Problem with malloc on PA
Matthew Wilcox
willy@ldl.fc.hp.com
Wed Apr 25 14:29:00 GMT 2001
The PA-RISC architecture requires a lock to be 16-byte aligned. So we
add __attribute__((aligned (16))) to our lock type and that aligns it
to a 16-byte offset within the struct. But if the struct isn't 16-byte
aligned, this loses.
malloc() currently returns pointers which are 8-byte aligned. Would it
be possible to change it so that they're 16-byte aligned? I took a quick
look at the code, and I saw MALLOC_ALIGN_MASK, but I'm not sure exactly
what effects simply changing this would have. I suspect I would want
to change MALLOC_ALIGNMENT as well, but not SIZE_SZ?
help greatly appreciated.
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