As far as I'm aware, the kernel used to crash when forking inside a
transaction (see powerpc/tm: Fix crash when forking inside a
transaction). So this is to check that the transaction aborts rather
than your whole kernel crashing.
On 01/12/15 19:11, Anshuman Khandual wrote:
On 12/01/2015 10:38 AM, Rashmica Gupta wrote:
+int test_fork(void)
+{
+ SKIP_IF(!have_htm());
+
+ asm __volatile__(
+ "tbegin.;"
+ "blt 1f; "
+ "li 0, 2;" /* fork syscall */
+ "sc ;"
+ "tend.;"
+ "1: ;"
+ : : : "memory", "r0");
+ /* If we reach here, we've passed. Otherwise we've probably crashed
+ * the kernel */
The transaction inside the parent process will abort. What
is expected inside the child process ? Why should the kernel
crash ?
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