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Starting with Ubuntu 24.04, building the selftests with the big endian
compiler (which defaults to 32-bit) fails with errors:
stack_expansion_ldst.c:178:37: error: format '%lx' expects argument
of type 'long unsigned int', but argument 2 has type 'rlim_t' {aka 'long long unsigned int'}
subpage_prot.c:214:38: error: format '%lx' expects argument of type
'long unsigned int', but argument 3 has type 'off_t' {aka 'long long int'}
Prior to 24.04 rlim_t was long unsigned int, and off_t was long int.
Cast to unsigned long long and long long before passing to printf to
avoid the errors.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241106130453.1741013-3-mpe@ellerman.id.au
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Now that the powerpc code behaves the same as other architectures we
can drop the special cases we had.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200724092528.1578671-5-mpe@ellerman.id.au
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Update the stack expansion load/store test to take into account the
new allowance of 4224 bytes below the stack pointer.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200724092528.1578671-3-mpe@ellerman.id.au
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We have custom stack expansion checks that it turns out are extremely
badly tested and contain bugs, surprise. So add some tests that
exercise the code and capture the current boundary conditions.
The signal test currently fails on 64-bit kernels because the 2048
byte allowance for the signal frame is too small, we will fix that in
a subsequent patch.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200724092528.1578671-1-mpe@ellerman.id.au
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