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selftests/rseq: Fix ppc32 offsets by using long rather than off_t

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The semantic of off_t is for file offsets. We mean to use it as an
offset from a pointer. We really expect it to fit in a single register,
and not use a 64-bit type on 32-bit architectures.

Fix runtime issues on ppc32 where the offset is always 0 due to
inconsistency between the argument type (off_t -> 64-bit) and type
expected by the inline assembler (32-bit).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220124171253.22072-11-mathieu.desnoyers@efficios.com
This commit is contained in:
Mathieu Desnoyers
2022-01-24 12:12:48 -05:00
committed by Peter Zijlstra
parent de6b52a214
commit 26dc8a6d8e
9 changed files with 11 additions and 11 deletions
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2
tools/testing/selftests/rseq/rseq-arm.h
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@@ -217,7 +217,7 @@ error2:
static inline __attribute__((always_inline))
int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
off_t voffp, intptr_t *load, int cpu)
long voffp, intptr_t *load, int cpu)
{
RSEQ_INJECT_C(9)