KVM: PPC: Remove 440 support

The 440 target hasn't been properly functioning for a few releases and
before I was the only one who fixes a very serious bug that indicates to
me that nobody used it before either.

Furthermore KVM on 440 is slow to the extent of unusable.

We don't have to carry along completely unused code. Remove 440 and give
us one less thing to worry about.

Signed-off-by: Alexander Graf <agraf@suse.de>

3 files changed, 0 insertions, 71 deletions

diff --git a/arch/powerpc/include/asm/kvm_44x.h b/arch/powerpc/include/asm/kvm_44x.h
deleted file mode 100644
index a0e57618ff33..000000000000
--- a/arch/powerpc/include/asm/kvm_44x.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- *
- * Copyright IBM Corp. 2008
- *
- * Authors: Hollis Blanchard <hollisb@us.ibm.com>
- */
-
-#ifndef __ASM_44X_H__
-#define __ASM_44X_H__
-
-#include <linux/kvm_host.h>
-
-#define PPC44x_TLB_SIZE 64
-
-/* If the guest is expecting it, this can be as large as we like; we'd just
- * need to find some way of advertising it. */
-#define KVM44x_GUEST_TLB_SIZE 64
-
-struct kvmppc_44x_tlbe {
-	u32 tid; /* Only the low 8 bits are used. */
-	u32 word0;
-	u32 word1;
-	u32 word2;
-};
-
-struct kvmppc_44x_shadow_ref {
-	struct page *page;
-	u16 gtlb_index;
-	u8 writeable;
-	u8 tid;
-};
-
-struct kvmppc_vcpu_44x {
-	/* Unmodified copy of the guest's TLB. */
-	struct kvmppc_44x_tlbe guest_tlb[KVM44x_GUEST_TLB_SIZE];
-
-	/* References to guest pages in the hardware TLB. */
-	struct kvmppc_44x_shadow_ref shadow_refs[PPC44x_TLB_SIZE];
-
-	/* State of the shadow TLB at guest context switch time. */
-	struct kvmppc_44x_tlbe shadow_tlb[PPC44x_TLB_SIZE];
-	u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
-
-	struct kvm_vcpu vcpu;
-};
-
-static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
-{
-	return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
-}
-
-void kvmppc_44x_tlb_put(struct kvm_vcpu *vcpu);
-void kvmppc_44x_tlb_load(struct kvm_vcpu *vcpu);
-
-#endif /* __ASM_44X_H__ */
diff --git a/arch/powerpc/include/asm/kvm_asm.h b/arch/powerpc/include/asm/kvm_asm.h
index 3f3e53047ac4..b8901c4a4922 100644
--- a/arch/powerpc/include/asm/kvm_asm.h
+++ b/arch/powerpc/include/asm/kvm_asm.h
@@ -33,7 +33,6 @@
 /* IVPR must be 64KiB-aligned. */
 #define VCPU_SIZE_ORDER 4
 #define VCPU_SIZE_LOG   (VCPU_SIZE_ORDER + 12)
-#define VCPU_TLB_PGSZ   PPC44x_TLB_64K
 #define VCPU_SIZE_BYTES (1<<VCPU_SIZE_LOG)
 
 #define BOOKE_INTERRUPT_CRITICAL 0
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 562f685d1678..5fe2b5d17bc0 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -49,7 +49,6 @@
 #define KVM_NR_IRQCHIPS          1
 #define KVM_IRQCHIP_NUM_PINS     256
 
-#if !defined(CONFIG_KVM_440)
 #include <linux/mmu_notifier.h>
 
 #define KVM_ARCH_WANT_MMU_NOTIFIER
@@ -62,8 +61,6 @@ extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
 
-#endif
-
 #define HPTEG_CACHE_NUM			(1 << 15)
 #define HPTEG_HASH_BITS_PTE		13
 #define HPTEG_HASH_BITS_PTE_LONG	12