From: ori@eigenstate.org
To: plan9fullfrontal@qs.co.nz, 9front@9front.org
Subject: Re: [9front] APE malloc on amd64 not 64bit alligned.
Date: Sun, 8 Mar 2020 14:42:32 -0700 [thread overview]
Message-ID: <78179A023495F178ECAB0D2302D514F8@eigenstate.org> (raw)
In-Reply-To: <0fa7882b-d950-5217-a15b-1e2ba09bd73a@qs.co.nz>
> I don't know if this is just an FYI or if it should be classified as a bug.
>
> 99% of APE mallocs return XXXX4 or XXXXC , with 1% being XXXXXX0.
>
> The kernel returns 96% XXXXX0 and 4% XXXXX8 (in one test of 1M random
> sized mallocs).
>
> Should APE malloc on amd64 return 64bit alligned pointers?
>
>
> Are many people using amd64 9front ?
we're *technically* within spec, since amd64
doesn't care about alignment unless you're
using the vector registers, so we're within
our rights to define the max alignment of a
type as 4.
it'd probably be a good idea to change it, since
some ported software may make assumptions.
yes, I'm on amd64.
prev parent reply other threads:[~2020-03-08 21:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-08 21:01 Trevor Higgins
2020-03-08 21:42 ` ori [this message]
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