Warner Losh 8a5d94f94d Make nvd vs nda choice boot-time rather than build-time ... Introduce hw.nvme.use_nvd tunable. This tunable allows both nvd and nda to be installed in the kernel, while allowing only one of them to create devices. This is an all-or-nothing setting, and you can't change it after boot-time. However, it will allow easier A/B testing. Differential Revision: https://reviews.freebsd.org/D11825		2017-08-04 03:40:01 +00:00
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nvd.c	Make nvd vs nda choice boot-time rather than build-time	2017-08-04 03:40:01 +00:00