Re: [Xen-devel] [PATCH RFC] xen: make it possible to disable XEN_TMEM
From: Konrad Rzeszutek Wilk
Date: Mon Oct 03 2016 - 10:19:36 EST
On Mon, Oct 03, 2016 at 04:02:48PM +0200, Vitaly Kuznetsov wrote:
> XEN_TMEM config option has no prompt and it is enabled as module by
> default if CLEANCACHE or FRONTSWAP options are set with no way to disable
> it. The only in-tree user of the tmem interface is xen-selfballoon which
And if CONFIG_XEN=y .
> can itself be disabled so it makes sense to make it possible to disable
During boot-time with arguments.
> XEN_TMEM too. In theory, both these options could be unified under the
> XEN_SELFBALLOONING but other (out-of-tree) users of the tmem interface
> may exist and someone may want to keep them supported without enabling
I think going the route of XEN_SELFBALLOONING may be better.
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> - I don't know much about tmem and its users thus RFC.
> drivers/xen/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
> index f15bb3b7..0ea1df8 100644
> --- a/drivers/xen/Kconfig
> +++ b/drivers/xen/Kconfig
> @@ -166,7 +166,7 @@ config SWIOTLB_XEN
> select SWIOTLB
> config XEN_TMEM
> - tristate
> + tristate "Transcendent Memory support for Xen"
> depends on !ARM && !ARM64
> default m if (CLEANCACHE || FRONTSWAP)
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