powerpc/tm/tm-poison.c

1 // SPDX-License-Identifier: GPL-2.0-only
10  * vr31 remain 1 as expected until a given timeout (2m). If the issue is
74 		 * The Time Base (TB) is a 64-bit counter register that is  in tm_poison_test()
78 		 * increments to get a 2 minutes timeout. Below we set that  in tm_poison_test()
81 		 * to r6. When r7 (current) - r6 (initial) > 61440000000 we bail  in tm_poison_test()
82 		 * out since for sure we spent already 2 minutes in the loop.  in tm_poison_test()
91 		"       subf    7, 6, 7         ;" // r7 - r6 > 61440000000 ?  in tm_poison_test()
99 		"       beq     1b              ;" // restart if no timeout  in tm_poison_test()
102 		"       bne     2f              ;" // broken :-(  in tm_poison_test()
139 		"       subf    7, 6, 7         ;" // r7 - r6 > 61440000000 ?  in tm_poison_test()
147 		"       beq     1b              ;" // restart if no timeout  in tm_poison_test()
150 		"       bne     2f              ;" // broken :-(  in tm_poison_test()