; Dan
Carpenter
Subject: Re: [PATCH] dma-mapping: benchmark: check the validity of dma mask
bits
On 2020-12-12 10:18, Barry Song wrote:
While dma_mask_bits is larger than 64, the bahvaiour is undefined. On the
other hand, dma_mask_bits which is smaller than 20 (1MB) makes no sense
in real hardware
Subject: Re: [PATCH] dma-mapping: benchmark: check the validity of dma mask
> bits
>
> On 2020-12-12 10:18, Barry Song wrote:
> > While dma_mask_bits is larger than 64, the bahvaiour is undefined. On the
> > other hand, dma_mask_bits which is smaller than 20 (1MB) makes no sense
&
On 2020-12-12 10:18, Barry Song wrote:
While dma_mask_bits is larger than 64, the bahvaiour is undefined. On the
other hand, dma_mask_bits which is smaller than 20 (1MB) makes no sense
in real hardware.
Reported-by: Dan Carpenter
Signed-off-by: Barry Song
---
kernel/dma/map_benchmark.c | 6 +
