* APE malloc on amd64 not 64bit alligned.
@ 2020-03-08 21:01 Trevor Higgins
2020-03-08 21:42 ` [9front] " ori
0 siblings, 1 reply; 2+ messages in thread
From: Trevor Higgins @ 2020-03-08 21:01 UTC (permalink / raw)
To: 9front
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 need another plan
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [9front] APE malloc on amd64 not 64bit alligned.
2020-03-08 21:01 APE malloc on amd64 not 64bit alligned Trevor Higgins
@ 2020-03-08 21:42 ` ori
0 siblings, 0 replies; 2+ messages in thread
From: ori @ 2020-03-08 21:42 UTC (permalink / raw)
To: plan9fullfrontal, 9front
> 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.
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2020-03-08 21:01 APE malloc on amd64 not 64bit alligned Trevor Higgins
2020-03-08 21:42 ` [9front] " ori
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