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| author | Conrad Meyer <cem@FreeBSD.org> | 2015-12-03 17:22:55 +0000 |
|---|---|---|
| committer | Conrad Meyer <cem@FreeBSD.org> | 2015-12-03 17:22:55 +0000 |
| commit | b23896a221a646c6241eb8dff24a3ed40b0b7aed (patch) | |
| tree | 92892da843da68a71a5902f34d1ed63b54e14aee /sys/dev/ntb/if_ntb/if_ntb.c | |
| parent | 64448a2a505e7982b3b91a5e574372e3cd29e5e9 (diff) | |
| download | src-b23896a221a646c6241eb8dff24a3ed40b0b7aed.tar.gz src-b23896a221a646c6241eb8dff24a3ed40b0b7aed.zip | |
if_ntb: Don't roundup MW size to full BAR size unnecessarily
Note that the MW allocation still must be BAR *aligned*. So, this only
loosens the constraints on MW allocation slightly. BAR-aligned does not
play well with large (GB+) BAR sizes.
Going forward, if anyone cares about if_ntb on very large BARs, I
suggest they add functionality to allocate a smaller window than the BAR
size, and set the BAR range to cover a window much larger than the
allocated window. This will require negotiating a window offset and
limit for protocol traffic. None of this is implemented in this
revision.
Sponsored by: EMC / Isilon Storage Division
Notes
Notes:
svn path=/head/; revision=291706
Diffstat (limited to 'sys/dev/ntb/if_ntb/if_ntb.c')
| -rw-r--r-- | sys/dev/ntb/if_ntb/if_ntb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/dev/ntb/if_ntb/if_ntb.c b/sys/dev/ntb/if_ntb/if_ntb.c index 4cbb3f76c4fb..b28502f1d832 100644 --- a/sys/dev/ntb/if_ntb/if_ntb.c +++ b/sys/dev/ntb/if_ntb/if_ntb.c @@ -1342,7 +1342,7 @@ ntb_set_mw(struct ntb_transport_ctx *nt, int num_mw, size_t size) return (EINVAL); xlat_size = roundup(size, mw->xlat_align_size); - buff_size = roundup(size, mw->xlat_align); + buff_size = xlat_size; /* No need to re-setup */ if (mw->xlat_size == xlat_size) |