K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2021-07-31T00:23:43.068851Z
K 7
svn:log
V 688
nvme: Fix alignment on nvme structures

Remove __packed from nvme_command, nvme_completion and
nvme_dsm_trim. Add super-alignment to nvme_completion since it's always
at least that aligned in hardware (and in our existing uses of it
embedded in structures). It generates better code in
nvme_qpair_process_completions on riscv64 because otherwise the ABI
assumes a 4-byte alignment, and the same on all other platforms.

Reviewed by:		jrtc27@, mav@, chuck@
Sponsored by:		Netflix
Differential Revision:	https://reviews.freebsd.org/D31001

(cherry picked from commit fea3cf1d6da0acf40bc1d3dadeeea7eeccbc10dd)

Git Hash:   d85d7244d8bb20d5d5040045856c8038333736ce
Git Author: imp@FreeBSD.org
END