Hi Alan,
Russell King <rmk@arm.linux.org.uk> writes:
> I'm not sure if you saw the other bits of the discussion on l-k, but I
> think we need a pte_init() construct which will initialise a pte in an
> architecture specific way to be "empty".
>
> This could be done with your page-based approach, but we should kill the
> PTRS_PER_PTE since that is not required here. What we actually want is
> a PTRS_PER_PAGE.
The appended patch relative to 2.4.0-test1-ac7 does add a PTE_INIT
macro to the s390 part and uses this if defined in shm.c. Else it does
a simple memset.
It also updates documentation for shm and gives the errno ENOSYS for
anon shared maps if SYSV is not configured in the kernel. I think this
is the more resonable value.
Could you please apply this.
Greetings
Christoph
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