From a5b0ccb0b5d080c0decb4c9208d9bb6072defa50 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Thu, 13 Mar 2014 20:02:02 +1100 Subject: [PATCH] KVM: PPC: Book3S HV: Remove bogus duplicate code Commit 7b490411c37f ("KVM: PPC: Book3S HV: Add new state for transactional memory") incorrectly added some duplicate code to the guest exit path because I didn't manage to clean up after a rebase correctly. This removes the extraneous material. The presence of this extraneous code causes host crashes whenever a guest is run. Signed-off-by: Paul Mackerras Signed-off-by: Paolo Bonzini --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 67 ------------------------- 1 file changed, 67 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index e66d4ec04d9..781e6bf69af 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1504,73 +1504,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) 1: addi r8,r8,16 .endr - /* Save DEC */ - mfspr r5,SPRN_DEC - mftb r6 - extsw r5,r5 - add r5,r5,r6 - std r5,VCPU_DEC_EXPIRES(r9) - -BEGIN_FTR_SECTION - b 8f -END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) - /* Turn on TM so we can access TFHAR/TFIAR/TEXASR */ - mfmsr r8 - li r0, 1 - rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG - mtmsrd r8 - - /* Save POWER8-specific registers */ - mfspr r5, SPRN_IAMR - mfspr r6, SPRN_PSPB - mfspr r7, SPRN_FSCR - std r5, VCPU_IAMR(r9) - stw r6, VCPU_PSPB(r9) - std r7, VCPU_FSCR(r9) - mfspr r5, SPRN_IC - mfspr r6, SPRN_VTB - mfspr r7, SPRN_TAR - std r5, VCPU_IC(r9) - std r6, VCPU_VTB(r9) - std r7, VCPU_TAR(r9) -#ifdef CONFIG_PPC_TRANSACTIONAL_MEM - mfspr r5, SPRN_TFHAR - mfspr r6, SPRN_TFIAR - mfspr r7, SPRN_TEXASR - std r5, VCPU_TFHAR(r9) - std r6, VCPU_TFIAR(r9) - std r7, VCPU_TEXASR(r9) -#endif - mfspr r8, SPRN_EBBHR - std r8, VCPU_EBBHR(r9) - mfspr r5, SPRN_EBBRR - mfspr r6, SPRN_BESCR - mfspr r7, SPRN_CSIGR - mfspr r8, SPRN_TACR - std r5, VCPU_EBBRR(r9) - std r6, VCPU_BESCR(r9) - std r7, VCPU_CSIGR(r9) - std r8, VCPU_TACR(r9) - mfspr r5, SPRN_TCSCR - mfspr r6, SPRN_ACOP - mfspr r7, SPRN_PID - mfspr r8, SPRN_WORT - std r5, VCPU_TCSCR(r9) - std r6, VCPU_ACOP(r9) - stw r7, VCPU_GUEST_PID(r9) - std r8, VCPU_WORT(r9) -8: - - /* Save and reset AMR and UAMOR before turning on the MMU */ -BEGIN_FTR_SECTION - mfspr r5,SPRN_AMR - mfspr r6,SPRN_UAMOR - std r5,VCPU_AMR(r9) - std r6,VCPU_UAMOR(r9) - li r6,0 - mtspr SPRN_AMR,r6 -END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) - /* Unset guest mode */ li r0, KVM_GUEST_MODE_NONE stb r0, HSTATE_IN_GUEST(r13) -- 2.43.2