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Groups > linux.kernel > #1527799
| From | "Gautham R. Shenoy" <ego@linux.vnet.ibm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online |
| Date | 2016-11-22 19:10 +0100 |
| Message-ID | <sGnG2-2it-9@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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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[PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online "Gautham R. Shenoy" <ego@linux.vnet.ibm.com> - 2016-11-22 19:10 +0100
Re: [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online Michael Ellerman <mpe@ellerman.id.au> - 2016-11-23 00:40 +0100
Re: [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online Michael Neuling <mikey@neuling.org> - 2016-11-23 00:40 +0100
Re: [PATCH] powernv: Clear SPRN_PSSCR when a POWER9 CPU comes online Michael Neuling <mikey@neuling.org> - 2016-11-23 01:40 +0100
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