From: Paul Mackerras Date: Mon, 30 Jan 2017 10:21:52 +0000 (+1100) Subject: KVM: PPC: Book3S HV: Invalidate ERAT on guest entry/exit for POWER9 DD1 X-Git-Tag: v4.11-rc1~36^2~47^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f11f6f79b606fb54bb388d0ea652ed889b2fdf86;p=platform%2Fkernel%2Flinux-exynos.git KVM: PPC: Book3S HV: Invalidate ERAT on guest entry/exit for POWER9 DD1 On POWER9 DD1, we need to invalidate the ERAT (effective to real address translation cache) when changing the PIDR register, which we do as part of guest entry and exit. Signed-off-by: Paul Mackerras Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 46c1c1f..47414a6 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -877,6 +877,9 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) mtspr SPRN_PID, r7 mtspr SPRN_WORT, r8 BEGIN_FTR_SECTION + PPC_INVALIDATE_ERAT +END_FTR_SECTION_IFSET(CPU_FTR_POWER9_DD1) +BEGIN_FTR_SECTION /* POWER8-only registers */ ld r5, VCPU_TCSCR(r4) ld r6, VCPU_ACOP(r4) @@ -1620,6 +1623,9 @@ BEGIN_FTR_SECTION mtspr SPRN_PSSCR, r6 mtspr SPRN_PID, r7 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) +BEGIN_FTR_SECTION + PPC_INVALIDATE_ERAT +END_FTR_SECTION_IFSET(CPU_FTR_POWER9_DD1) /* * POWER7/POWER8 guest -> host partition switch code.