linux-kernel - Re: [PATCH 02/83] drm/radeon: reduce number of free VMIDs and pipes in KV

Open Source and information security mailing list archives

Message-ID: <53C7B7EC.3070404@amd.com>
Date:	Thu, 17 Jul 2014 14:47:56 +0300
From:	Oded Gabbay <oded.gabbay@....com>
To:	Christian König <christian.koenig@....com>,
	Michel Dänzer <michel@...nzer.net>,
	David Airlie <airlied@...ux.ie>,
	Alex Deucher <alexander.deucher@....com>,
	Jerome Glisse <j.glisse@...il.com>
CC:	Andrew Lewycky <Andrew.Lewycky@....com>,
	<linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH 02/83] drm/radeon: reduce number of free VMIDs and pipes
 in KV

On 14/07/14 10:58, Christian König wrote:
> Am 14.07.2014 09:38, schrieb Michel Dänzer:
>> On 11.07.2014 06:50, Oded Gabbay wrote:
>>> @@ -5876,8 +5871,13 @@ int cik_ib_parse(struct radeon_device *rdev, struct
>>> radeon_ib *ib)
>>>    */
>>>   int cik_vm_init(struct radeon_device *rdev)
>>>   {
>>> -    /* number of VMs */
>>> -    rdev->vm_manager.nvm = 16;
>>> +    /*
>>> +     * number of VMs
>>> +     * VMID 0 is reserved for Graphics
>>> +     * radeon compute will use VMIDs 1-7
>>> +     * KFD will use VMIDs 8-15
>>> +     */
>>> +    rdev->vm_manager.nvm = 8;
>> This comment is inaccurate: Graphics can use VMIDs 1-7 as well.
>
> Actually VMID 0 is reserved for system use and graphics operation only use VMIDs
> 1-7.
>
> Christian.
Will be fixed in v2 of the patchset

	Oded
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
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