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| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-11-03 00:56:32 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-28 07:00:36 +0100 |
| commit | 1d65b1c886be6111f2347bd1a548bec58da17ccf (patch) | |
| tree | 030094052882745a280fee9da3cdbd5011e35779 /Documentation/filesystems/dax.txt | |
| parent | rtc-opal: Fix handling of firmware error codes, prevent busy loops (diff) | |
| download | linux-1d65b1c886be6111f2347bd1a548bec58da17ccf.tar.xz linux-1d65b1c886be6111f2347bd1a548bec58da17ccf.zip | |
powerpc/cell: Remove axonram driver
The QS21/22 IBM Cell blades had a southbridge chip called Axon. This
could have DDR DIMMs attached to it, though they were not directly
usable as RAM, instead they could be used as some sort of buffer, if
applications were written specifically to use the block device
provided by the driver.
Although the driver supposedly had direct access support, it was
apparently never tested (see commit 91117a20245b ("axonram: Fix bug in
direct_access")).
These machines have not been available for over 5 years, and were
never widely in use. It seems highly unlikely anyone is using this
driver.
In general we're happy to leave old drivers in the tree, but because
DAX is involved this driver is caught up in the ongoing work in that
area, but none of the DAX folks are able to test it.
So remove the driver, if any one *is* using it, we'll be happy to put
it back.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation/filesystems/dax.txt')
| -rw-r--r-- | Documentation/filesystems/dax.txt | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt index 3be3b266be41..70cb68bed2e8 100644 --- a/Documentation/filesystems/dax.txt +++ b/Documentation/filesystems/dax.txt @@ -46,7 +46,6 @@ stall the CPU for an extended period, you should also not attempt to implement direct_access. These block devices may be used for inspiration: -- axonram: Axon DDR2 device driver - brd: RAM backed block device driver - dcssblk: s390 dcss block device driver - pmem: NVDIMM persistent memory driver |