On Fri, 13 Dec 2019 18:24:57 +0000
Marc Zyngier <maz@xxxxxxxxxx> wrote:
> kvm_unmap_hva_range() is currently passed both start and end
> fields from the mmu_notifier_range structure. As this struct
> now contains important information about the reason of the
> unmap (the event field), replace the start/end parameters
> with the range struct, and update all architectures.
>
> No functionnal change.
>
> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
> ---
> arch/arm/include/asm/kvm_host.h | 2 +-
> arch/arm64/include/asm/kvm_host.h | 2 +-
> arch/mips/include/asm/kvm_host.h | 2 +-
> arch/mips/kvm/mmu.c | 6 ++++--
> arch/powerpc/include/asm/kvm_host.h | 2 +-
> arch/powerpc/kvm/book3s.c | 5 +++--
> arch/powerpc/kvm/e500_mmu_host.c | 4 ++--
> arch/x86/include/asm/kvm_host.h | 3 ++-
> arch/x86/kvm/mmu/mmu.c | 5 +++--
> arch/x86/kvm/x86.c | 4 ++--
> include/linux/kvm_host.h | 2 +-
> virt/kvm/arm/mmu.c | 8 ++++----
> virt/kvm/kvm_main.c | 7 +++----
> 13 files changed, 28 insertions(+), 24 deletions(-)
>
> diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
> index 556cd818eccf..621c71594499 100644
> --- a/arch/arm/include/asm/kvm_host.h
> +++ b/arch/arm/include/asm/kvm_host.h
> @@ -276,7 +276,7 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
>
> #define KVM_ARCH_WANT_MMU_NOTIFIER
> int kvm_unmap_hva_range(struct kvm *kvm,
> - unsigned long start, unsigned long end);
> + const struct mmu_notifier_range *range);
> int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
>
> unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> index c61260cf63c5..dd850f5e81e3 100644
> --- a/arch/arm64/include/asm/kvm_host.h
> +++ b/arch/arm64/include/asm/kvm_host.h
> @@ -441,7 +441,7 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
>
> #define KVM_ARCH_WANT_MMU_NOTIFIER
> int kvm_unmap_hva_range(struct kvm *kvm,
> - unsigned long start, unsigned long end);
> + const struct mmu_notifier_range *range);
> int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
> int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
> int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
> diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
> index 41204a49cf95..0ed065870f1b 100644
> --- a/arch/mips/include/asm/kvm_host.h
> +++ b/arch/mips/include/asm/kvm_host.h
> @@ -935,7 +935,7 @@ enum kvm_mips_fault_result kvm_trap_emul_gva_fault(struct kvm_vcpu *vcpu,
>
> #define KVM_ARCH_WANT_MMU_NOTIFIER
> int kvm_unmap_hva_range(struct kvm *kvm,
> - unsigned long start, unsigned long end);
> + const struct mmu_notifier_range *range);
> int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
> int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
> int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
> diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c
> index 7dad7a293eae..32ef868258b9 100644
> --- a/arch/mips/kvm/mmu.c
> +++ b/arch/mips/kvm/mmu.c
> @@ -518,9 +518,11 @@ static int kvm_unmap_hva_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end,
> return 1;
> }
>
> -int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
> +int kvm_unmap_hva_range(struct kvm *kvm,
> + const struct mmu_notifier_range *range)
> {
> - handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, NULL);
> + handle_hva_to_gpa(kvm, range->start, range->end,
> + &kvm_unmap_hva_handler, NULL);
>
> kvm_mips_callbacks->flush_shadow_all(kvm);
> return 0;
> diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
> index 0a398f2321c2..8cef585e0abe 100644
> --- a/arch/powerpc/include/asm/kvm_host.h
> +++ b/arch/powerpc/include/asm/kvm_host.h
> @@ -58,7 +58,7 @@
> #define KVM_ARCH_WANT_MMU_NOTIFIER
>
> extern int kvm_unmap_hva_range(struct kvm *kvm,
> - unsigned long start, unsigned long end);
> + const struct mmu_notifier_range *range);
> extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
> extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
> extern int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
> diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
> index 58a59ee998e2..a1529a0dd656 100644
> --- a/arch/powerpc/kvm/book3s.c
> +++ b/arch/powerpc/kvm/book3s.c
> @@ -842,9 +842,10 @@ void kvmppc_core_commit_memory_region(struct kvm *kvm,
> kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
> }
>
> -int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
> +int kvm_unmap_hva_range(struct kvm *kvm,
> + const struct mmu_notifier_range *range)
> {
> - return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
> + return kvm->arch.kvm_ops->unmap_hva_range(kvm, range->start, range->end);
> }
>
> int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
> diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
> index 425d13806645..5a7211901063 100644
> --- a/arch/powerpc/kvm/e500_mmu_host.c
> +++ b/arch/powerpc/kvm/e500_mmu_host.c
> @@ -734,10 +734,10 @@ static int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
> return 0;
> }
>
> -int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
> +int kvm_unmap_hva_range(struct kvm *kvm, const struct mmu_notifier_range *range)
> {
> /* kvm_unmap_hva flushes everything anyways */
> - kvm_unmap_hva(kvm, start);
> + kvm_unmap_hva(kvm, range->start);
>
> return 0;
> }
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index b79cd6aa4075..c479fa845d72 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1569,7 +1569,8 @@ asmlinkage void kvm_spurious_fault(void);
> _ASM_EXTABLE(666b, 667b)
>
> #define KVM_ARCH_WANT_MMU_NOTIFIER
> -int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
> +int kvm_unmap_hva_range(struct kvm *kvm,
> + const struct mmu_notifier_range *range);
> int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
> int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
> int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 6f92b40d798c..86831be07c17 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -2040,9 +2040,10 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
> return kvm_handle_hva_range(kvm, hva, hva + 1, data, handler);
> }
>
> -int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
> +int kvm_unmap_hva_range(struct kvm *kvm,
> + const struct mmu_notifier_range *range);
> {
> - return kvm_handle_hva_range(kvm, start, end, 0, kvm_unmap_rmapp);
> + return kvm_handle_hva_range(kvm, range->start, range->end, 0, kvm_unmap_rmapp);
> }
As kindly pointed out by the kbuild robot, this doesn't even compile...
I've fixed it locally, incorporating Suzuki's feedback at the same time.
M.
--
Jazz is not dead. It just smells funny...
