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Commit a5b0ccb0 authored by Paul Mackerras's avatar Paul Mackerras Committed by Paolo Bonzini
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KVM: PPC: Book3S HV: Remove bogus duplicate code 



Commit 7b490411 ("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: default avatarPaul Mackerras <paulus@samba.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b73117c4

arch/powerpc/kvm/book3s_hv_rmhandlers.S

+0 −67
Original line number Diff line number Diff line
@@ -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)