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From: "Zhao, Yong" <Yong.Zhao-5C7GfCeVMHo@public.gmane.org>
To: "Kuehling, Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>,
	"amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Subject: Re: [PATCH 1/1] drm/amdgpu: Raise KFD unpinned system memory limit
Date: Mon, 25 Nov 2019 23:19:06 +0000	[thread overview]
Message-ID: <DM6PR12MB277806E387DFC479BDD8AB47F04A0@DM6PR12MB2778.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20191125212819.21392-1-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>


[-- Attachment #1.1: Type: text/plain, Size: 2388 bytes --]

[AMD Official Use Only - Internal Distribution Only]

Reviewed-by: Yong Zhao <Yong.Zhao-5C7GfCeVMHo@public.gmane.org>
________________________________
From: amd-gfx <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org> on behalf of Felix Kuehling <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
Sent: Monday, November 25, 2019 4:28 PM
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org <amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Subject: [PATCH 1/1] drm/amdgpu: Raise KFD unpinned system memory limit

Allow KFD applications to use more unpinned system memory through
HMM.

Signed-off-by: Felix Kuehling <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index e43a95514b41..b6d1958d514f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -85,7 +85,7 @@ static bool check_if_add_bo_to_vm(struct amdgpu_vm *avm,
 }

 /* Set memory usage limits. Current, limits are
- *  System (TTM + userptr) memory - 3/4th System RAM
+ *  System (TTM + userptr) memory - 15/16th System RAM
  *  TTM memory - 3/8th System RAM
  */
 void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
@@ -98,7 +98,7 @@ void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
         mem *= si.mem_unit;

         spin_lock_init(&kfd_mem_limit.mem_limit_lock);
-       kfd_mem_limit.max_system_mem_limit = (mem >> 1) + (mem >> 2);
+       kfd_mem_limit.max_system_mem_limit = mem - (mem >> 4);
         kfd_mem_limit.max_ttm_mem_limit = (mem >> 1) - (mem >> 3);
         pr_debug("Kernel memory limit %lluM, TTM limit %lluM\n",
                 (kfd_mem_limit.max_system_mem_limit >> 20),
--
2.24.0

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WARNING: multiple messages have this Message-ID (diff)
From: "Zhao, Yong" <Yong.Zhao@amd.com>
To: "Kuehling, Felix" <Felix.Kuehling@amd.com>,
	"amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 1/1] drm/amdgpu: Raise KFD unpinned system memory limit
Date: Mon, 25 Nov 2019 23:19:06 +0000	[thread overview]
Message-ID: <DM6PR12MB277806E387DFC479BDD8AB47F04A0@DM6PR12MB2778.namprd12.prod.outlook.com> (raw)
Message-ID: <20191125231906.fe-uxjW786UBPEWdhMPzWbVz5T1x69wNhrgYVp7lNhU@z> (raw)
In-Reply-To: <20191125212819.21392-1-Felix.Kuehling@amd.com>


[-- Attachment #1.1: Type: text/plain, Size: 2213 bytes --]

[AMD Official Use Only - Internal Distribution Only]

Reviewed-by: Yong Zhao <Yong.Zhao@amd.com>
________________________________
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Felix Kuehling <Felix.Kuehling@amd.com>
Sent: Monday, November 25, 2019 4:28 PM
To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
Subject: [PATCH 1/1] drm/amdgpu: Raise KFD unpinned system memory limit

Allow KFD applications to use more unpinned system memory through
HMM.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index e43a95514b41..b6d1958d514f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -85,7 +85,7 @@ static bool check_if_add_bo_to_vm(struct amdgpu_vm *avm,
 }

 /* Set memory usage limits. Current, limits are
- *  System (TTM + userptr) memory - 3/4th System RAM
+ *  System (TTM + userptr) memory - 15/16th System RAM
  *  TTM memory - 3/8th System RAM
  */
 void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
@@ -98,7 +98,7 @@ void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
         mem *= si.mem_unit;

         spin_lock_init(&kfd_mem_limit.mem_limit_lock);
-       kfd_mem_limit.max_system_mem_limit = (mem >> 1) + (mem >> 2);
+       kfd_mem_limit.max_system_mem_limit = mem - (mem >> 4);
         kfd_mem_limit.max_ttm_mem_limit = (mem >> 1) - (mem >> 3);
         pr_debug("Kernel memory limit %lluM, TTM limit %lluM\n",
                 (kfd_mem_limit.max_system_mem_limit >> 20),
--
2.24.0

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https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&amp;data=02%7C01%7Cyong.zhao%40amd.com%7C808d3732d1d74a7cd05208d771ee6f9b%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637103141200385929&amp;sdata=yywimvE%2FuidOPQb9IYLZi95MbfnFrW0Swmp11iYi4%2BI%3D&amp;reserved=0

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

  parent reply	other threads:[~2019-11-25 23:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-25 21:28 [PATCH 1/1] drm/amdgpu: Raise KFD unpinned system memory limit Felix Kuehling
2019-11-25 21:28 ` Felix Kuehling
     [not found] ` <20191125212819.21392-1-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
2019-11-25 23:19   ` Zhao, Yong [this message]
2019-11-25 23:19     ` Zhao, Yong

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