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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Cc: kvm@vger.kernel.org, jmattson@google.com, pbonzini@redhat.com,
	vkuznets@redhat.com, qemu-devel@nongnu.org
Subject: Re: [PATCH 1/6 v3] KVM: x86: Change names of some of the kvm_x86_ops functions to make them more semantical and readable
Date: Mon, 28 Sep 2020 21:03:11 -0700	[thread overview]
Message-ID: <20200929040309.GI31514@linux.intel.com> (raw)
In-Reply-To: <1595895050-105504-2-git-send-email-krish.sadhukhan@oracle.com>

This needs a changelog.

I would also split the non-x86 parts, i.e. the kvm_arch_* renames, to a
separate patch.

On Tue, Jul 28, 2020 at 12:10:45AM +0000, Krish Sadhukhan wrote:
> Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
> ---
> @@ -4016,15 +4016,15 @@ static int svm_vm_init(struct kvm *kvm)
>  	.tlb_flush_gva = svm_flush_tlb_gva,
>  	.tlb_flush_guest = svm_flush_tlb,
>  
> -	.run = svm_vcpu_run,
> +	.vcpu_run = svm_vcpu_run,
>  	.handle_exit = handle_exit,
>  	.skip_emulated_instruction = skip_emulated_instruction,
>  	.update_emulated_instruction = NULL,
>  	.set_interrupt_shadow = svm_set_interrupt_shadow,
>  	.get_interrupt_shadow = svm_get_interrupt_shadow,
>  	.patch_hypercall = svm_patch_hypercall,
> -	.set_irq = svm_set_irq,
> -	.set_nmi = svm_inject_nmi,
> +	.inject_irq = svm_set_irq,

I would strongly prefer these renames to be fully recursive within a single
patch, i.e. rename svm_set_irq() as well.

Ditto for the unsetup->teardown change.

> +	.inject_nmi = svm_inject_nmi,
>  	.queue_exception = svm_queue_exception,
>  	.cancel_injection = svm_cancel_injection,
>  	.interrupt_allowed = svm_interrupt_allowed,
> @@ -4080,8 +4080,8 @@ static int svm_vm_init(struct kvm *kvm)
>  	.enable_smi_window = enable_smi_window,
>  
>  	.mem_enc_op = svm_mem_enc_op,
> -	.mem_enc_reg_region = svm_register_enc_region,
> -	.mem_enc_unreg_region = svm_unregister_enc_region,
> +	.mem_enc_register_region = svm_register_enc_region,
> +	.mem_enc_unregister_region = svm_unregister_enc_region,
>  
>  	.need_emulation_on_page_fault = svm_need_emulation_on_page_fault,
>  

...

> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 4fdf303..cb6f153 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1469,15 +1469,15 @@ struct kvm_s390_ucas_mapping {
>  #define KVM_S390_GET_CMMA_BITS      _IOWR(KVMIO, 0xb8, struct kvm_s390_cmma_log)
>  #define KVM_S390_SET_CMMA_BITS      _IOW(KVMIO, 0xb9, struct kvm_s390_cmma_log)
>  /* Memory Encryption Commands */
> -#define KVM_MEMORY_ENCRYPT_OP      _IOWR(KVMIO, 0xba, unsigned long)
> +#define KVM_MEM_ENC_OP	            _IOWR(KVMIO, 0xba, unsigned long)

Renaming macros in uapi headers will break userspace.

We could do

  #define KVM_MEMORY_ENCRYPT_OP	KVM_MEM_ENC_OP

internally, but personally I think it would do more harm than good.

>  struct kvm_enc_region {
>  	__u64 addr;
>  	__u64 size;
>  };
>  
> -#define KVM_MEMORY_ENCRYPT_REG_REGION    _IOR(KVMIO, 0xbb, struct kvm_enc_region)
> -#define KVM_MEMORY_ENCRYPT_UNREG_REGION  _IOR(KVMIO, 0xbc, struct kvm_enc_region)
> +#define KVM_MEM_ENC_REGISTER_REGION    _IOR(KVMIO, 0xbb, struct kvm_enc_region)
> +#define KVM_MEM_ENC_UNREGISTER_REGION  _IOR(KVMIO, 0xbc, struct kvm_enc_region)
>  
>  /* Available with KVM_CAP_HYPERV_EVENTFD */
>  #define KVM_HYPERV_EVENTFD        _IOW(KVMIO,  0xbd, struct kvm_hyperv_eventfd)

WARNING: multiple messages have this Message-ID (diff)
From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Cc: pbonzini@redhat.com, vkuznets@redhat.com, qemu-devel@nongnu.org,
	kvm@vger.kernel.org, jmattson@google.com
Subject: Re: [PATCH 1/6 v3] KVM: x86: Change names of some of the kvm_x86_ops functions to make them more semantical and readable
Date: Mon, 28 Sep 2020 21:03:11 -0700	[thread overview]
Message-ID: <20200929040309.GI31514@linux.intel.com> (raw)
In-Reply-To: <1595895050-105504-2-git-send-email-krish.sadhukhan@oracle.com>

This needs a changelog.

I would also split the non-x86 parts, i.e. the kvm_arch_* renames, to a
separate patch.

On Tue, Jul 28, 2020 at 12:10:45AM +0000, Krish Sadhukhan wrote:
> Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
> ---
> @@ -4016,15 +4016,15 @@ static int svm_vm_init(struct kvm *kvm)
>  	.tlb_flush_gva = svm_flush_tlb_gva,
>  	.tlb_flush_guest = svm_flush_tlb,
>  
> -	.run = svm_vcpu_run,
> +	.vcpu_run = svm_vcpu_run,
>  	.handle_exit = handle_exit,
>  	.skip_emulated_instruction = skip_emulated_instruction,
>  	.update_emulated_instruction = NULL,
>  	.set_interrupt_shadow = svm_set_interrupt_shadow,
>  	.get_interrupt_shadow = svm_get_interrupt_shadow,
>  	.patch_hypercall = svm_patch_hypercall,
> -	.set_irq = svm_set_irq,
> -	.set_nmi = svm_inject_nmi,
> +	.inject_irq = svm_set_irq,

I would strongly prefer these renames to be fully recursive within a single
patch, i.e. rename svm_set_irq() as well.

Ditto for the unsetup->teardown change.

> +	.inject_nmi = svm_inject_nmi,
>  	.queue_exception = svm_queue_exception,
>  	.cancel_injection = svm_cancel_injection,
>  	.interrupt_allowed = svm_interrupt_allowed,
> @@ -4080,8 +4080,8 @@ static int svm_vm_init(struct kvm *kvm)
>  	.enable_smi_window = enable_smi_window,
>  
>  	.mem_enc_op = svm_mem_enc_op,
> -	.mem_enc_reg_region = svm_register_enc_region,
> -	.mem_enc_unreg_region = svm_unregister_enc_region,
> +	.mem_enc_register_region = svm_register_enc_region,
> +	.mem_enc_unregister_region = svm_unregister_enc_region,
>  
>  	.need_emulation_on_page_fault = svm_need_emulation_on_page_fault,
>  

...

> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 4fdf303..cb6f153 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1469,15 +1469,15 @@ struct kvm_s390_ucas_mapping {
>  #define KVM_S390_GET_CMMA_BITS      _IOWR(KVMIO, 0xb8, struct kvm_s390_cmma_log)
>  #define KVM_S390_SET_CMMA_BITS      _IOW(KVMIO, 0xb9, struct kvm_s390_cmma_log)
>  /* Memory Encryption Commands */
> -#define KVM_MEMORY_ENCRYPT_OP      _IOWR(KVMIO, 0xba, unsigned long)
> +#define KVM_MEM_ENC_OP	            _IOWR(KVMIO, 0xba, unsigned long)

Renaming macros in uapi headers will break userspace.

We could do

  #define KVM_MEMORY_ENCRYPT_OP	KVM_MEM_ENC_OP

internally, but personally I think it would do more harm than good.

>  struct kvm_enc_region {
>  	__u64 addr;
>  	__u64 size;
>  };
>  
> -#define KVM_MEMORY_ENCRYPT_REG_REGION    _IOR(KVMIO, 0xbb, struct kvm_enc_region)
> -#define KVM_MEMORY_ENCRYPT_UNREG_REGION  _IOR(KVMIO, 0xbc, struct kvm_enc_region)
> +#define KVM_MEM_ENC_REGISTER_REGION    _IOR(KVMIO, 0xbb, struct kvm_enc_region)
> +#define KVM_MEM_ENC_UNREGISTER_REGION  _IOR(KVMIO, 0xbc, struct kvm_enc_region)
>  
>  /* Available with KVM_CAP_HYPERV_EVENTFD */
>  #define KVM_HYPERV_EVENTFD        _IOW(KVMIO,  0xbd, struct kvm_hyperv_eventfd)


  reply	other threads:[~2020-09-29  4:16 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28  0:10 [PATCH 0/6 v3] KVM: x86: Fill in conforming {vmx|svm}_x86_ops and {vmx|svm}_nested_ops via macros Krish Sadhukhan
2020-07-28  0:10 ` Krish Sadhukhan
2020-07-28  0:10 ` [PATCH 1/6 v3] KVM: x86: Change names of some of the kvm_x86_ops functions to make them more semantical and readable Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan
2020-09-29  4:03   ` Sean Christopherson [this message]
2020-09-29  4:03     ` Sean Christopherson
2020-07-28  0:10 ` [PATCH 2/6 v3] KVM: SVM: Fill in conforming svm_x86_ops via macro Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan
2020-09-29  4:06   ` Sean Christopherson
2020-09-29  4:06     ` Sean Christopherson
2020-07-28  0:10 ` [PATCH 3/6 v3] KVM: nSVM: Fill in conforming svm_nested_ops " Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan
2020-07-28  0:10 ` [PATCH 4/6 v3] KVM: VMX: Fill in conforming vmx_x86_ops " Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan
2020-09-29  4:08   ` Sean Christopherson
2020-09-29  4:08     ` Sean Christopherson
2020-07-28  0:10 ` [PATCH 5/6 v3] KVM: nVMX: Fill in conforming vmx_nested_ops " Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan
2020-07-28  0:10 ` [PATCH 6/6 v3] QEMU: x86: Change KVM_MEMORY_ENCRYPT_* #defines to make them conformant to the kernel Krish Sadhukhan
2020-07-28  0:10   ` Krish Sadhukhan

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