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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/basic_percpu_ops_test.c
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@@ -167,7 +167,7 @@ struct percpu_list_node *this_cpu_list_pop(struct percpu_list *list,
for (;;) {
struct percpu_list_node *head;
intptr_t *targetptr, expectnot, *load;
off_t offset;
long offset;
int ret, cpu;
cpu = rseq_cpu_start();