* [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
@ 2021-06-07 20:28 Alex Deucher
2021-06-07 20:54 ` Ernst Sjöstrand
2021-06-07 21:32 ` Zhang, Boyuan
0 siblings, 2 replies; 6+ messages in thread
From: Alex Deucher @ 2021-06-07 20:28 UTC (permalink / raw)
To: amd-gfx; +Cc: Alex Deucher
Drop disabling of gfxoff during VCN use. This allows gfxoff
to kick in and potentially save power if the user is not using
gfx for color space conversion or scaling.
VCN1.0 had a bug which prevented it from working properly with
gfxoff, so we disabled it while using VCN. That said, most apps
today use gfx for scaling and color space conversion rather than
overlay planes so it was generally in use anyway. This was fixed
on VCN2+, but since we mostly use gfx for color space conversion
and scaling and rapidly powering up/down gfx can negate the
advantages of gfxoff, we left gfxoff disabled. As more
applications use overlay planes for color space conversion
and scaling, this starts to be a win, so go ahead and leave
gfxoff enabled.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 1dc11dbd62b7..647d2c31e8bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
}
if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
- amdgpu_gfx_off_ctrl(adev, true);
amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
AMD_PG_STATE_GATE);
r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
@@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
atomic_inc(&adev->vcn.total_submission_cnt);
if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
- amdgpu_gfx_off_ctrl(adev, false);
r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
true);
if (r)
--
2.31.1
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^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
2021-06-07 20:28 [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+ Alex Deucher
@ 2021-06-07 20:54 ` Ernst Sjöstrand
2021-06-07 21:29 ` Alex Deucher
2021-06-07 21:32 ` Zhang, Boyuan
1 sibling, 1 reply; 6+ messages in thread
From: Ernst Sjöstrand @ 2021-06-07 20:54 UTC (permalink / raw)
To: Alex Deucher; +Cc: amd-gfx mailing list
[-- Attachment #1.1: Type: text/plain, Size: 2453 bytes --]
Hi,
doesn't this patch apply the change to VCN1.0 also, which has that bug you
mentioned?
Regards
//Ernst
Den mån 7 juni 2021 kl 22:29 skrev Alex Deucher <alexander.deucher@amd.com>:
> Drop disabling of gfxoff during VCN use. This allows gfxoff
> to kick in and potentially save power if the user is not using
> gfx for color space conversion or scaling.
>
> VCN1.0 had a bug which prevented it from working properly with
> gfxoff, so we disabled it while using VCN. That said, most apps
> today use gfx for scaling and color space conversion rather than
> overlay planes so it was generally in use anyway. This was fixed
> on VCN2+, but since we mostly use gfx for color space conversion
> and scaling and rapidly powering up/down gfx can negate the
> advantages of gfxoff, we left gfxoff disabled. As more
> applications use overlay planes for color space conversion
> and scaling, this starts to be a win, so go ahead and leave
> gfxoff enabled.
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 1dc11dbd62b7..647d2c31e8bd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct
> work_struct *work)
> }
>
> if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
> - amdgpu_gfx_off_ctrl(adev, true);
> amdgpu_device_ip_set_powergating_state(adev,
> AMD_IP_BLOCK_TYPE_VCN,
> AMD_PG_STATE_GATE);
> r = amdgpu_dpm_switch_power_profile(adev,
> PP_SMC_POWER_PROFILE_VIDEO,
> @@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring
> *ring)
> atomic_inc(&adev->vcn.total_submission_cnt);
>
> if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
> - amdgpu_gfx_off_ctrl(adev, false);
> r = amdgpu_dpm_switch_power_profile(adev,
> PP_SMC_POWER_PROFILE_VIDEO,
> true);
> if (r)
> --
> 2.31.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>
[-- Attachment #1.2: Type: text/html, Size: 3662 bytes --]
[-- Attachment #2: Type: text/plain, Size: 154 bytes --]
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
2021-06-07 20:54 ` Ernst Sjöstrand
@ 2021-06-07 21:29 ` Alex Deucher
0 siblings, 0 replies; 6+ messages in thread
From: Alex Deucher @ 2021-06-07 21:29 UTC (permalink / raw)
To: Ernst Sjöstrand; +Cc: Alex Deucher, amd-gfx mailing list
On Mon, Jun 7, 2021 at 4:54 PM Ernst Sjöstrand <ernstp@gmail.com> wrote:
>
> Hi,
>
> doesn't this patch apply the change to VCN1.0 also, which has that bug you mentioned?
>
Nope. VCN1.0 uses vcn_v1_0_idle_work_handler() and
vcn_v1_0_ring_begin_use() as they have other special handling in
addition to this.
Alex
> Regards
> //Ernst
>
> Den mån 7 juni 2021 kl 22:29 skrev Alex Deucher <alexander.deucher@amd.com>:
>>
>> Drop disabling of gfxoff during VCN use. This allows gfxoff
>> to kick in and potentially save power if the user is not using
>> gfx for color space conversion or scaling.
>>
>> VCN1.0 had a bug which prevented it from working properly with
>> gfxoff, so we disabled it while using VCN. That said, most apps
>> today use gfx for scaling and color space conversion rather than
>> overlay planes so it was generally in use anyway. This was fixed
>> on VCN2+, but since we mostly use gfx for color space conversion
>> and scaling and rapidly powering up/down gfx can negate the
>> advantages of gfxoff, we left gfxoff disabled. As more
>> applications use overlay planes for color space conversion
>> and scaling, this starts to be a win, so go ahead and leave
>> gfxoff enabled.
>>
>> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
>> 1 file changed, 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> index 1dc11dbd62b7..647d2c31e8bd 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>> @@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
>> }
>>
>> if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
>> - amdgpu_gfx_off_ctrl(adev, true);
>> amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
>> AMD_PG_STATE_GATE);
>> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
>> @@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
>> atomic_inc(&adev->vcn.total_submission_cnt);
>>
>> if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
>> - amdgpu_gfx_off_ctrl(adev, false);
>> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
>> true);
>> if (r)
>> --
>> 2.31.1
>>
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
_______________________________________________
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^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
2021-06-07 20:28 [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+ Alex Deucher
2021-06-07 20:54 ` Ernst Sjöstrand
@ 2021-06-07 21:32 ` Zhang, Boyuan
2021-06-08 7:23 ` Christian König
1 sibling, 1 reply; 6+ messages in thread
From: Zhang, Boyuan @ 2021-06-07 21:32 UTC (permalink / raw)
To: Deucher, Alexander, amd-gfx; +Cc: Deucher, Alexander
[AMD Official Use Only]
Patch is
Reviewed-by: Boyuan Zhang <Boyuan.Zhang@amd.com>
Thanks,
Boyuan
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Alex Deucher
Sent: June 7, 2021 4:29 PM
To: amd-gfx@lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher@amd.com>
Subject: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
Drop disabling of gfxoff during VCN use. This allows gfxoff to kick in and potentially save power if the user is not using gfx for color space conversion or scaling.
VCN1.0 had a bug which prevented it from working properly with gfxoff, so we disabled it while using VCN. That said, most apps today use gfx for scaling and color space conversion rather than overlay planes so it was generally in use anyway. This was fixed on VCN2+, but since we mostly use gfx for color space conversion and scaling and rapidly powering up/down gfx can negate the advantages of gfxoff, we left gfxoff disabled. As more applications use overlay planes for color space conversion and scaling, this starts to be a win, so go ahead and leave gfxoff enabled.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 1dc11dbd62b7..647d2c31e8bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
}
if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
- amdgpu_gfx_off_ctrl(adev, true);
amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
AMD_PG_STATE_GATE);
r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO, @@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
atomic_inc(&adev->vcn.total_submission_cnt);
if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
- amdgpu_gfx_off_ctrl(adev, false);
r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
true);
if (r)
--
2.31.1
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^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
2021-06-07 21:32 ` Zhang, Boyuan
@ 2021-06-08 7:23 ` Christian König
2021-06-09 10:48 ` Zhu, James
0 siblings, 1 reply; 6+ messages in thread
From: Christian König @ 2021-06-08 7:23 UTC (permalink / raw)
To: Zhang, Boyuan, Deucher, Alexander, amd-gfx
Acked-by: Christian König <christian.koenig@amd.com>
Am 07.06.21 um 23:32 schrieb Zhang, Boyuan:
> [AMD Official Use Only]
>
> Patch is
> Reviewed-by: Boyuan Zhang <Boyuan.Zhang@amd.com>
>
> Thanks,
> Boyuan
>
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Alex Deucher
> Sent: June 7, 2021 4:29 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>
> Subject: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
>
> Drop disabling of gfxoff during VCN use. This allows gfxoff to kick in and potentially save power if the user is not using gfx for color space conversion or scaling.
>
> VCN1.0 had a bug which prevented it from working properly with gfxoff, so we disabled it while using VCN. That said, most apps today use gfx for scaling and color space conversion rather than overlay planes so it was generally in use anyway. This was fixed on VCN2+, but since we mostly use gfx for color space conversion and scaling and rapidly powering up/down gfx can negate the advantages of gfxoff, we left gfxoff disabled. As more applications use overlay planes for color space conversion and scaling, this starts to be a win, so go ahead and leave gfxoff enabled.
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 1dc11dbd62b7..647d2c31e8bd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
> }
>
> if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
> - amdgpu_gfx_off_ctrl(adev, true);
> amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
> AMD_PG_STATE_GATE);
> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO, @@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
> atomic_inc(&adev->vcn.total_submission_cnt);
>
> if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
> - amdgpu_gfx_off_ctrl(adev, false);
> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
> true);
> if (r)
> --
> 2.31.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Cboyuan.zhang%40amd.com%7Ca1496b99775a485b297d08d929f2e950%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637586945547703815%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=35UfXI3gTYEWcWKn4fFVhac8rHKyZlk6ASIZqjKINJQ%3D&reserved=0
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
2021-06-08 7:23 ` Christian König
@ 2021-06-09 10:48 ` Zhu, James
0 siblings, 0 replies; 6+ messages in thread
From: Zhu, James @ 2021-06-09 10:48 UTC (permalink / raw)
To: Christian König, Zhang, Boyuan, Deucher, Alexander, amd-gfx
[-- Attachment #1.1: Type: text/plain, Size: 4724 bytes --]
[AMD Official Use Only]
Reviewed-by: James Zhu <James.Zhu@amd.com>
Thanks & Best Regards!
James Zhu
________________________________
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Christian König <ckoenig.leichtzumerken@gmail.com>
Sent: Tuesday, June 8, 2021 3:23 AM
To: Zhang, Boyuan <Boyuan.Zhang@amd.com>; Deucher, Alexander <Alexander.Deucher@amd.com>; amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
Subject: Re: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
Acked-by: Christian König <christian.koenig@amd.com>
Am 07.06.21 um 23:32 schrieb Zhang, Boyuan:
> [AMD Official Use Only]
>
> Patch is
> Reviewed-by: Boyuan Zhang <Boyuan.Zhang@amd.com>
>
> Thanks,
> Boyuan
>
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Alex Deucher
> Sent: June 7, 2021 4:29 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>
> Subject: [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+
>
> Drop disabling of gfxoff during VCN use. This allows gfxoff to kick in and potentially save power if the user is not using gfx for color space conversion or scaling.
>
> VCN1.0 had a bug which prevented it from working properly with gfxoff, so we disabled it while using VCN. That said, most apps today use gfx for scaling and color space conversion rather than overlay planes so it was generally in use anyway. This was fixed on VCN2+, but since we mostly use gfx for color space conversion and scaling and rapidly powering up/down gfx can negate the advantages of gfxoff, we left gfxoff disabled. As more applications use overlay planes for color space conversion and scaling, this starts to be a win, so go ahead and leave gfxoff enabled.
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 1dc11dbd62b7..647d2c31e8bd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -393,7 +393,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
> }
>
> if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
> - amdgpu_gfx_off_ctrl(adev, true);
> amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
> AMD_PG_STATE_GATE);
> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO, @@ -413,7 +412,6 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
> atomic_inc(&adev->vcn.total_submission_cnt);
>
> if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
> - amdgpu_gfx_off_ctrl(adev, false);
> r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
> true);
> if (r)
> --
> 2.31.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Cjames.zhu%40amd.com%7Ccf628d25d7704545c4a108d92a4e428c%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637587337878810926%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hN8cuKAmvSK8b2%2B3uhT%2Fb6I6QnKlhIhZkjO6XeD6%2Bgg%3D&reserved=0
> _______________________________________________
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> amd-gfx@lists.freedesktop.org
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Cjames.zhu%40amd.com%7Ccf628d25d7704545c4a108d92a4e428c%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637587337878810926%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hN8cuKAmvSK8b2%2B3uhT%2Fb6I6QnKlhIhZkjO6XeD6%2Bgg%3D&reserved=0
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end of thread, other threads:[~2021-06-09 10:48 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-07 20:28 [PATCH] drm/amdgpu/vcn: drop gfxoff control for VCN2+ Alex Deucher
2021-06-07 20:54 ` Ernst Sjöstrand
2021-06-07 21:29 ` Alex Deucher
2021-06-07 21:32 ` Zhang, Boyuan
2021-06-08 7:23 ` Christian König
2021-06-09 10:48 ` Zhu, James
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