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A fix for a PowerPC bug that was introduced during the 3.14 merge window. 

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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull another kvm fix from Paolo Bonzini:
 "A fix for a PowerPC bug that was introduced during the 3.14 merge
  window"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Book3S HV: Fix register usage when loading/saving VRSAVE
  KVM: PPC: Book3S HV: Remove bogus duplicate code
wifi-calibration
Linus Torvalds 2014-03-18 11:32:08 -07:00
parent 9a15c944f7 e724f080f5
commit 4907cdca72
1 changed files with 2 additions and 69 deletions
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71
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -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)
@ -2203,7 +2136,7 @@ BEGIN_FTR_SECTION
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
#endif
mfspr r6,SPRN_VRSAVE
stw r6,VCPU_VRSAVE(r3)
stw r6,VCPU_VRSAVE(r31)
mtlr r30
mtmsrd r5
isync
@ -2240,7 +2173,7 @@ BEGIN_FTR_SECTION
bl .load_vr_state
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
#endif
lwz r7,VCPU_VRSAVE(r4)
lwz r7,VCPU_VRSAVE(r31)
mtspr SPRN_VRSAVE,r7
mtlr r30
mr r4,r31