diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1179-drm-amdgpu-use-spin_lock_irqsave-to-protect-vm_manag.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1179-drm-amdgpu-use-spin_lock_irqsave-to-protect-vm_manag.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1179-drm-amdgpu-use-spin_lock_irqsave-to-protect-vm_manag.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1179-drm-amdgpu-use-spin_lock_irqsave-to-protect-vm_manag.patch new file mode 100644 index 00000000..892c8023 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1179-drm-amdgpu-use-spin_lock_irqsave-to-protect-vm_manag.patch @@ -0,0 +1,44 @@ +From 00815a2b5fbef55d4b284ba6355898b21cfc82f7 Mon Sep 17 00:00:00 2001 +From: Philip Yang <Philip.Yang@amd.com> +Date: Wed, 30 Jan 2019 15:21:16 -0500 +Subject: [PATCH 1179/2940] drm/amdgpu: use spin_lock_irqsave to protect + vm_manager.pasid_idr +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +amdgpu_vm_get_task_info is called from interrupt handler and sched timeout +workqueue, we should use irq version spin_lock to avoid deadlock. + +Change-Id: Ifedd4b97535bf0b5d3936edd2d9688957020efd4 +Signed-off-by: Philip Yang <Philip.Yang@amd.com> +Reviewed-by: Christian König <christian.koenig@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +index 7b4d4e2cc2ca..c6297e054166 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +@@ -3331,14 +3331,15 @@ void amdgpu_vm_get_task_info(struct amdgpu_device *adev, unsigned int pasid, + struct amdgpu_task_info *task_info) + { + struct amdgpu_vm *vm; ++ unsigned long flags; + +- spin_lock(&adev->vm_manager.pasid_lock); ++ spin_lock_irqsave(&adev->vm_manager.pasid_lock, flags); + + vm = idr_find(&adev->vm_manager.pasid_idr, pasid); + if (vm) + *task_info = vm->task_info; + +- spin_unlock(&adev->vm_manager.pasid_lock); ++ spin_unlock_irqrestore(&adev->vm_manager.pasid_lock, flags); + } + + /** +-- +2.17.1 + |