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* [PATCH 2/3] drm/amdgpu: invalidate semphore workaround in amdgpu_virt
@ 2019-11-19  9:12 ` Changfeng.Zhu
  0 siblings, 0 replies; 4+ messages in thread
From: Changfeng.Zhu @ 2019-11-19  9:12 UTC (permalink / raw)
  To: Christian.Koenig-5C7GfCeVMHo, Jack.Xiao-5C7GfCeVMHo,
	Tao.Zhou1-5C7GfCeVMHo, Ray.Huang-5C7GfCeVMHo,
	Xinmei.Huang-5C7GfCeVMHo,
	amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
  Cc: changzhu

From: changzhu <Changfeng.Zhu@amd.com>

It may lose gpuvm invalidate acknowldege state across power-gating off
cycle. To avoid this issue in virt invalidation, add semaphore acquire
before invalidation and semaphore release after invalidation.

Change-Id: Ie98304e475166b53eed033462d76423b6b0fc25b
Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 22 ++++++++++++++++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |  3 ++-
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |  3 ++-
 3 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index f04eb1a64271..ee576158545e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -135,7 +135,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 
 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 					uint32_t reg0, uint32_t reg1,
-					uint32_t ref, uint32_t mask)
+					uint32_t ref, uint32_t mask,
+					uint32_t sem)
 {
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring = &kiq->ring;
@@ -144,9 +145,26 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 	uint32_t seq;
 
 	spin_lock_irqsave(&kiq->ring_lock, flags);
-	amdgpu_ring_alloc(ring, 32);
+	amdgpu_ring_alloc(ring, 60);
+
+	/*
+	 * It may lose gpuvm invalidate acknowldege state across power-gating
+	 * off cycle, add semaphore acquire before invalidation and semaphore
+	 * release after invalidation to avoid entering power gated state
+	 * to WA the Issue
+	 */
+
+	/* a read return value of 1 means semaphore acuqire */
+	amdgpu_ring_emit_reg_wait(ring, sem, 0x1, 0x1);
+
 	amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
 					    ref, mask);
+	/*
+	 * add semaphore release after invalidation,
+	 * write with 0 means semaphore release
+	 */
+	amdgpu_ring_emit_wreg(ring, sem, 0);
+
 	amdgpu_fence_emit_polling(ring, &seq);
 	amdgpu_ring_commit(ring);
 	spin_unlock_irqrestore(&kiq->ring_lock, flags);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index b0b2bdc750df..bda6a2f37dc0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -295,7 +295,8 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
 void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 					uint32_t reg0, uint32_t rreg1,
-					uint32_t ref, uint32_t mask);
+					uint32_t ref, uint32_t mask,
+					uint32_t sem);
 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index f25cd97ba5f2..1ae59af7836a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -448,9 +448,10 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 			!adev->in_gpu_reset) {
 		uint32_t req = hub->vm_inv_eng0_req + eng;
 		uint32_t ack = hub->vm_inv_eng0_ack + eng;
+		uint32_t sem = hub->vm_inv_eng0_sem + eng;
 
 		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, tmp,
-				1 << vmid);
+						   1 << vmid, sem);
 		return;
 	}
 
-- 
2.17.1

_______________________________________________
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amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply related	[flat|nested] 4+ messages in thread
* [PATCH 2/3] drm/amdgpu: invalidate semphore workaround in amdgpu_virt
@ 2019-11-19  9:12 ` Changfeng.Zhu
  0 siblings, 0 replies; 4+ messages in thread
From: Changfeng.Zhu @ 2019-11-19  9:12 UTC (permalink / raw)
  To: Christian.Koenig, Jack.Xiao, Tao.Zhou1, Ray.Huang, Xinmei.Huang, amd-gfx
  Cc: changzhu

From: changzhu <Changfeng.Zhu@amd.com>

It may lose gpuvm invalidate acknowldege state across power-gating off
cycle. To avoid this issue in virt invalidation, add semaphore acquire
before invalidation and semaphore release after invalidation.

Change-Id: Ie98304e475166b53eed033462d76423b6b0fc25b
Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 22 ++++++++++++++++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |  3 ++-
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |  3 ++-
 3 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index f04eb1a64271..ee576158545e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -135,7 +135,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 
 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 					uint32_t reg0, uint32_t reg1,
-					uint32_t ref, uint32_t mask)
+					uint32_t ref, uint32_t mask,
+					uint32_t sem)
 {
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring = &kiq->ring;
@@ -144,9 +145,26 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 	uint32_t seq;
 
 	spin_lock_irqsave(&kiq->ring_lock, flags);
-	amdgpu_ring_alloc(ring, 32);
+	amdgpu_ring_alloc(ring, 60);
+
+	/*
+	 * It may lose gpuvm invalidate acknowldege state across power-gating
+	 * off cycle, add semaphore acquire before invalidation and semaphore
+	 * release after invalidation to avoid entering power gated state
+	 * to WA the Issue
+	 */
+
+	/* a read return value of 1 means semaphore acuqire */
+	amdgpu_ring_emit_reg_wait(ring, sem, 0x1, 0x1);
+
 	amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
 					    ref, mask);
+	/*
+	 * add semaphore release after invalidation,
+	 * write with 0 means semaphore release
+	 */
+	amdgpu_ring_emit_wreg(ring, sem, 0);
+
 	amdgpu_fence_emit_polling(ring, &seq);
 	amdgpu_ring_commit(ring);
 	spin_unlock_irqrestore(&kiq->ring_lock, flags);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index b0b2bdc750df..bda6a2f37dc0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -295,7 +295,8 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
 void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 					uint32_t reg0, uint32_t rreg1,
-					uint32_t ref, uint32_t mask);
+					uint32_t ref, uint32_t mask,
+					uint32_t sem);
 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index f25cd97ba5f2..1ae59af7836a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -448,9 +448,10 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 			!adev->in_gpu_reset) {
 		uint32_t req = hub->vm_inv_eng0_req + eng;
 		uint32_t ack = hub->vm_inv_eng0_ack + eng;
+		uint32_t sem = hub->vm_inv_eng0_sem + eng;
 
 		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, tmp,
-				1 << vmid);
+						   1 << vmid, sem);
 		return;
 	}
 
-- 
2.17.1

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply related	[flat|nested] 4+ messages in thread
* Re: [PATCH 2/3] drm/amdgpu: invalidate semphore workaround in amdgpu_virt
@ 2019-11-19  9:53     ` Christian König
  0 siblings, 0 replies; 4+ messages in thread
From: Christian König @ 2019-11-19  9:53 UTC (permalink / raw)
  To: Changfeng.Zhu, Christian.Koenig-5C7GfCeVMHo,
	Jack.Xiao-5C7GfCeVMHo, Tao.Zhou1-5C7GfCeVMHo,
	Ray.Huang-5C7GfCeVMHo, Xinmei.Huang-5C7GfCeVMHo,
	amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW

Am 19.11.19 um 10:12 schrieb Changfeng.Zhu:
> From: changzhu <Changfeng.Zhu@amd.com>
>
> It may lose gpuvm invalidate acknowldege state across power-gating off
> cycle. To avoid this issue in virt invalidation, add semaphore acquire
> before invalidation and semaphore release after invalidation.
>
> Change-Id: Ie98304e475166b53eed033462d76423b6b0fc25b
> Signed-off-by: changzhu <Changfeng.Zhu@amd.com>

Still needs more cleanup, but for now that patch is Reviewed-by: 
Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 22 ++++++++++++++++++++--
>   drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |  3 ++-
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |  3 ++-
>   3 files changed, 24 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> index f04eb1a64271..ee576158545e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> @@ -135,7 +135,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
>   
>   void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   					uint32_t reg0, uint32_t reg1,
> -					uint32_t ref, uint32_t mask)
> +					uint32_t ref, uint32_t mask,
> +					uint32_t sem)
>   {
>   	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
>   	struct amdgpu_ring *ring = &kiq->ring;
> @@ -144,9 +145,26 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   	uint32_t seq;
>   
>   	spin_lock_irqsave(&kiq->ring_lock, flags);
> -	amdgpu_ring_alloc(ring, 32);
> +	amdgpu_ring_alloc(ring, 60);
> +
> +	/*
> +	 * It may lose gpuvm invalidate acknowldege state across power-gating
> +	 * off cycle, add semaphore acquire before invalidation and semaphore
> +	 * release after invalidation to avoid entering power gated state
> +	 * to WA the Issue
> +	 */
> +
> +	/* a read return value of 1 means semaphore acuqire */
> +	amdgpu_ring_emit_reg_wait(ring, sem, 0x1, 0x1);
> +
>   	amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
>   					    ref, mask);
> +	/*
> +	 * add semaphore release after invalidation,
> +	 * write with 0 means semaphore release
> +	 */
> +	amdgpu_ring_emit_wreg(ring, sem, 0);
> +
>   	amdgpu_fence_emit_polling(ring, &seq);
>   	amdgpu_ring_commit(ring);
>   	spin_unlock_irqrestore(&kiq->ring_lock, flags);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> index b0b2bdc750df..bda6a2f37dc0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> @@ -295,7 +295,8 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
>   void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
>   void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   					uint32_t reg0, uint32_t rreg1,
> -					uint32_t ref, uint32_t mask);
> +					uint32_t ref, uint32_t mask,
> +					uint32_t sem);
>   int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
>   int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
>   int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index f25cd97ba5f2..1ae59af7836a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -448,9 +448,10 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
>   			!adev->in_gpu_reset) {
>   		uint32_t req = hub->vm_inv_eng0_req + eng;
>   		uint32_t ack = hub->vm_inv_eng0_ack + eng;
> +		uint32_t sem = hub->vm_inv_eng0_sem + eng;
>   
>   		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, tmp,
> -				1 << vmid);
> +						   1 << vmid, sem);
>   		return;
>   	}
>   

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [PATCH 2/3] drm/amdgpu: invalidate semphore workaround in amdgpu_virt
@ 2019-11-19  9:53     ` Christian König
  0 siblings, 0 replies; 4+ messages in thread
From: Christian König @ 2019-11-19  9:53 UTC (permalink / raw)
  To: Changfeng.Zhu, Christian.Koenig, Jack.Xiao, Tao.Zhou1, Ray.Huang,
	Xinmei.Huang, amd-gfx

Am 19.11.19 um 10:12 schrieb Changfeng.Zhu:
> From: changzhu <Changfeng.Zhu@amd.com>
>
> It may lose gpuvm invalidate acknowldege state across power-gating off
> cycle. To avoid this issue in virt invalidation, add semaphore acquire
> before invalidation and semaphore release after invalidation.
>
> Change-Id: Ie98304e475166b53eed033462d76423b6b0fc25b
> Signed-off-by: changzhu <Changfeng.Zhu@amd.com>

Still needs more cleanup, but for now that patch is Reviewed-by: 
Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 22 ++++++++++++++++++++--
>   drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |  3 ++-
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |  3 ++-
>   3 files changed, 24 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> index f04eb1a64271..ee576158545e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> @@ -135,7 +135,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
>   
>   void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   					uint32_t reg0, uint32_t reg1,
> -					uint32_t ref, uint32_t mask)
> +					uint32_t ref, uint32_t mask,
> +					uint32_t sem)
>   {
>   	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
>   	struct amdgpu_ring *ring = &kiq->ring;
> @@ -144,9 +145,26 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   	uint32_t seq;
>   
>   	spin_lock_irqsave(&kiq->ring_lock, flags);
> -	amdgpu_ring_alloc(ring, 32);
> +	amdgpu_ring_alloc(ring, 60);
> +
> +	/*
> +	 * It may lose gpuvm invalidate acknowldege state across power-gating
> +	 * off cycle, add semaphore acquire before invalidation and semaphore
> +	 * release after invalidation to avoid entering power gated state
> +	 * to WA the Issue
> +	 */
> +
> +	/* a read return value of 1 means semaphore acuqire */
> +	amdgpu_ring_emit_reg_wait(ring, sem, 0x1, 0x1);
> +
>   	amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
>   					    ref, mask);
> +	/*
> +	 * add semaphore release after invalidation,
> +	 * write with 0 means semaphore release
> +	 */
> +	amdgpu_ring_emit_wreg(ring, sem, 0);
> +
>   	amdgpu_fence_emit_polling(ring, &seq);
>   	amdgpu_ring_commit(ring);
>   	spin_unlock_irqrestore(&kiq->ring_lock, flags);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> index b0b2bdc750df..bda6a2f37dc0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> @@ -295,7 +295,8 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
>   void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
>   void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
>   					uint32_t reg0, uint32_t rreg1,
> -					uint32_t ref, uint32_t mask);
> +					uint32_t ref, uint32_t mask,
> +					uint32_t sem);
>   int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
>   int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
>   int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index f25cd97ba5f2..1ae59af7836a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -448,9 +448,10 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
>   			!adev->in_gpu_reset) {
>   		uint32_t req = hub->vm_inv_eng0_req + eng;
>   		uint32_t ack = hub->vm_inv_eng0_ack + eng;
> +		uint32_t sem = hub->vm_inv_eng0_sem + eng;
>   
>   		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, tmp,
> -				1 << vmid);
> +						   1 << vmid, sem);
>   		return;
>   	}
>   

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amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-11-19  9:53 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-11-19  9:12 [PATCH 2/3] drm/amdgpu: invalidate semphore workaround in amdgpu_virt Changfeng.Zhu
2019-11-19  9:12 ` Changfeng.Zhu
     [not found] ` <20191119091247.4596-1-changfeng.zhu-5C7GfCeVMHo@public.gmane.org>
2019-11-19  9:53   ` Christian König
2019-11-19  9:53     ` Christian König

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