Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 3/3] generic sys_ipc wrapper | Date | Wed, 06 Jan 2010 19:16:12 +0000 |
| |
Christoph Hellwig <hch@lst.de> wrote:
> various architectures have different strategies for the SHMAT version 1 case > which apparently never gets used - at least on i386 it seems superflous as > the compat code on x86-64 and ia64 doesn't even bother to implement it.
The SHMAT version 1 case can be dropped for FRV and MN10300 - neither of them support iBCS.
> frv goes even further and uses unsigned long for all parameters execept for > "ptr" which is a pointer type everywhere. The change from int to unsigned > long for "third" and back to "int" for the others on frv should be fine due > to the in-register calling conventions for syscalls (we already had a > similar issue with the generic sys_ptrace), but I'd prefer to have the arch > maintainers looks over this in details.
That should be okay - the registers are all 32-bits, so int, long and pointers are all the same size.
David
| |