On Wed, 2018-12-12 at 15:16 +1100, Paul Mackerras wrote:
> This adds 'const' to the declarations for the struct kvm_memory_slot
> pointer parameters of some functions, which will make it possible to
> call those functions from kvmppc_core_commit_memory_region_hv()
> in the next patch.
>
> This also fixes some comments about locking.
Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@xxxxxxxxx>
>
> Signed-off-by: Paul Mackerras <paulus@xxxxxxxxxx>
> ---
> arch/powerpc/include/asm/kvm_book3s.h | 9 +++------
> arch/powerpc/include/asm/kvm_book3s_64.h | 2 +-
> arch/powerpc/kvm/book3s_64_mmu_radix.c | 9 +++++----
> arch/powerpc/kvm/book3s_hv_nested.c | 2 +-
> arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 +-
> 5 files changed, 11 insertions(+), 13 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/kvm_book3s.h
> b/arch/powerpc/include/asm/kvm_book3s.h
> index 09f8e9b..728d2b7 100644
> --- a/arch/powerpc/include/asm/kvm_book3s.h
> +++ b/arch/powerpc/include/asm/kvm_book3s.h
> @@ -197,7 +197,8 @@ extern int
> kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr,
> extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t
> eaddr,
> struct kvmppc_pte *gpte, bool data, bool
> iswrite);
> extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned
> long gpa,
> - unsigned int shift, struct kvm_memory_slot
> *memslot,
> + unsigned int shift,
> + const struct kvm_memory_slot *memslot,
> unsigned int lpid);
> extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, pgd_t *pgtable,
> bool writing, unsigned long gpa,
> @@ -215,10 +216,6 @@ extern int kvmppc_radix_init(void);
> extern void kvmppc_radix_exit(void);
> extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot
> *memslot,
> unsigned long gfn);
> -extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte,
> - unsigned long gpa, unsigned int shift,
> - struct kvm_memory_slot *memslot,
> - unsigned int lpid);
> extern int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot
> *memslot,
> unsigned long gfn);
> extern int kvm_test_age_radix(struct kvm *kvm, struct
> kvm_memory_slot *memslot,
> @@ -242,7 +239,7 @@ extern kvm_pfn_t kvmppc_gpa_to_pfn(struct
> kvm_vcpu *vcpu, gpa_t gpa,
> bool writing, bool *writable);
> extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct
> revmap_entry *rev,
> unsigned long *rmap, long pte_index, int
> realmode);
> -extern void kvmppc_update_dirty_map(struct kvm_memory_slot *memslot,
> +extern void kvmppc_update_dirty_map(const struct kvm_memory_slot
> *memslot,
> unsigned long gfn, unsigned long psize);
> extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
> unsigned long pte_index);
> diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h
> b/arch/powerpc/include/asm/kvm_book3s_64.h
> index 6d29814..c9cbaf0 100644
> --- a/arch/powerpc/include/asm/kvm_book3s_64.h
> +++ b/arch/powerpc/include/asm/kvm_book3s_64.h
> @@ -625,7 +625,7 @@ extern int kvmppc_create_pte(struct kvm *kvm,
> pgd_t *pgtable, pte_t pte,
> extern void kvmhv_insert_nest_rmap(struct kvm *kvm, unsigned long
> *rmapp,
> struct rmap_nested **n_rmap);
> extern void kvmhv_remove_nest_rmap_range(struct kvm *kvm,
> - struct kvm_memory_slot *memslot,
> + const struct kvm_memory_slot
> *memslot,
> unsigned long gpa, unsigned long
> hpa,
> unsigned long nbytes);
>
> diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c
> b/arch/powerpc/kvm/book3s_64_mmu_radix.c
> index 87ad35e..52711eb 100644
> --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
> +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
> @@ -284,7 +284,8 @@ static void kvmppc_pmd_free(pmd_t *pmdp)
>
> /* Called with kvm->mmu_lock held */
> void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long
> gpa,
> - unsigned int shift, struct kvm_memory_slot
> *memslot,
> + unsigned int shift,
> + const struct kvm_memory_slot *memslot,
> unsigned int lpid)
>
> {
> @@ -861,7 +862,7 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run
> *run, struct kvm_vcpu *vcpu,
> return ret;
> }
>
> -/* Called with kvm->lock held */
> +/* Called with kvm->mmu_lock held */
> int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot
> *memslot,
> unsigned long gfn)
> {
> @@ -876,7 +877,7 @@ int kvm_unmap_radix(struct kvm *kvm, struct
> kvm_memory_slot *memslot,
> return 0;
> }
>
> -/* Called with kvm->lock held */
> +/* Called with kvm->mmu_lock held */
> int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
> unsigned long gfn)
> {
> @@ -895,7 +896,7 @@ int kvm_age_radix(struct kvm *kvm, struct
> kvm_memory_slot *memslot,
> return ref;
> }
>
> -/* Called with kvm->lock held */
> +/* Called with kvm->mmu_lock held */
> int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot
> *memslot,
> unsigned long gfn)
> {
> diff --git a/arch/powerpc/kvm/book3s_hv_nested.c
> b/arch/powerpc/kvm/book3s_hv_nested.c
> index 401d2ec..6d1b14b 100644
> --- a/arch/powerpc/kvm/book3s_hv_nested.c
> +++ b/arch/powerpc/kvm/book3s_hv_nested.c
> @@ -723,7 +723,7 @@ static void kvmhv_remove_nest_rmap_list(struct
> kvm *kvm, unsigned long *rmapp,
>
> /* called with kvm->mmu_lock held */
> void kvmhv_remove_nest_rmap_range(struct kvm *kvm,
> - struct kvm_memory_slot *memslot,
> + const struct kvm_memory_slot
> *memslot,
> unsigned long gpa, unsigned long
> hpa,
> unsigned long nbytes)
> {
> diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
> b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
> index a67cf1c..3b3791e 100644
> --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
> +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
> @@ -107,7 +107,7 @@ void kvmppc_add_revmap_chain(struct kvm *kvm,
> struct revmap_entry *rev,
> EXPORT_SYMBOL_GPL(kvmppc_add_revmap_chain);
>
> /* Update the dirty bitmap of a memslot */
> -void kvmppc_update_dirty_map(struct kvm_memory_slot *memslot,
> +void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot,
> unsigned long gfn, unsigned long psize)
> {
> unsigned long npages;
