Messages in this thread Patch in this message | | | From | "Gautham R. Shenoy" <> | Subject | [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online | Date | Tue, 22 Nov 2016 23:36:40 +0530 |
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From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
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 <ego@linux.vnet.ibm.com> --- 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
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