From 378f96d3cd442d5cb8e2692d8767a4c036070594 Mon Sep 17 00:00:00 2001 From: "Gautham R. Shenoy" Date: Tue, 22 Nov 2016 23:36:40 +0530 Subject: [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online Ensure that PSSCR is set to a safe value corresponding to no state-loss each time a POWER9 CPU comes online. Signed-off-by: Gautham R. Shenoy Acked-By: Michael Neuling Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/cpu_setup_power.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index bdfc1c67eb38..fe35ef2efc28 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -96,6 +96,7 @@ _GLOBAL(__setup_cpu_power9) mtlr r11 beqlr li r0,0 + mtspr SPRN_PSSCR,r0 mtspr SPRN_LPID,r0 mfspr r3,SPRN_LPCR ori r3, r3, LPCR_PECEDH @@ -116,6 +117,7 @@ _GLOBAL(__restore_cpu_power9) mtlr r11 beqlr li r0,0 + mtspr SPRN_PSSCR,r0 mtspr SPRN_LPID,r0 mfspr r3,SPRN_LPCR ori r3, r3, LPCR_PECEDH -- 2.20.1