Paul Mackerras <pau...@samba.org> writes:
> This makes PR KVM allocate its kvm_vcpu structs from the kvm_vcpu_cache
> rather than having them embedded in the kvmppc_vcpu_book3s struct,
> which is allocated with vzalloc. The reason is to reduce the
> differences between PR and HV KVM in order to make is easier to have
> them coexist in one kernel binary.
>
> With this, the kvm_vcpu struct has a pointer to the kvmppc_vcpu_book3s
> struct. The pointer to the kvmppc_book3s_shadow_vcpu struct has moved
> from the kvmppc_vcpu_book3s struct to the kvm_vcpu struct.
>
> Signed-off-by: Paul Mackerras <pau...@samba.org>
> ---
> arch/powerpc/include/asm/kvm_book3s.h | 4 +---
> arch/powerpc/include/asm/kvm_book3s_32.h | 2 +-
> arch/powerpc/include/asm/kvm_host.h | 5 +++++
> arch/powerpc/kvm/book3s_32_mmu.c | 8 ++++----
> arch/powerpc/kvm/book3s_64_mmu.c | 11 +++++------
> arch/powerpc/kvm/book3s_pr.c | 29 ++++++++++++++++++-----------
> 6 files changed, 34 insertions(+), 25 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/kvm_book3s.h
> b/arch/powerpc/include/asm/kvm_book3s.h
> index 322b539..1b32f6c 100644
> --- a/arch/powerpc/include/asm/kvm_book3s.h
> +++ b/arch/powerpc/include/asm/kvm_book3s.h
> @@ -70,8 +70,6 @@ struct hpte_cache {
> };
>
> struct kvmppc_vcpu_book3s {
> - struct kvm_vcpu vcpu;
> - struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
> struct kvmppc_sid_map sid_map[SID_MAP_NUM];
> struct {
> u64 esid;
> @@ -192,7 +190,7 @@ extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned
> long cmd);
>
> static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
> {
> - return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
> + return vcpu->arch.book3s;
> }
>
> extern void kvm_return_point(void);
> diff --git a/arch/powerpc/include/asm/kvm_book3s_32.h
> b/arch/powerpc/include/asm/kvm_book3s_32.h
> index ce0ef6c..c720e0b 100644
> --- a/arch/powerpc/include/asm/kvm_book3s_32.h
> +++ b/arch/powerpc/include/asm/kvm_book3s_32.h
> @@ -22,7 +22,7 @@
>
> static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu
> *vcpu)
> {
> - return to_book3s(vcpu)->shadow_vcpu;
> + return vcpu->arch.shadow_vcpu;
> }
>
> static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu)
> diff --git a/arch/powerpc/include/asm/kvm_host.h
> b/arch/powerpc/include/asm/kvm_host.h
> index c37207f..4d83972 100644
> --- a/arch/powerpc/include/asm/kvm_host.h
> +++ b/arch/powerpc/include/asm/kvm_host.h
> @@ -91,6 +91,9 @@ struct lppaca;
> struct slb_shadow;
> struct dtl_entry;
>
> +struct kvmppc_vcpu_book3s;
> +struct kvmppc_book3s_shadow_vcpu;
> +
> struct kvm_vm_stat {
> u32 remote_tlb_flush;
> };
> @@ -409,6 +412,8 @@ struct kvm_vcpu_arch {
> int slb_max; /* 1 + index of last valid entry in slb[] */
> int slb_nr; /* total number of entries in SLB */
> struct kvmppc_mmu mmu;
> + struct kvmppc_vcpu_book3s *book3s;
> + struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
> #endif
can the *shadow_vcpu be within #ifdef CONFIG_PPC_BOOK3S_32 ? Rest of
the code access the variable under #ifdef CONFIG_PPC_BOOK3S_32
-aneesh
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