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  1. Bug #1454687
  2. Comment #5

Comment 5 for bug 1454687

Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2015-06-25 13:13 EDT-------
(In reply to comment #11)
> All patches cleanly cherry-pick into 3.19.
>
> The following config options are already set in Ubuntu:
>
> CONFIG_ZSWAP=y
> CONFIG_ZPOOL=y
> CONFIG_ZBUD=y
> CONFIG_ZSMALLOC=y
> CONFIG_CRYPTO_ALGAPI=y
> CONFIG_CRYPTO_DEV_NX=y
> CONFIG_CRYPTO_DEV_NX_COMPRESS=m
>
> I'll add the following:
> +CONFIG_842_COMPRESS=m
> +CONFIG_842_DECOMPRESS=m
> +CONFIG_CRYPTO_DEV_NX_COMPRESS_CRYPTO=m
> +CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERNV=m
> +CONFIG_CRYPTO_DEV_NX_COMPRESS_PSERIES=m
>
> The only changes are build these as modules, and add 842_COMPRESS.
>
> Does this work?

yep that's fine.

The downside of them being modules is that to use NX 842 with zswap - which requires configuration to all be done at boot time (currently, I have patches pending to change that) - the initramfs has to be rebuilt with the NX 842 modules. But that's not a big deal, just creating a dracut.d conf file and rerunning dracut.