[Pdbg] [PATCH 02/10] libpdbg/p9chip.c: remove sreset SRR1 workaround

[Nicholas Piggin]

sreset is fixed in DD2 and above, and with recent kernels. pdbg sreset
will crash the host with this workaround in place, so remove it. There
is no way to sanely support DD1.

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 libpdbg/p9chip.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/libpdbg/p9chip.c b/libpdbg/p9chip.c
index 55c0c1d..85416ae 100644
--- a/libpdbg/p9chip.c
+++ b/libpdbg/p9chip.c
@@ -137,11 +137,6 @@ static int p9_thread_sreset(struct thread *thread)
 	if (p9_get_thread_status(thread) != (THREAD_STATUS_QUIESCE | THREAD_STATUS_ACTIVE))
 		return 1;
 
-	/* This will force SRR1[46:47] == 0b00 which means the kernel should
-	 * enter xmon. However it will hide the fact we may have come from a
-	 * powersave state in which register contents were lost. We need a
-	 * kernel side fix for that. */
-	thread_write(thread, P9_DIRECT_CONTROL, PPC_BIT(32 + 8*thread->id));
 	thread_write(thread, P9_DIRECT_CONTROL, PPC_BIT(4 + 8*thread->id));
 
 	return 0;
-- 
2.17.0