lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Wed, 2 May 2007 23:48:58 +0100
From:	Christoph Hellwig <>
To:	Michael Chan <>
Cc:	Jeff Garzik <>, David Miller <>,
	netdev <>
Subject: Re: [PATCH 3/20][BNX2]: Add 40-bit DMA workaround for 5708.

On Wed, May 02, 2007 at 01:02:41PM -0700, Michael Chan wrote:
> Let's say I have a 32-bit card that cannot do dual address cycle on a
> 64-bit dma_addr_t system without IOMMU.  If CONFIG_HIGHMEM is not set,
> wouldn't the device get > 32-bit DMA addresses that it cannot handle?

It needs to set it's dma mask to 32bits and the upper layers (net, block)
will do the bouncing for it.  

To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists