Sent: 2020年4月23日 2:43
To: Tao, Yintian ; Liu, Monk ; Kuehling,
Felix
Cc: amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/amdgpu: protect kiq overrun
Am 22.04.20 um 16:50 schrieb Yintian Tao:
> Wait for the oldest sequence on the kiq ring to be signaled in order
> to make sure ther
Am 22.04.20 um 16:50 schrieb Yintian Tao:
Wait for the oldest sequence on the kiq ring
to be signaled in order to make sure there
will be no kiq overrun.
v2: remove unused the variable and correct
kiq max_sub_num value
First of all this should probably be added to the fence handling code
oyun ; Tao, Yintian ; Liu, Monk
; Kuehling, Felix
Cc: amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/amdgpu: protect kiq overrun
The amdgpu_ring_alloc() function checks if the requested number of DW don't
exceed the maximum submission size.
It does NOT check if there is enough room on
PATCH] drm/amdgpu: protect kiq overrun
The amdgpu_ring_alloc() function checks if the requested number of DW don't
exceed the maximum submission size.
It does NOT check if there is enough room on the ring. That would require MMIO
access and that is what we want to avoid.
Regards,
Christian.
A
The amdgpu_ring_alloc() function checks if the requested number of DW
don't exceed the maximum submission size.
It does NOT check if there is enough room on the ring. That would
require MMIO access and that is what we want to avoid.
Regards,
Christian.
Am 22.04.20 um 16:54 schrieb Liu, Shaoy
[AMD Official Use Only - Internal Distribution Only]
I think each kiq operation will call ring_alloc for the package space , why
not just check whether this allocation is succeed or not ?
Shaoyun.liu
-Original Message-
From: amd-gfx On Behalf Of Yintian Tao
Sent: Wednesday, Apri
