Merge tag 'loongarch-kvm-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.9

* Set reserved bits as zero in CPUCFG.
* Start SW timer only when vcpu is blocking.
* Do not restart SW timer when it is expired.
* Remove unnecessary CSR register saving during enter guest.

1 files changed, 75 insertions, 32 deletions

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 865e10d0a06a..3b21afe5b488 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -897,6 +897,11 @@ static void xe_vma_destroy_late(struct xe_vma *vma)
 	struct xe_device *xe = vm->xe;
 	bool read_only = xe_vma_read_only(vma);
 
+	if (vma->ufence) {
+		xe_sync_ufence_put(vma->ufence);
+		vma->ufence = NULL;
+	}
+
 	if (xe_vma_is_userptr(vma)) {
 		struct xe_userptr *userptr = &to_userptr_vma(vma)->userptr;
 
@@ -995,9 +1000,16 @@ int xe_vm_prepare_vma(struct drm_exec *exec, struct xe_vma *vma,
 	int err;
 
 	XE_WARN_ON(!vm);
-	err = drm_exec_prepare_obj(exec, xe_vm_obj(vm), num_shared);
-	if (!err && bo && !bo->vm)
-		err = drm_exec_prepare_obj(exec, &bo->ttm.base, num_shared);
+	if (num_shared)
+		err = drm_exec_prepare_obj(exec, xe_vm_obj(vm), num_shared);
+	else
+		err = drm_exec_lock_obj(exec, xe_vm_obj(vm));
+	if (!err && bo && !bo->vm) {
+		if (num_shared)
+			err = drm_exec_prepare_obj(exec, &bo->ttm.base, num_shared);
+		else
+			err = drm_exec_lock_obj(exec, &bo->ttm.base);
+	}
 
 	return err;
 }
@@ -1601,6 +1613,16 @@ xe_vm_unbind_vma(struct xe_vma *vma, struct xe_exec_queue *q,
 
 	trace_xe_vma_unbind(vma);
 
+	if (vma->ufence) {
+		struct xe_user_fence * const f = vma->ufence;
+
+		if (!xe_sync_ufence_get_status(f))
+			return ERR_PTR(-EBUSY);
+
+		vma->ufence = NULL;
+		xe_sync_ufence_put(f);
+	}
+
 	if (number_tiles > 1) {
 		fences = kmalloc_array(number_tiles, sizeof(*fences),
 				       GFP_KERNEL);
@@ -1734,6 +1756,21 @@ err_fences:
 	return ERR_PTR(err);
 }
 
+static struct xe_user_fence *
+find_ufence_get(struct xe_sync_entry *syncs, u32 num_syncs)
+{
+	unsigned int i;
+
+	for (i = 0; i < num_syncs; i++) {
+		struct xe_sync_entry *e = &syncs[i];
+
+		if (xe_sync_is_ufence(e))
+			return xe_sync_ufence_get(e);
+	}
+
+	return NULL;
+}
+
 static int __xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma,
 			struct xe_exec_queue *q, struct xe_sync_entry *syncs,
 			u32 num_syncs, bool immediate, bool first_op,
@@ -1741,9 +1778,16 @@ static int __xe_vm_bind(struct xe_vm *vm, struct xe_vma *vma,
 {
 	struct dma_fence *fence;
 	struct xe_exec_queue *wait_exec_queue = to_wait_exec_queue(vm, q);
+	struct xe_user_fence *ufence;
 
 	xe_vm_assert_held(vm);
 
+	ufence = find_ufence_get(syncs, num_syncs);
+	if (vma->ufence && ufence)
+		xe_sync_ufence_put(vma->ufence);
+
+	vma->ufence = ufence ?: vma->ufence;
+
 	if (immediate) {
 		fence = xe_vm_bind_vma(vma, q, syncs, num_syncs, first_op,
 				       last_op);
@@ -2110,10 +2154,6 @@ vm_bind_ioctl_ops_create(struct xe_vm *vm, struct xe_bo *bo,
 		struct xe_vma_op *op = gpuva_op_to_vma_op(__op);
 
 		if (__op->op == DRM_GPUVA_OP_MAP) {
-			op->map.immediate =
-				flags & DRM_XE_VM_BIND_FLAG_IMMEDIATE;
-			op->map.read_only =
-				flags & DRM_XE_VM_BIND_FLAG_READONLY;
 			op->map.is_null = flags & DRM_XE_VM_BIND_FLAG_NULL;
 			op->map.pat_index = pat_index;
 		} else if (__op->op == DRM_GPUVA_OP_PREFETCH) {
@@ -2183,15 +2223,17 @@ static u64 xe_vma_max_pte_size(struct xe_vma *vma)
 {
 	if (vma->gpuva.flags & XE_VMA_PTE_1G)
 		return SZ_1G;
-	else if (vma->gpuva.flags & XE_VMA_PTE_2M)
+	else if (vma->gpuva.flags & (XE_VMA_PTE_2M | XE_VMA_PTE_COMPACT))
 		return SZ_2M;
+	else if (vma->gpuva.flags & XE_VMA_PTE_64K)
+		return SZ_64K;
 	else if (vma->gpuva.flags & XE_VMA_PTE_4K)
 		return SZ_4K;
 
 	return SZ_1G;	/* Uninitialized, used max size */
 }
 
-static u64 xe_vma_set_pte_size(struct xe_vma *vma, u64 size)
+static void xe_vma_set_pte_size(struct xe_vma *vma, u64 size)
 {
 	switch (size) {
 	case SZ_1G:
@@ -2200,9 +2242,13 @@ static u64 xe_vma_set_pte_size(struct xe_vma *vma, u64 size)
 	case SZ_2M:
 		vma->gpuva.flags |= XE_VMA_PTE_2M;
 		break;
+	case SZ_64K:
+		vma->gpuva.flags |= XE_VMA_PTE_64K;
+		break;
+	case SZ_4K:
+		vma->gpuva.flags |= XE_VMA_PTE_4K;
+		break;
 	}
-
-	return SZ_4K;
 }
 
 static int xe_vma_op_commit(struct xe_vm *vm, struct xe_vma_op *op)
@@ -2300,8 +2346,6 @@ static int vm_bind_ioctl_ops_parse(struct xe_vm *vm, struct xe_exec_queue *q,
 		switch (op->base.op) {
 		case DRM_GPUVA_OP_MAP:
 		{
-			flags |= op->map.read_only ?
-				VMA_CREATE_FLAG_READ_ONLY : 0;
 			flags |= op->map.is_null ?
 				VMA_CREATE_FLAG_IS_NULL : 0;
 
@@ -2432,7 +2476,7 @@ static int op_execute(struct drm_exec *exec, struct xe_vm *vm,
 	case DRM_GPUVA_OP_MAP:
 		err = xe_vm_bind(vm, vma, op->q, xe_vma_bo(vma),
 				 op->syncs, op->num_syncs,
-				 op->map.immediate || !xe_vm_in_fault_mode(vm),
+				 !xe_vm_in_fault_mode(vm),
 				 op->flags & XE_VMA_OP_FIRST,
 				 op->flags & XE_VMA_OP_LAST);
 		break;
@@ -2707,14 +2751,11 @@ static int vm_bind_ioctl_ops_execute(struct xe_vm *vm,
 	return 0;
 }
 
-#define SUPPORTED_FLAGS	\
-	(DRM_XE_VM_BIND_FLAG_READONLY | \
-	 DRM_XE_VM_BIND_FLAG_IMMEDIATE | DRM_XE_VM_BIND_FLAG_NULL)
+#define SUPPORTED_FLAGS	(DRM_XE_VM_BIND_FLAG_NULL | \
+	 DRM_XE_VM_BIND_FLAG_DUMPABLE)
 #define XE_64K_PAGE_MASK 0xffffull
 #define ALL_DRM_XE_SYNCS_FLAGS (DRM_XE_SYNCS_FLAG_WAIT_FOR_OP)
 
-#define MAX_BINDS	512	/* FIXME: Picking random upper limit */
-
 static int vm_bind_ioctl_check_args(struct xe_device *xe,
 				    struct drm_xe_vm_bind *args,
 				    struct drm_xe_vm_bind_op **bind_ops)
@@ -2726,16 +2767,16 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe,
 	    XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1]))
 		return -EINVAL;
 
-	if (XE_IOCTL_DBG(xe, args->extensions) ||
-	    XE_IOCTL_DBG(xe, args->num_binds > MAX_BINDS))
+	if (XE_IOCTL_DBG(xe, args->extensions))
 		return -EINVAL;
 
 	if (args->num_binds > 1) {
 		u64 __user *bind_user =
 			u64_to_user_ptr(args->vector_of_binds);
 
-		*bind_ops = kmalloc(sizeof(struct drm_xe_vm_bind_op) *
-				    args->num_binds, GFP_KERNEL);
+		*bind_ops = kvmalloc_array(args->num_binds,
+					   sizeof(struct drm_xe_vm_bind_op),
+					   GFP_KERNEL | __GFP_ACCOUNT);
 		if (!*bind_ops)
 			return -ENOMEM;
 
@@ -2825,7 +2866,7 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe,
 
 free_bind_ops:
 	if (args->num_binds > 1)
-		kfree(*bind_ops);
+		kvfree(*bind_ops);
 	return err;
 }
 
@@ -2913,13 +2954,15 @@ int xe_vm_bind_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 	}
 
 	if (args->num_binds) {
-		bos = kcalloc(args->num_binds, sizeof(*bos), GFP_KERNEL);
+		bos = kvcalloc(args->num_binds, sizeof(*bos),
+			       GFP_KERNEL | __GFP_ACCOUNT);
 		if (!bos) {
 			err = -ENOMEM;
 			goto release_vm_lock;
 		}
 
-		ops = kcalloc(args->num_binds, sizeof(*ops), GFP_KERNEL);
+		ops = kvcalloc(args->num_binds, sizeof(*ops),
+			       GFP_KERNEL | __GFP_ACCOUNT);
 		if (!ops) {
 			err = -ENOMEM;
 			goto release_vm_lock;
@@ -3060,10 +3103,10 @@ int xe_vm_bind_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 	for (i = 0; bos && i < args->num_binds; ++i)
 		xe_bo_put(bos[i]);
 
-	kfree(bos);
-	kfree(ops);
+	kvfree(bos);
+	kvfree(ops);
 	if (args->num_binds > 1)
-		kfree(bind_ops);
+		kvfree(bind_ops);
 
 	return err;
 
@@ -3087,10 +3130,10 @@ put_exec_queue:
 	if (q)
 		xe_exec_queue_put(q);
 free_objs:
-	kfree(bos);
-	kfree(ops);
+	kvfree(bos);
+	kvfree(ops);
 	if (args->num_binds > 1)
-		kfree(bind_ops);
+		kvfree(bind_ops);
 	return err;
 }