[Skiboot] [PATCH] fast-reboot: fix TLB cleanup after fast reboot

[Nicholas Piggin]

POWER9/10 are missing TLB flushing after fast reboot. Add it back to
cpu_fast_reboot_complete(), which is where fast-reboot code thinks it
should be.

Suggested-by: Cédric Le Goater <clg at fr.ibm.com>
Fixes: 53ef0db6e2 ("asm/head.S: set POWER9 radix HID bit at entry")
Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 core/cpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/cpu.c b/core/cpu.c
index 6f37358a9..016c52375 100644
--- a/core/cpu.c
+++ b/core/cpu.c
@@ -1563,6 +1563,10 @@ void cpu_fast_reboot_complete(void)
 	/* and set HID0:RADIX */
 	if (proc_gen == proc_gen_p9)
 		current_radix_mode = true;
+
+	/* P8 clears TLBs in cleanup_cpu_state() */
+	if (proc_gen >= proc_gen_p9)
+		 cleanup_global_tlb();
 }
 
 static int64_t opal_reinit_cpus(uint64_t flags)
-- 
2.23.0