Messages in this thread | | | Date | Wed, 16 Apr 2003 16:43:12 +0200 | From | Andi Kleen <> | Subject | Re: Reduce struct page by 8 bytes on 64bit |
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On Wed, Apr 16, 2003 at 04:26:38PM +0200, David S. Miller wrote: > From: Andi Kleen <ak@muc.de> > Date: Wed, 16 Apr 2003 16:07:15 +0200 > > How so? Of course I could write an generic set_bit32, but the question > is if these bit operations would be still atomic on SMP and not conflict with > fields occuping the same 8 byte slot. I remember you flaming someone > some time ago because he used set_bit in an atomic fashion on a type smaller > than unsigned long for example. > > It's OK if you align the pointer to 8 bytes, and subsequently the bit > offset as appropriate. :-)
On sparc64. But is that true too for all other 64bit architectures supported?
e.g. How about PA-RISC? (always seems to do things differently)
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