[PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online
From: Gautham R. Shenoy <hidden>
Date: 2016-11-22 18:06:54
Also in:
linuxppc-dev
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: "Gautham R. Shenoy" <redacted> 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 <redacted> --- 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 52ff3f0..37ad045 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
--
1.9.4