Re: [PATCH] libata: Add a drivers/ide style DMA disable

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Alan Cox wrote:
This is useful when debugging, handling problem systems, or for
distributions just to get the system installed so it can be sorted
out later.

This is a bit smarter than the old IDE one and lets you do

libata.pata_dma=0		Disable all PATA DMA like old IDE
libata.pata_dma=1		Disk DMA only
libata.pata_dma=2		ATAPI DMA only
libata.pata_dma=4		CF DMA only

(or combinations thereof - 0,1,3 being the useful ones I suspect)

(I've split CF as it seems to be a seperate case of pain and suffering
different to the others and caused by assorted PIO wired adapters etc)

SATA is not affected - for one its not clear it makes sense to disable
DMA for SATA if even always possible, for two we've seen no failure evidence to justify needing to support this kind of hammer on SATA.

Signed-off-by: Alan Cox <alan@xxxxxxxxxx>

applied, after making it work on SATA too


-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux