Messages in this thread | | | Date | Fri, 5 Nov 2004 17:54:57 -0500 (EST) | From | Ricky Beam <> | Subject | Re: breakage: flex mmap patch for x86-64 |
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On Fri, 5 Nov 2004, Rafael J. Wysocki wrote: >> This prevents 32bit apps from running on x86_64. Backing out the Makefile >> and processor.h changes has everything working again. Perhaps something >> needs to check for a 32bit environment? I don't know if it's the change >> to TASK_SIZE or the "backwards" mmaps that's the real breakage. And at this >> point, I don't have time to test. >> >> (64bit apps work just fine.) > >Confirmed, and apparently it is not sifficient to change the TASK_SIZE >definition in include/asm-x86_64/processor.h to make the 32-bit userland >work. Hence, it seems that the "backwards" mmaps break things.
Looks like checking for PER_LINUX32 might fix it...
>>> if (current->personality & (ADDR_COMPAT_LAYOUT|PER_LINUX32))
--Ricky
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