=\"560.35.03\"
 
 ifneq ($(SYSSRCHOST1X),)
  EXTRA_CFLAGS += -I$(SYSSRCHOST1X)

kernel-open/common/inc/nvkms-kapi.h

@@ -1425,7 +1425,7 @@ struct NvKmsKapiFunctionsTable {
     );
 
     /*!
-     * Immediately reset the specified display semaphore to the pending state.
+     * Immediately initialize the specified display semaphore to the pending state.
      *
      * Must be called prior to applying a mode set that utilizes the specified
      * display semaphore for synchronization.
@@ -1438,7 +1438,7 @@ struct NvKmsKapiFunctionsTable {
      *                            for the specified device.
      */
     NvBool
-    (*resetDisplaySemaphore)
+    (*tryInitDisplaySemaphore)
     (
         struct NvKmsKapiDevice *device,
         NvU32 semaphoreIndex
@@ -1447,7 +1447,7 @@ struct NvKmsKapiFunctionsTable {
     /*!
      * Immediately set the specified display semaphore to the displayable state.
      *
-     * Must be called after \ref resetDisplaySemaphore to indicate a mode
+     * Must be called after \ref tryInitDisplaySemaphore to indicate a mode
      * configuration change that utilizes the specified display semaphore for
      * synchronization may proceed.
      *
@@ -1471,7 +1471,7 @@ struct NvKmsKapiFunctionsTable {
      *
      * This can be used by clients to restore a semaphore to a consistent state
      * when they have prepared it for use by previously calling
-     * \ref resetDisplaySemaphore() on it, but are then prevented from
+     * \ref tryInitDisplaySemaphore() on it, but are then prevented from
      * submitting the associated hardware operations to consume it due to the
      * subsequent failure of some software or hardware operation.
      *

kernel-open/nvidia-drm/nvidia-drm-modeset.c

@@ -192,6 +192,7 @@ static int __nv_drm_convert_in_fences(
         &to_nv_crtc_state(crtc_state)->req_config;
     struct nv_drm_plane_fence_cb_data *fence_data;
     uint32_t semaphore_index;
+    uint32_t idx_count;
     int ret, i;
 
     if (!crtc_state->active) {
@@ -244,9 +245,14 @@ static int __nv_drm_convert_in_fences(
             return -EINVAL;
         }
 
-        semaphore_index = nv_drm_next_display_semaphore(nv_dev);
+        for (idx_count = 0; idx_count < nv_dev->display_semaphores.count; idx_count++) {
+            semaphore_index = nv_drm_next_display_semaphore(nv_dev);
+            if (nvKms->tryInitDisplaySemaphore(nv_dev->pDevice, semaphore_index)) {
+                break;
+            }
+        }
 
-        if (!nvKms->resetDisplaySemaphore(nv_dev->pDevice, semaphore_index)) {
+        if (idx_count == nv_dev->display_semaphores.count) {
             NV_DRM_DEV_LOG_ERR(
                 nv_dev,
                 "Failed to initialize semaphore for plane fence");

kernel-open/nvidia-uvm/uvm_common.h

@@ -1,5 +1,5 @@
 /*******************************************************************************
-    Copyright (c) 2013-2023 NVIDIA Corporation
+    Copyright (c) 2013-2024 NVIDIA Corporation
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to
@@ -423,7 +423,9 @@ static void uvm_get_unaddressable_range(NvU32 num_va_bits, NvU64 *first, NvU64 *
     UVM_ASSERT(first);
     UVM_ASSERT(outer);
 
-    if (uvm_platform_uses_canonical_form_address()) {
+    // Maxwell GPUs (num_va_bits == 40b) do not support canonical form address
+    // even when plugged into platforms using it.
+    if (uvm_platform_uses_canonical_form_address() && num_va_bits > 40) {
         *first = 1ULL << (num_va_bits - 1);
         *outer = (NvU64)((NvS64)(1ULL << 63) >> (64 - num_va_bits));
     }

kernel-open/nvidia-uvm/uvm_populate_pageable.c

@@ -137,6 +137,15 @@ NV_STATUS uvm_populate_pageable_vma(struct vm_area_struct *vma,
     if (status != NV_OK)
         goto out;
 
+    // Kernel v6.6 introduced a bug in set_pte_range() around the handling of AF
+    // bit. Instead of setting the AF bit, the bit is incorrectly being cleared
+    // in set_pte_range() during first-touch fault handling. Calling
+    // handle_mm_fault() again takes a different code path which correctly sets
+    // the AF bit.
+    status = handle_fault(vma, start, vma_num_pages, !!(gup_flags & FOLL_WRITE));
+    if (status != NV_OK)
+        goto out;
+
     if (touch)
         ret = NV_PIN_USER_PAGES_REMOTE(mm, start, vma_num_pages, gup_flags, pages, NULL);
     else