Re: [RFC 3/5] powerpc: kvm: drop 32-bit book3s

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Le 12/12/2024 à 13:55, Arnd Bergmann a écrit :
From: Arnd Bergmann <arnd@xxxxxxxx>

Support for KVM on 32-bit Book III-s implementations was added in 2010
and supports PowerMac, CHRP, and embedded platforms using the Freescale G4
(mpc74xx), e300 (mpc83xx) and e600 (mpc86xx) CPUs from 2003 to 2009.

Earlier 603/604/750 machines might work but would be even more limited
by their available memory.

The only likely users of KVM on any of these were the final Apple
PowerMac/PowerBook/iBook G4 models with 2GB of RAM that were at the high
end 20 years ago but are just as obsolete as their x86-32 counterparts.
The code has been orphaned since 2023.

Thanks for doing this, it will help making maintenance and evolution of 32 bits easier.

Should fix https://github.com/linuxppc/issues/issues/334




Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
  MAINTAINERS                               |   2 +-
  arch/powerpc/include/asm/kvm_book3s.h     |  19 ----
  arch/powerpc/include/asm/kvm_book3s_asm.h |  10 --
  arch/powerpc/kvm/Kconfig                  |  22 ----
  arch/powerpc/kvm/Makefile                 |  15 ---
  arch/powerpc/kvm/book3s.c                 |  18 ----
  arch/powerpc/kvm/book3s_emulate.c         |  37 -------
  arch/powerpc/kvm/book3s_interrupts.S      |  11 --
  arch/powerpc/kvm/book3s_mmu_hpte.c        |  12 ---
  arch/powerpc/kvm/book3s_pr.c              | 122 +---------------------
  arch/powerpc/kvm/book3s_rmhandlers.S      | 110 -------------------
  arch/powerpc/kvm/book3s_segment.S         |  30 +-----
  arch/powerpc/kvm/emulate.c                |   2 -
  arch/powerpc/kvm/powerpc.c                |   2 -
  14 files changed, 3 insertions(+), 409 deletions(-)

Some left-over ?

$ git grep KVM_BOOK3S_32_HANDLER
arch/powerpc/include/asm/processor.h:#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
arch/powerpc/include/asm/processor.h:#endif /* CONFIG_KVM_BOOK3S_32_HANDLER */
arch/powerpc/kernel/asm-offsets.c:#ifdef CONFIG_KVM_BOOK3S_32_HANDLER

What about the following in asm-offsets.c, should it still test CONFIG_PPC_BOOK3S_64 ? Is CONFIG_KVM_BOOK3S_PR_POSSIBLE still possible on something else ?

#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
	OFFSET(VCPU_SHAREDBE, kvm_vcpu, arch.shared_big_endian);
#endif

Shouldn't CONFIG_KVM and/or CONFIG_VIRTUALISATION be restricted to CONFIG_PPC64 now ?

What about:

arch/powerpc/kernel/head_book3s_32.S:#include <asm/kvm_book3s_asm.h>
arch/powerpc/kernel/head_book3s_32.S:#include "../kvm/book3s_rmhandlers.S"

There is still arch/powerpc/kvm/book3s_32_mmu.c

Christophe



diff --git a/MAINTAINERS b/MAINTAINERS
index 531561c7a9b7..8d53833645fa 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12642,7 +12642,7 @@ L:	linuxppc-dev@xxxxxxxxxxxxxxxx
  L:	kvm@xxxxxxxxxxxxxxx
  S:	Maintained (Book3S 64-bit HV)
  S:	Odd fixes (Book3S 64-bit PR)
-S:	Orphan (Book3E and 32-bit)
+S:	Orphan (Book3E)
  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git topic/ppc-kvm
  F:	arch/powerpc/include/asm/kvm*
  F:	arch/powerpc/include/uapi/asm/kvm*
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index e1ff291ba891..71532e0e65a6 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -36,21 +36,14 @@ struct kvmppc_sid_map {
  #define SID_MAP_NUM     (1 << SID_MAP_BITS)
  #define SID_MAP_MASK    (SID_MAP_NUM - 1)
-#ifdef CONFIG_PPC_BOOK3S_64
  #define SID_CONTEXTS	1
-#else
-#define SID_CONTEXTS	128
-#define VSID_POOL_SIZE	(SID_CONTEXTS * 16)
-#endif
struct hpte_cache {
  	struct hlist_node list_pte;
  	struct hlist_node list_pte_long;
  	struct hlist_node list_vpte;
  	struct hlist_node list_vpte_long;
-#ifdef CONFIG_PPC_BOOK3S_64
  	struct hlist_node list_vpte_64k;
-#endif
  	struct rcu_head rcu_head;
  	u64 host_vpn;
  	u64 pfn;
@@ -112,14 +105,9 @@ struct kvmppc_vcpu_book3s {
  	u64 hior;
  	u64 msr_mask;
  	u64 vtb;
-#ifdef CONFIG_PPC_BOOK3S_32
-	u32 vsid_pool[VSID_POOL_SIZE];
-	u32 vsid_next;
-#else
  	u64 proto_vsid_first;
  	u64 proto_vsid_max;
  	u64 proto_vsid_next;
-#endif
  	int context_id[SID_CONTEXTS];
bool hior_explicit; /* HIOR is set by ioctl, not PVR */
@@ -128,9 +116,7 @@ struct kvmppc_vcpu_book3s {
  	struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
  	struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
  	struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
-#ifdef CONFIG_PPC_BOOK3S_64
  	struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
-#endif
  	int hpte_cache_count;
  	spinlock_t mmu_lock;
  };
@@ -391,12 +377,7 @@ static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
/* Also add subarch specific defines */ -#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-#include <asm/kvm_book3s_32.h>
-#endif
-#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
  #include <asm/kvm_book3s_64.h>
-#endif
static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
  {
diff --git a/arch/powerpc/include/asm/kvm_book3s_asm.h b/arch/powerpc/include/asm/kvm_book3s_asm.h
index a36797938620..98174363946e 100644
--- a/arch/powerpc/include/asm/kvm_book3s_asm.h
+++ b/arch/powerpc/include/asm/kvm_book3s_asm.h
@@ -113,11 +113,9 @@ struct kvmppc_host_state {
  	u64 dec_expires;
  	struct kvm_split_mode *kvm_split_mode;
  #endif
-#ifdef CONFIG_PPC_BOOK3S_64
  	u64 cfar;
  	u64 ppr;
  	u64 host_fscr;
-#endif
  };
struct kvmppc_book3s_shadow_vcpu {
@@ -134,20 +132,12 @@ struct kvmppc_book3s_shadow_vcpu {
  	u32 fault_dsisr;
  	u32 last_inst;
-#ifdef CONFIG_PPC_BOOK3S_32
-	u32     sr[16];			/* Guest SRs */
-
-	struct kvmppc_host_state hstate;
-#endif
-
-#ifdef CONFIG_PPC_BOOK3S_64
  	u8 slb_max;			/* highest used guest slb entry */
  	struct  {
  		u64     esid;
  		u64     vsid;
  	} slb[64];			/* guest SLB */
  	u64 shadow_fscr;
-#endif
  };
#endif /*__ASSEMBLY__ */
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index e2230ea512cf..d0a6e2f6df81 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -27,11 +27,6 @@ config KVM
  config KVM_BOOK3S_HANDLER
  	bool
-config KVM_BOOK3S_32_HANDLER
-	bool
-	select KVM_BOOK3S_HANDLER
-	select KVM_MMIO
-
  config KVM_BOOK3S_64_HANDLER
  	bool
  	select KVM_BOOK3S_HANDLER
@@ -44,23 +39,6 @@ config KVM_BOOK3S_PR_POSSIBLE
  config KVM_BOOK3S_HV_POSSIBLE
  	bool
-config KVM_BOOK3S_32
-	tristate "KVM support for PowerPC book3s_32 processors"
-	depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
-	depends on !CONTEXT_TRACKING_USER
-	select KVM
-	select KVM_BOOK3S_32_HANDLER
-	select KVM_BOOK3S_PR_POSSIBLE
-	select PPC_FPU
-	help
-	  Support running unmodified book3s_32 guest kernels
-	  in virtual machines on book3s_32 host processors.
-
-	  This module provides access to the hardware capabilities through
-	  a character device node named /dev/kvm.
-
-	  If unsure, say N.
-
  config KVM_BOOK3S_64
  	tristate "KVM support for PowerPC book3s_64 processors"
  	depends on PPC_BOOK3S_64
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index 294f27439f7f..059b4c153d97 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -95,27 +95,12 @@ kvm-book3s_64-module-objs := \
kvm-objs-$(CONFIG_KVM_BOOK3S_64) := $(kvm-book3s_64-module-objs) -kvm-book3s_32-objs := \
-	$(common-objs-y) \
-	emulate.o \
-	fpu.o \
-	book3s_paired_singles.o \
-	book3s.o \
-	book3s_pr.o \
-	book3s_emulate.o \
-	book3s_interrupts.o \
-	book3s_mmu_hpte.o \
-	book3s_32_mmu_host.o \
-	book3s_32_mmu.o
-kvm-objs-$(CONFIG_KVM_BOOK3S_32) := $(kvm-book3s_32-objs)
-
  kvm-objs-$(CONFIG_KVM_MPIC) += mpic.o
kvm-y += $(kvm-objs-m) $(kvm-objs-y) obj-$(CONFIG_KVM_E500MC) += kvm.o
  obj-$(CONFIG_KVM_BOOK3S_64) += kvm.o
-obj-$(CONFIG_KVM_BOOK3S_32) += kvm.o
obj-$(CONFIG_KVM_BOOK3S_64_PR) += kvm-pr.o
  obj-$(CONFIG_KVM_BOOK3S_64_HV) += kvm-hv.o
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index d79c5d1098c0..75f4d397114f 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -898,12 +898,9 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
int kvmppc_core_init_vm(struct kvm *kvm)
  {
-
-#ifdef CONFIG_PPC64
  	INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
  	INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
  	mutex_init(&kvm->arch.rtas_token_lock);
-#endif
return kvm->arch.kvm_ops->init_vm(kvm);
  }
@@ -912,10 +909,8 @@ void kvmppc_core_destroy_vm(struct kvm *kvm)
  {
  	kvm->arch.kvm_ops->destroy_vm(kvm);
-#ifdef CONFIG_PPC64
  	kvmppc_rtas_tokens_free(kvm);
  	WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
-#endif
#ifdef CONFIG_KVM_XICS
  	/*
@@ -1069,10 +1064,6 @@ static int kvmppc_book3s_init(void)
  	r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
  	if (r)
  		return r;
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-	r = kvmppc_book3s_init_pr();
-#endif
-
  #ifdef CONFIG_KVM_XICS
  #ifdef CONFIG_KVM_XIVE
  	if (xics_on_xive()) {
@@ -1089,17 +1080,8 @@ static int kvmppc_book3s_init(void)
static void kvmppc_book3s_exit(void)
  {
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-	kvmppc_book3s_exit_pr();
-#endif
  	kvm_exit();
  }
module_init(kvmppc_book3s_init);
  module_exit(kvmppc_book3s_exit);
-
-/* On 32bit this is our one and only kernel module */
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-MODULE_ALIAS_MISCDEV(KVM_MINOR);
-MODULE_ALIAS("devname:kvm");
-#endif
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index de126d153328..30a117d6e70c 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -351,7 +351,6 @@ int kvmppc_core_emulate_op_pr(struct kvm_vcpu *vcpu,
  			vcpu->arch.mmu.tlbie(vcpu, addr, large);
  			break;
  		}
-#ifdef CONFIG_PPC_BOOK3S_64
  		case OP_31_XOP_FAKE_SC1:
  		{
  			/* SC 1 papr hypercalls */
@@ -378,7 +377,6 @@ int kvmppc_core_emulate_op_pr(struct kvm_vcpu *vcpu,
  			emulated = EMULATE_EXIT_USER;
  			break;
  		}
-#endif
  		case OP_31_XOP_EIOIO:
  			break;
  		case OP_31_XOP_SLBMTE:
@@ -762,7 +760,6 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
  	case SPRN_GQR7:
  		to_book3s(vcpu)->gqr[sprn - SPRN_GQR0] = spr_val;
  		break;
-#ifdef CONFIG_PPC_BOOK3S_64
  	case SPRN_FSCR:
  		kvmppc_set_fscr(vcpu, spr_val);
  		break;
@@ -810,7 +807,6 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
  		tm_disable();
break;
-#endif
  #endif
  	case SPRN_ICTC:
  	case SPRN_THRM1:
@@ -829,7 +825,6 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
  	case SPRN_WPAR_GEKKO:
  	case SPRN_MSSSR0:
  	case SPRN_DABR:
-#ifdef CONFIG_PPC_BOOK3S_64
  	case SPRN_MMCRS:
  	case SPRN_MMCRA:
  	case SPRN_MMCR0:
@@ -839,7 +834,6 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
  	case SPRN_UAMOR:
  	case SPRN_IAMR:
  	case SPRN_AMR:
-#endif
  		break;
  unprivileged:
  	default:
@@ -943,7 +937,6 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
  	case SPRN_GQR7:
  		*spr_val = to_book3s(vcpu)->gqr[sprn - SPRN_GQR0];
  		break;
-#ifdef CONFIG_PPC_BOOK3S_64
  	case SPRN_FSCR:
  		*spr_val = vcpu->arch.fscr;
  		break;
@@ -978,7 +971,6 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
  			*spr_val = mfspr(SPRN_TFIAR);
  		tm_disable();
  		break;
-#endif
  #endif
  	case SPRN_THRM1:
  	case SPRN_THRM2:
@@ -995,7 +987,6 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
  	case SPRN_WPAR_GEKKO:
  	case SPRN_MSSSR0:
  	case SPRN_DABR:
-#ifdef CONFIG_PPC_BOOK3S_64
  	case SPRN_MMCRS:
  	case SPRN_MMCRA:
  	case SPRN_MMCR0:
@@ -1006,7 +997,6 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
  	case SPRN_UAMOR:
  	case SPRN_IAMR:
  	case SPRN_AMR:
-#endif
  		*spr_val = 0;
  		break;
  	default:
@@ -1038,35 +1028,8 @@ u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst)
ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst)
  {
-#ifdef CONFIG_PPC_BOOK3S_64
  	/*
  	 * Linux's fix_alignment() assumes that DAR is valid, so can we
  	 */
  	return vcpu->arch.fault_dar;
-#else
-	ulong dar = 0;
-	ulong ra = get_ra(inst);
-	ulong rb = get_rb(inst);
-
-	switch (get_op(inst)) {
-	case OP_LFS:
-	case OP_LFD:
-	case OP_STFD:
-	case OP_STFS:
-		if (ra)
-			dar = kvmppc_get_gpr(vcpu, ra);
-		dar += (s32)((s16)inst);
-		break;
-	case 31:
-		if (ra)
-			dar = kvmppc_get_gpr(vcpu, ra);
-		dar += kvmppc_get_gpr(vcpu, rb);
-		break;
-	default:
-		printk(KERN_INFO "KVM: Unaligned instruction 0x%x\n", inst);
-		break;
-	}
-
-	return dar;
-#endif
  }
diff --git a/arch/powerpc/kvm/book3s_interrupts.S b/arch/powerpc/kvm/book3s_interrupts.S
index f4bec2fc51aa..c5b88d5451b7 100644
--- a/arch/powerpc/kvm/book3s_interrupts.S
+++ b/arch/powerpc/kvm/book3s_interrupts.S
@@ -14,7 +14,6 @@
  #include <asm/exception-64s.h>
  #include <asm/asm-compat.h>
-#if defined(CONFIG_PPC_BOOK3S_64)
  #ifdef CONFIG_PPC64_ELF_ABI_V2
  #define FUNC(name) 		name
  #else
@@ -22,12 +21,6 @@
  #endif
  #define GET_SHADOW_VCPU(reg)    addi	reg, r13, PACA_SVCPU
-#elif defined(CONFIG_PPC_BOOK3S_32)
-#define FUNC(name)		name
-#define GET_SHADOW_VCPU(reg)	lwz     reg, (THREAD + THREAD_KVM_SVCPU)(r2)
-
-#endif /* CONFIG_PPC_BOOK3S_64 */
-
  #define VCPU_LOAD_NVGPRS(vcpu) \
  	PPC_LL	r14, VCPU_GPR(R14)(vcpu); \
  	PPC_LL	r15, VCPU_GPR(R15)(vcpu); \
@@ -89,7 +82,6 @@ kvm_start_lightweight:
  	nop
  	REST_GPR(3, r1)
-#ifdef CONFIG_PPC_BOOK3S_64
  	/* Get the dcbz32 flag */
  	PPC_LL	r0, VCPU_HFLAGS(r3)
  	rldicl	r0, r0, 0, 63		/* r3 &= 1 */
@@ -118,7 +110,6 @@ sprg3_little_endian:
after_sprg3_load:
  	mtspr	SPRN_SPRG3, r4
-#endif /* CONFIG_PPC_BOOK3S_64 */
PPC_LL r4, VCPU_SHADOW_MSR(r3) /* get shadow_msr */ @@ -157,14 +148,12 @@ after_sprg3_load:
  	bl	FUNC(kvmppc_copy_from_svcpu)
  	nop
-#ifdef CONFIG_PPC_BOOK3S_64
  	/*
  	 * Reload kernel SPRG3 value.
  	 * No need to save guest value as usermode can't modify SPRG3.
  	 */
  	ld	r3, PACA_SPRG_VDSO(r13)
  	mtspr	SPRN_SPRG_VDSO_WRITE, r3
-#endif /* CONFIG_PPC_BOOK3S_64 */
/* R7 = vcpu */
  	PPC_LL	r7, GPR3(r1)
diff --git a/arch/powerpc/kvm/book3s_mmu_hpte.c b/arch/powerpc/kvm/book3s_mmu_hpte.c
index d904e13e069b..91614ca9f969 100644
--- a/arch/powerpc/kvm/book3s_mmu_hpte.c
+++ b/arch/powerpc/kvm/book3s_mmu_hpte.c
@@ -45,13 +45,11 @@ static inline u64 kvmppc_mmu_hash_vpte_long(u64 vpage)
  		       HPTEG_HASH_BITS_VPTE_LONG);
  }
-#ifdef CONFIG_PPC_BOOK3S_64
  static inline u64 kvmppc_mmu_hash_vpte_64k(u64 vpage)
  {
  	return hash_64((vpage & 0xffffffff0ULL) >> 4,
  		       HPTEG_HASH_BITS_VPTE_64K);
  }
-#endif
void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
  {
@@ -80,12 +78,10 @@ void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
  	hlist_add_head_rcu(&pte->list_vpte_long,
  			   &vcpu3s->hpte_hash_vpte_long[index]);
-#ifdef CONFIG_PPC_BOOK3S_64
  	/* Add to vPTE_64k list */
  	index = kvmppc_mmu_hash_vpte_64k(pte->pte.vpage);
  	hlist_add_head_rcu(&pte->list_vpte_64k,
  			   &vcpu3s->hpte_hash_vpte_64k[index]);
-#endif
vcpu3s->hpte_cache_count++; @@ -113,9 +109,7 @@ static void invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
  	hlist_del_init_rcu(&pte->list_pte_long);
  	hlist_del_init_rcu(&pte->list_vpte);
  	hlist_del_init_rcu(&pte->list_vpte_long);
-#ifdef CONFIG_PPC_BOOK3S_64
  	hlist_del_init_rcu(&pte->list_vpte_64k);
-#endif
  	vcpu3s->hpte_cache_count--;
spin_unlock(&vcpu3s->mmu_lock);
@@ -222,7 +216,6 @@ static void kvmppc_mmu_pte_vflush_short(struct kvm_vcpu *vcpu, u64 guest_vp)
  	rcu_read_unlock();
  }
-#ifdef CONFIG_PPC_BOOK3S_64
  /* Flush with mask 0xffffffff0 */
  static void kvmppc_mmu_pte_vflush_64k(struct kvm_vcpu *vcpu, u64 guest_vp)
  {
@@ -243,7 +236,6 @@ static void kvmppc_mmu_pte_vflush_64k(struct kvm_vcpu *vcpu, u64 guest_vp)
rcu_read_unlock();
  }
-#endif
/* Flush with mask 0xffffff000 */
  static void kvmppc_mmu_pte_vflush_long(struct kvm_vcpu *vcpu, u64 guest_vp)
@@ -275,11 +267,9 @@ void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 guest_vp, u64 vp_mask)
  	case 0xfffffffffULL:
  		kvmppc_mmu_pte_vflush_short(vcpu, guest_vp);
  		break;
-#ifdef CONFIG_PPC_BOOK3S_64
  	case 0xffffffff0ULL:
  		kvmppc_mmu_pte_vflush_64k(vcpu, guest_vp);
  		break;
-#endif
  	case 0xffffff000ULL:
  		kvmppc_mmu_pte_vflush_long(vcpu, guest_vp);
  		break;
@@ -355,10 +345,8 @@ int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu)
  				  ARRAY_SIZE(vcpu3s->hpte_hash_vpte));
  	kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_vpte_long,
  				  ARRAY_SIZE(vcpu3s->hpte_hash_vpte_long));
-#ifdef CONFIG_PPC_BOOK3S_64
  	kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_vpte_64k,
  				  ARRAY_SIZE(vcpu3s->hpte_hash_vpte_64k));
-#endif
spin_lock_init(&vcpu3s->mmu_lock); diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 83bcdc80ce51..36785a02b9da 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -52,17 +52,7 @@
static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
  			     ulong msr);
-#ifdef CONFIG_PPC_BOOK3S_64
  static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac);
-#endif
-
-/* Some compatibility defines */
-#ifdef CONFIG_PPC_BOOK3S_32
-#define MSR_USER32 MSR_USER
-#define MSR_USER64 MSR_USER
-#define HW_PAGE_SIZE PAGE_SIZE
-#define HPTE_R_M   _PAGE_COHERENT
-#endif
static bool kvmppc_is_split_real(struct kvm_vcpu *vcpu)
  {
@@ -115,13 +105,11 @@ static void kvmppc_inject_interrupt_pr(struct kvm_vcpu *vcpu, int vec, u64 srr1_
  	new_msr = vcpu->arch.intr_msr;
  	new_pc = to_book3s(vcpu)->hior + vec;
-#ifdef CONFIG_PPC_BOOK3S_64
  	/* If transactional, change to suspend mode on IRQ delivery */
  	if (MSR_TM_TRANSACTIONAL(msr))
  		new_msr |= MSR_TS_S;
  	else
  		new_msr |= msr & MSR_TS_MASK;
-#endif
kvmppc_set_srr0(vcpu, pc);
  	kvmppc_set_srr1(vcpu, (msr & SRR1_MSR_BITS) | srr1_flags);
@@ -131,7 +119,6 @@ static void kvmppc_inject_interrupt_pr(struct kvm_vcpu *vcpu, int vec, u64 srr1_
static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
  {
-#ifdef CONFIG_PPC_BOOK3S_64
  	struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
  	memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb));
  	svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max;
@@ -145,12 +132,8 @@ static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
  		if (cpu_has_feature(CPU_FTR_ARCH_300) && (current->thread.fscr & FSCR_SCV))
  			mtspr(SPRN_FSCR, mfspr(SPRN_FSCR) & ~FSCR_SCV);
  	}
-#endif
vcpu->cpu = smp_processor_id();
-#ifdef CONFIG_PPC_BOOK3S_32
-	current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu;
-#endif
if (kvmppc_is_split_real(vcpu))
  		kvmppc_fixup_split_real(vcpu);
@@ -160,7 +143,6 @@ static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
  {
-#ifdef CONFIG_PPC_BOOK3S_64
  	struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
  	if (svcpu->in_use) {
  		kvmppc_copy_from_svcpu(vcpu);
@@ -176,7 +158,6 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
  		if (cpu_has_feature(CPU_FTR_ARCH_300) && (current->thread.fscr & FSCR_SCV))
  			mtspr(SPRN_FSCR, mfspr(SPRN_FSCR) | FSCR_SCV);
  	}
-#endif
if (kvmppc_is_split_real(vcpu))
  		kvmppc_unfixup_split_real(vcpu);
@@ -212,9 +193,7 @@ void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu)
  	svcpu->ctr = vcpu->arch.regs.ctr;
  	svcpu->lr  = vcpu->arch.regs.link;
  	svcpu->pc  = vcpu->arch.regs.nip;
-#ifdef CONFIG_PPC_BOOK3S_64
  	svcpu->shadow_fscr = vcpu->arch.shadow_fscr;
-#endif
  	/*
  	 * Now also save the current time base value. We use this
  	 * to find the guest purr and spurr value.
@@ -245,9 +224,7 @@ static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu)
  	/* External providers the guest reserved */
  	smsr |= (guest_msr & vcpu->arch.guest_owned_ext);
  	/* 64-bit Process MSR values */
-#ifdef CONFIG_PPC_BOOK3S_64
  	smsr |= MSR_HV;
-#endif
  #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
  	/*
  	 * in guest privileged state, we want to fail all TM transactions.
@@ -298,9 +275,7 @@ void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu)
  	vcpu->arch.fault_dar   = svcpu->fault_dar;
  	vcpu->arch.fault_dsisr = svcpu->fault_dsisr;
  	vcpu->arch.last_inst   = svcpu->last_inst;
-#ifdef CONFIG_PPC_BOOK3S_64
  	vcpu->arch.shadow_fscr = svcpu->shadow_fscr;
-#endif
  	/*
  	 * Update purr and spurr using time base on exit.
  	 */
@@ -553,7 +528,6 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB;
  	vcpu->arch.pvr = pvr;
-#ifdef CONFIG_PPC_BOOK3S_64
  	if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
  		kvmppc_mmu_book3s_64_init(vcpu);
  		if (!to_book3s(vcpu)->hior_explicit)
@@ -561,7 +535,6 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
  		to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
  		vcpu->arch.cpu_type = KVM_CPU_3S_64;
  	} else
-#endif
  	{
  		kvmppc_mmu_book3s_32_init(vcpu);
  		if (!to_book3s(vcpu)->hior_explicit)
@@ -605,11 +578,6 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
  		break;
  	}
-#ifdef CONFIG_PPC_BOOK3S_32
-	/* 32 bit Book3S always has 32 byte dcbz */
-	vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
-#endif
-
  	/* On some CPUs we can execute paired single operations natively */
  	asm ( "mfpvr %0" : "=r"(host_pvr));
  	switch (host_pvr) {
@@ -839,7 +807,6 @@ void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
  /* Give up facility (TAR / EBB / DSCR) */
  void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac)
  {
-#ifdef CONFIG_PPC_BOOK3S_64
  	if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) {
  		/* Facility not available to the guest, ignore giveup request*/
  		return;
@@ -852,7 +819,6 @@ void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac)
  		vcpu->arch.shadow_fscr &= ~FSCR_TAR;
  		break;
  	}
-#endif
  }
/* Handle external providers (FPU, Altivec, VSX) */
@@ -954,8 +920,6 @@ static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
  	current->thread.regs->msr |= lost_ext;
  }
-#ifdef CONFIG_PPC_BOOK3S_64
-
  void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac)
  {
  	/* Inject the Interrupt Cause field and trigger a guest interrupt */
@@ -1050,7 +1014,6 @@ void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr)
vcpu->arch.fscr = fscr;
  }
-#endif
static void kvmppc_setup_debug(struct kvm_vcpu *vcpu)
  {
@@ -1157,24 +1120,6 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
  		if (kvmppc_is_split_real(vcpu))
  			kvmppc_fixup_split_real(vcpu);
-#ifdef CONFIG_PPC_BOOK3S_32
-		/* We set segments as unused segments when invalidating them. So
-		 * treat the respective fault as segment fault. */
-		{
-			struct kvmppc_book3s_shadow_vcpu *svcpu;
-			u32 sr;
-
-			svcpu = svcpu_get(vcpu);
-			sr = svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT];
-			svcpu_put(svcpu);
-			if (sr == SR_INVALID) {
-				kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
-				r = RESUME_GUEST;
-				break;
-			}
-		}
-#endif
-
  		/* only care about PTEG not found errors, but leave NX alone */
  		if (shadow_srr1 & 0x40000000) {
  			int idx = srcu_read_lock(&vcpu->kvm->srcu);
@@ -1203,24 +1148,6 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
  		u32 fault_dsisr = vcpu->arch.fault_dsisr;
  		vcpu->stat.pf_storage++;
-#ifdef CONFIG_PPC_BOOK3S_32
-		/* We set segments as unused segments when invalidating them. So
-		 * treat the respective fault as segment fault. */
-		{
-			struct kvmppc_book3s_shadow_vcpu *svcpu;
-			u32 sr;
-
-			svcpu = svcpu_get(vcpu);
-			sr = svcpu->sr[dar >> SID_SHIFT];
-			svcpu_put(svcpu);
-			if (sr == SR_INVALID) {
-				kvmppc_mmu_map_segment(vcpu, dar);
-				r = RESUME_GUEST;
-				break;
-			}
-		}
-#endif
-
  		/*
  		 * We need to handle missing shadow PTEs, and
  		 * protection faults due to us mapping a page read-only
@@ -1297,12 +1224,10 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
  			ulong cmd = kvmppc_get_gpr(vcpu, 3);
  			int i;
-#ifdef CONFIG_PPC_BOOK3S_64
  			if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) {
  				r = RESUME_GUEST;
  				break;
  			}
-#endif
run->papr_hcall.nr = cmd;
  			for (i = 0; i < 9; ++i) {
@@ -1395,11 +1320,9 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
  		r = RESUME_GUEST;
  		break;
  	}
-#ifdef CONFIG_PPC_BOOK3S_64
  	case BOOK3S_INTERRUPT_FAC_UNAVAIL:
  		r = kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56);
  		break;
-#endif
  	case BOOK3S_INTERRUPT_MACHINE_CHECK:
  		kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
  		r = RESUME_GUEST;
@@ -1488,7 +1411,6 @@ static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu,
  	kvmppc_set_pvr_pr(vcpu, sregs->pvr);
vcpu3s->sdr1 = sregs->u.s.sdr1;
-#ifdef CONFIG_PPC_BOOK3S_64
  	if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
  		/* Flush all SLB entries */
  		vcpu->arch.mmu.slbmte(vcpu, 0, 0);
@@ -1501,9 +1423,7 @@ static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu,
  			if (rb & SLB_ESID_V)
  				vcpu->arch.mmu.slbmte(vcpu, rs, rb);
  		}
-	} else
-#endif
-	{
+	} else {
  		for (i = 0; i < 16; i++) {
  			vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]);
  		}
@@ -1737,18 +1657,10 @@ static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
  		goto out;
  	vcpu->arch.book3s = vcpu_book3s;
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-	vcpu->arch.shadow_vcpu =
-		kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL);
-	if (!vcpu->arch.shadow_vcpu)
-		goto free_vcpu3s;
-#endif
-
  	p = __get_free_page(GFP_KERNEL|__GFP_ZERO);
  	if (!p)
  		goto free_shadow_vcpu;
  	vcpu->arch.shared = (void *)p;
-#ifdef CONFIG_PPC_BOOK3S_64
  	/* Always start the shared struct in native endian mode */
  #ifdef __BIG_ENDIAN__
          vcpu->arch.shared_big_endian = true;
@@ -1765,11 +1677,6 @@ static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
  	if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
  		vcpu->arch.pvr = mfspr(SPRN_PVR);
  	vcpu->arch.intr_msr = MSR_SF;
-#else
-	/* default to book3s_32 (750) */
-	vcpu->arch.pvr = 0x84202;
-	vcpu->arch.intr_msr = 0;
-#endif
  	kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr);
  	vcpu->arch.slb_nr = 64;
@@ -1784,10 +1691,6 @@ static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
  free_shared_page:
  	free_page((unsigned long)vcpu->arch.shared);
  free_shadow_vcpu:
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-	kfree(vcpu->arch.shadow_vcpu);
-free_vcpu3s:
-#endif
  	vfree(vcpu_book3s);
  out:
  	return err;
@@ -1799,9 +1702,6 @@ static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
kvmppc_mmu_destroy_pr(vcpu);
  	free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
-#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
-	kfree(vcpu->arch.shadow_vcpu);
-#endif
  	vfree(vcpu_book3s);
  }
@@ -1921,7 +1821,6 @@ static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *slot)
  	return;
  }
-#ifdef CONFIG_PPC64
  static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
  					 struct kvm_ppc_smmu_info *info)
  {
@@ -1978,16 +1877,6 @@ static int kvm_configure_mmu_pr(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg)
  	return 0;
  }
-#else
-static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
-					 struct kvm_ppc_smmu_info *info)
-{
-	/* We should not get called */
-	BUG();
-	return 0;
-}
-#endif /* CONFIG_PPC64 */
-
  static unsigned int kvm_global_user_count = 0;
  static DEFINE_SPINLOCK(kvm_global_user_count_lock);
@@ -1995,10 +1884,8 @@ static int kvmppc_core_init_vm_pr(struct kvm *kvm)
  {
  	mutex_init(&kvm->arch.hpt_mutex);
-#ifdef CONFIG_PPC_BOOK3S_64
  	/* Start out with the default set of hcalls enabled */
  	kvmppc_pr_init_default_hcalls(kvm);
-#endif
if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
  		spin_lock(&kvm_global_user_count_lock);
@@ -2011,9 +1898,7 @@ static int kvmppc_core_init_vm_pr(struct kvm *kvm)
static void kvmppc_core_destroy_vm_pr(struct kvm *kvm)
  {
-#ifdef CONFIG_PPC64
  	WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
-#endif
if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
  		spin_lock(&kvm_global_user_count_lock);
@@ -2072,10 +1957,8 @@ static struct kvmppc_ops kvm_ops_pr = {
  	.emulate_mfspr = kvmppc_core_emulate_mfspr_pr,
  	.fast_vcpu_kick = kvm_vcpu_kick,
  	.arch_vm_ioctl  = kvm_arch_vm_ioctl_pr,
-#ifdef CONFIG_PPC_BOOK3S_64
  	.hcall_implemented = kvmppc_hcall_impl_pr,
  	.configure_mmu = kvm_configure_mmu_pr,
-#endif
  	.giveup_ext = kvmppc_giveup_ext,
  };
@@ -2104,8 +1987,6 @@ void kvmppc_book3s_exit_pr(void)
  /*
   * We only support separate modules for book3s 64
   */
-#ifdef CONFIG_PPC_BOOK3S_64
-
  module_init(kvmppc_book3s_init_pr);
  module_exit(kvmppc_book3s_exit_pr);
@@ -2113,4 +1994,3 @@ MODULE_DESCRIPTION("KVM on Book3S without using hypervisor mode");
  MODULE_LICENSE("GPL");
  MODULE_ALIAS_MISCDEV(KVM_MINOR);
  MODULE_ALIAS("devname:kvm");
-#endif
diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S
index 0a557ffca9fe..ef01e8ed2a97 100644
--- a/arch/powerpc/kvm/book3s_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_rmhandlers.S
@@ -14,9 +14,7 @@
  #include <asm/asm-offsets.h>
  #include <asm/asm-compat.h>
-#ifdef CONFIG_PPC_BOOK3S_64
  #include <asm/exception-64s.h>
-#endif
/*****************************************************************************
   *                                                                           *
@@ -24,120 +22,12 @@
   *                                                                           *
   ****************************************************************************/
-#if defined(CONFIG_PPC_BOOK3S_64)
-
  #ifdef CONFIG_PPC64_ELF_ABI_V2
  #define FUNC(name) 		name
  #else
  #define FUNC(name) 		GLUE(.,name)
  #endif
-#elif defined(CONFIG_PPC_BOOK3S_32)
-
-#define FUNC(name)		name
-
-#define RFI_TO_KERNEL	rfi
-#define RFI_TO_GUEST	rfi
-
-.macro INTERRUPT_TRAMPOLINE intno
-
-.global kvmppc_trampoline_\intno
-kvmppc_trampoline_\intno:
-
-	mtspr	SPRN_SPRG_SCRATCH0, r13		/* Save r13 */
-
-	/*
-	 * First thing to do is to find out if we're coming
-	 * from a KVM guest or a Linux process.
-	 *
-	 * To distinguish, we check a magic byte in the PACA/current
-	 */
-	mfspr	r13, SPRN_SPRG_THREAD
-	lwz	r13, THREAD_KVM_SVCPU(r13)
-	/* PPC32 can have a NULL pointer - let's check for that */
-	mtspr   SPRN_SPRG_SCRATCH1, r12		/* Save r12 */
-	mfcr	r12
-	cmpwi	r13, 0
-	bne	1f
-2:	mtcr	r12
-	mfspr	r12, SPRN_SPRG_SCRATCH1
-	mfspr	r13, SPRN_SPRG_SCRATCH0		/* r13 = original r13 */
-	b	kvmppc_resume_\intno		/* Get back original handler */
-
-1:	tophys(r13, r13)
-	stw	r12, HSTATE_SCRATCH1(r13)
-	mfspr	r12, SPRN_SPRG_SCRATCH1
-	stw	r12, HSTATE_SCRATCH0(r13)
-	lbz	r12, HSTATE_IN_GUEST(r13)
-	cmpwi	r12, KVM_GUEST_MODE_NONE
-	bne	..kvmppc_handler_hasmagic_\intno
-	/* No KVM guest? Then jump back to the Linux handler! */
-	lwz	r12, HSTATE_SCRATCH1(r13)
-	b	2b
-
-	/* Now we know we're handling a KVM guest */
-..kvmppc_handler_hasmagic_\intno:
-
-	/* Should we just skip the faulting instruction? */
-	cmpwi	r12, KVM_GUEST_MODE_SKIP
-	beq	kvmppc_handler_skip_ins
-
-	/* Let's store which interrupt we're handling */
-	li	r12, \intno
-
-	/* Jump into the SLB exit code that goes to the highmem handler */
-	b	kvmppc_handler_trampoline_exit
-
-.endm
-
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_SYSTEM_RESET
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_MACHINE_CHECK
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_DATA_STORAGE
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_INST_STORAGE
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_EXTERNAL
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_ALIGNMENT
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_PROGRAM
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_FP_UNAVAIL
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_DECREMENTER
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_SYSCALL
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_TRACE
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_PERFMON
-INTERRUPT_TRAMPOLINE	BOOK3S_INTERRUPT_ALTIVEC
-
-/*
- * Bring us back to the faulting code, but skip the
- * faulting instruction.
- *
- * This is a generic exit path from the interrupt
- * trampolines above.
- *
- * Input Registers:
- *
- * R12            = free
- * R13            = Shadow VCPU (PACA)
- * HSTATE.SCRATCH0 = guest R12
- * HSTATE.SCRATCH1 = guest CR
- * SPRG_SCRATCH0  = guest R13
- *
- */
-kvmppc_handler_skip_ins:
-
-	/* Patch the IP to the next instruction */
-	/* Note that prefixed instructions are disabled in PR KVM for now */
-	mfsrr0	r12
-	addi	r12, r12, 4
-	mtsrr0	r12
-
-	/* Clean up all state */
-	lwz	r12, HSTATE_SCRATCH1(r13)
-	mtcr	r12
-	PPC_LL	r12, HSTATE_SCRATCH0(r13)
-	GET_SCRATCH0(r13)
-
-	/* And get back into the code */
-	RFI_TO_KERNEL
-#endif
-
  /*
   * Call kvmppc_handler_trampoline_enter in real mode
   *
diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S
index 202046a83fc1..eec41008d815 100644
--- a/arch/powerpc/kvm/book3s_segment.S
+++ b/arch/powerpc/kvm/book3s_segment.S
@@ -11,31 +11,16 @@
  #include <asm/asm-compat.h>
  #include <asm/feature-fixups.h>
-#if defined(CONFIG_PPC_BOOK3S_64)
-
  #define GET_SHADOW_VCPU(reg)    \
  	mr	reg, r13
-#elif defined(CONFIG_PPC_BOOK3S_32)
-
-#define GET_SHADOW_VCPU(reg)    			\
-	tophys(reg, r2);       			\
-	lwz     reg, (THREAD + THREAD_KVM_SVCPU)(reg);	\
-	tophys(reg, reg)
-
-#endif
-
  /* Disable for nested KVM */
  #define USE_QUICK_LAST_INST
/* Get helper functions for subarch specific functionality */ -#if defined(CONFIG_PPC_BOOK3S_64)
  #include "book3s_64_slb.S"
-#elif defined(CONFIG_PPC_BOOK3S_32)
-#include "book3s_32_sr.S"
-#endif
/******************************************************************************
   *                                                                            *
@@ -81,7 +66,6 @@ kvmppc_handler_trampoline_enter:
  	/* Switch to guest segment. This is subarch specific. */
  	LOAD_GUEST_SEGMENTS
-#ifdef CONFIG_PPC_BOOK3S_64
  BEGIN_FTR_SECTION
  	/* Save host FSCR */
  	mfspr	r8, SPRN_FSCR
@@ -108,8 +92,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
  	mtspr   SPRN_HID5,r0
  no_dcbz32_on:
-#endif /* CONFIG_PPC_BOOK3S_64 */
-
  	/* Enter guest */
PPC_LL r8, SVCPU_CTR(r3)
@@ -170,13 +152,11 @@ kvmppc_interrupt_pr:
  	 * HSTATE.SCRATCH0 = guest R12
  	 * HSTATE.SCRATCH2 = guest R9
  	 */
-#ifdef CONFIG_PPC64
  	/* Match 32-bit entry */
  	ld	r9,HSTATE_SCRATCH2(r13)
  	rotldi	r12, r12, 32		  /* Flip R12 halves for stw */
  	stw	r12, HSTATE_SCRATCH1(r13) /* CR is now in the low half */
  	srdi	r12, r12, 32		  /* shift trap into low half */
-#endif
.global kvmppc_handler_trampoline_exit
  kvmppc_handler_trampoline_exit:
@@ -209,7 +189,6 @@ kvmppc_handler_trampoline_exit:
  	PPC_LL	r2, HSTATE_HOST_R2(r13)
/* Save guest PC and MSR */
-#ifdef CONFIG_PPC64
  BEGIN_FTR_SECTION
  	andi.	r0, r12, 0x2
  	cmpwi	cr1, r0, 0
@@ -219,7 +198,7 @@ BEGIN_FTR_SECTION
  	andi.	r12,r12,0x3ffd
  	b	2f
  END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
-#endif
+
  1:	mfsrr0	r3
  	mfsrr1	r4
  2:
@@ -265,7 +244,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
  	beq	ld_last_prev_inst
  	cmpwi	r12, BOOK3S_INTERRUPT_ALIGNMENT
  	beq-	ld_last_inst
-#ifdef CONFIG_PPC64
  BEGIN_FTR_SECTION
  	cmpwi	r12, BOOK3S_INTERRUPT_H_EMUL_ASSIST
  	beq-	ld_last_inst
@@ -274,7 +252,6 @@ BEGIN_FTR_SECTION
  	cmpwi	r12, BOOK3S_INTERRUPT_FAC_UNAVAIL
  	beq-	ld_last_inst
  END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
-#endif
b no_ld_last_inst @@ -317,7 +294,6 @@ no_ld_last_inst:
  	/* Switch back to host MMU */
  	LOAD_HOST_SEGMENTS
-#ifdef CONFIG_PPC_BOOK3S_64 lbz r5, HSTATE_RESTORE_HID5(r13)
  	cmpwi	r5, 0
@@ -342,8 +318,6 @@ no_fscr_save:
  	mtspr	SPRN_FSCR, r8
  END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
-#endif /* CONFIG_PPC_BOOK3S_64 */
-
  	/*
  	 * For some interrupts, we need to call the real Linux
  	 * handler, so it can do work for us. This has to happen
@@ -386,13 +360,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
  #endif
  	PPC_LL	r8, HSTATE_VMHANDLER(r13)
-#ifdef CONFIG_PPC64
  BEGIN_FTR_SECTION
  	beq	cr1, 1f
  	mtspr	SPRN_HSRR1, r6
  	mtspr	SPRN_HSRR0, r8
  END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
-#endif
  1:	/* Restore host msr -> SRR1 */
  	mtsrr1	r6
  	/* Load highmem handler address */
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 355d5206e8aa..74508516df51 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -229,9 +229,7 @@ int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu)
  		switch (get_xop(inst)) {
case OP_31_XOP_TRAP:
-#ifdef CONFIG_64BIT
  		case OP_31_XOP_TRAP_64:
-#endif
  #ifdef CONFIG_PPC_BOOK3S
  			kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
  #else
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index ce1d91eed231..8059876abf23 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1163,11 +1163,9 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu)
if (vcpu->arch.mmio_sign_extend) {
  		switch (run->mmio.len) {
-#ifdef CONFIG_PPC64
  		case 4:
  			gpr = (s64)(s32)gpr;
  			break;
-#endif
  		case 2:
  			gpr = (s64)(s16)gpr;
  			break;







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