Merge tag 'drm-misc-fixes-2026-03-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

A page mapping fix for shmem fault handler, a power-off fix for ivpu, a
GFP_* flag fix for syncobj, and a MAINTAINERS update.

Signed-off-by: Dave Airlie <[email protected]>

From: Maxime Ripard <[email protected]>
Link: https://patch.msgid.link/20260326-lush-cuddly-limpet-ab2aa9@houat

Author: airlied

MAINTAINERS

@@ -8628,8 +8628,14 @@ F:	drivers/gpu/drm/lima/
 F:	include/uapi/drm/lima_drm.h
 
 DRM DRIVERS FOR LOONGSON
+M:	Jianmin Lv <[email protected]>
+M:	Qianhai Wu <[email protected]>
+R:	Huacai Chen <[email protected]>
+R:	Mingcong Bai <[email protected]>
+R:	Xi Ruoyao <[email protected]>
+R:	Icenowy Zheng <[email protected]>
 L:	[email protected]
-S:	Orphan
+S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	drivers/gpu/drm/loongson/
 

drivers/accel/ivpu/ivpu_drv.h

@@ -35,6 +35,7 @@
 #define IVPU_HW_IP_60XX 60
 
 #define IVPU_HW_IP_REV_LNL_B0 4
+#define IVPU_HW_IP_REV_NVL_A0 0
 
 #define IVPU_HW_BTRS_MTL 1
 #define IVPU_HW_BTRS_LNL 2

drivers/accel/ivpu/ivpu_hw.c

@@ -70,8 +70,10 @@ static void wa_init(struct ivpu_device *vdev)
 	if (ivpu_hw_btrs_gen(vdev) == IVPU_HW_BTRS_MTL)
 		vdev->wa.interrupt_clear_with_0 = ivpu_hw_btrs_irqs_clear_with_0_mtl(vdev);
 
-	if (ivpu_device_id(vdev) == PCI_DEVICE_ID_LNL &&
-	    ivpu_revision(vdev) < IVPU_HW_IP_REV_LNL_B0)
+	if ((ivpu_device_id(vdev) == PCI_DEVICE_ID_LNL &&
+	     ivpu_revision(vdev) < IVPU_HW_IP_REV_LNL_B0) ||
+	    (ivpu_device_id(vdev) == PCI_DEVICE_ID_NVL &&
+	     ivpu_revision(vdev) == IVPU_HW_IP_REV_NVL_A0))
 		vdev->wa.disable_clock_relinquish = true;
 
 	if (ivpu_test_mode & IVPU_TEST_MODE_CLK_RELINQ_ENABLE)

drivers/gpu/drm/drm_gem_shmem_helper.c

@@ -550,27 +550,27 @@ int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev,
 }
 EXPORT_SYMBOL_GPL(drm_gem_shmem_dumb_create);
 
-static bool drm_gem_shmem_try_map_pmd(struct vm_fault *vmf, unsigned long addr,
-				      struct page *page)
+static vm_fault_t try_insert_pfn(struct vm_fault *vmf, unsigned int order,
+				 unsigned long pfn)
 {
+	if (!order) {
+		return vmf_insert_pfn(vmf->vma, vmf->address, pfn);
 #ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
-	unsigned long pfn = page_to_pfn(page);
-	unsigned long paddr = pfn << PAGE_SHIFT;
-	bool aligned = (addr & ~PMD_MASK) == (paddr & ~PMD_MASK);
-
-	if (aligned &&
-	    pmd_none(*vmf->pmd) &&
-	    folio_test_pmd_mappable(page_folio(page))) {
-		pfn &= PMD_MASK >> PAGE_SHIFT;
-		if (vmf_insert_pfn_pmd(vmf, pfn, false) == VM_FAULT_NOPAGE)
-			return true;
-	}
+	} else if (order == PMD_ORDER) {
+		unsigned long paddr = pfn << PAGE_SHIFT;
+		bool aligned = (vmf->address & ~PMD_MASK) == (paddr & ~PMD_MASK);
+
+		if (aligned &&
+		    folio_test_pmd_mappable(page_folio(pfn_to_page(pfn)))) {
+			pfn &= PMD_MASK >> PAGE_SHIFT;
+			return vmf_insert_pfn_pmd(vmf, pfn, false);
+		}
 #endif
-
-	return false;
+	}
+	return VM_FAULT_FALLBACK;
 }
 
-static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
+static vm_fault_t drm_gem_shmem_any_fault(struct vm_fault *vmf, unsigned int order)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct drm_gem_object *obj = vma->vm_private_data;
@@ -581,6 +581,9 @@ static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
 	pgoff_t page_offset;
 	unsigned long pfn;
 
+	if (order && order != PMD_ORDER)
+		return VM_FAULT_FALLBACK;
+
 	/* Offset to faulty address in the VMA. */
 	page_offset = vmf->pgoff - vma->vm_pgoff;
 
@@ -593,20 +596,20 @@ static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
 		goto out;
 	}
 
-	if (drm_gem_shmem_try_map_pmd(vmf, vmf->address, pages[page_offset])) {
-		ret = VM_FAULT_NOPAGE;
-		goto out;
-	}
-
 	pfn = page_to_pfn(pages[page_offset]);
-	ret = vmf_insert_pfn(vma, vmf->address, pfn);
+	ret = try_insert_pfn(vmf, order, pfn);
 
  out:
 	dma_resv_unlock(shmem->base.resv);
 
 	return ret;
 }
 
+static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
+{
+	return drm_gem_shmem_any_fault(vmf, 0);
+}
+
 static void drm_gem_shmem_vm_open(struct vm_area_struct *vma)
 {
 	struct drm_gem_object *obj = vma->vm_private_data;
@@ -643,6 +646,9 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
 
 const struct vm_operations_struct drm_gem_shmem_vm_ops = {
 	.fault = drm_gem_shmem_fault,
+#ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
+	.huge_fault = drm_gem_shmem_any_fault,
+#endif
 	.open = drm_gem_shmem_vm_open,
 	.close = drm_gem_shmem_vm_close,
 };

drivers/gpu/drm/drm_syncobj.c

@@ -602,7 +602,7 @@ int drm_syncobj_get_handle(struct drm_file *file_private,
 	drm_syncobj_get(syncobj);
 
 	ret = xa_alloc(&file_private->syncobj_xa, handle, syncobj, xa_limit_32b,
-		       GFP_NOWAIT);
+		       GFP_KERNEL);
 	if (ret)
 		drm_syncobj_put(syncobj);
 
@@ -716,7 +716,7 @@ static int drm_syncobj_fd_to_handle(struct drm_file *file_private,
 	drm_syncobj_get(syncobj);
 
 	ret = xa_alloc(&file_private->syncobj_xa, handle, syncobj, xa_limit_32b,
-		       GFP_NOWAIT);
+		       GFP_KERNEL);
 	if (ret)
 		drm_syncobj_put(syncobj);