Looking into failures for shmat01 and shmt09 I came upon sys/shm.h,
which defines SHMLBA.
Unfortunately it is set to the pagesize, which is wong as well.
I've opened glibc bug #6471 for this.
If I patch sys/shm.h to the cache size the shmat01 test succeeds.
shmt09 needs an additional patch to correct the sbrk increment to
the SHMLBA size, which you find attached.
I'll submit a patch for mmap01 later this week.
Best regards,
Martin
Signed-off-by: Martin Habets <[EMAIL PROTECTED]>
On Wed, Apr 30, 2008 at 10:59:26PM +0100, Martin Habets wrote:
> LTP test mmap01 fails on sparc with:
>
> mmap01 1 FAIL : mmap() Failed on mmapfile, errno=22
>
> because the address passed in is only page aligned:
>
> /*
> * Initialize addr to align with the first page boundary above the
> * break address of the process.
> */
> addr = (void *) (((intptr_t)sbrk(0) + (page_sz - 1)) & ~(page_sz - 1));
> ...
> addr = mmap(addr, page_sz, PROT_READ | PROT_WRITE,
> MAP_FILE|MAP_SHARED|MAP_FIXED, fildes, 0);
>
> The address should be aligned to the value of SHMLBA as defined in
> asm/shmparam.h.
> See Documentation/cachetlb.txt for the explanation behind this.
> For most architectures this value is the page size, but not all.
>
> Unfortunately asm/shmparam.h is not suitable for inclusion in user space
> programs. I looked at sysconf(LEVEL1_DCACHE_SIZE), but that returns 0 on
> sparc.
> Is there another solution other than hardcoding the exceptions in
> architecture specific code?
>
> Thanks,
> Martin
Index: ltp/testcases/kernel/mem/shmt/shmt09.c
===================================================================
--- ltp.orig/testcases/kernel/mem/shmt/shmt09.c 2008-05-01 00:14:26.000000000 +0100
+++ ltp/testcases/kernel/mem/shmt/shmt09.c 2008-05-01 00:14:55.000000000 +0100
@@ -60,7 +60,7 @@
#ifdef __ia64__
#define INCREMENT 8388608 /* 8Mb */
-#elif defined (__mips__) || defined (__hppa__)
+#elif defined (__mips__) || defined (__hppa__) || defined (__sparc__)
#define INCREMENT 262144 /* 256Kb */
#elif defined __sh__ || defined (__arm__)
#define INCREMENT 16384 /* 16kb */
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