Re: [PATCH kvmtool 5/6] kvm: Add arch specific reset

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On Tue,  4 Dec 2018 11:14:32 +0000
Julien Thierry <julien.thierry@xxxxxxx> wrote:

Hi,

> Add a callback that allows to set arch specific default values when
> creating fresh VM.

So is this needed just for initialising the LIST_HEAD in the next
patch? Can't we use some dev_init() call for that purpose, or even add
the nonvolatile memory device to all architectures and init this in one
place?

Cheers,
Andre.

> 
> Signed-off-by: Julien Thierry <julien.thierry@xxxxxxx>
> ---
>  arm/kvm.c         | 4 ++++
>  include/kvm/kvm.h | 1 +
>  kvm.c             | 2 ++
>  mips/kvm.c        | 4 ++++
>  powerpc/kvm.c     | 4 ++++
>  x86/kvm.c         | 4 ++++
>  6 files changed, 19 insertions(+)
> 
> diff --git a/arm/kvm.c b/arm/kvm.c
> index d5bbbc3..1a2cfdc 100644
> --- a/arm/kvm.c
> +++ b/arm/kvm.c
> @@ -57,6 +57,10 @@ void kvm__arch_set_cmdline(char *cmdline, bool
> video) {
>  }
>  
> +void kvm__arch_reset(struct kvm *kvm)
> +{
> +}
> +
>  void kvm__arch_init(struct kvm *kvm, const char *hugetlbfs_path, u64
> ram_size) {
>  	/*
> diff --git a/include/kvm/kvm.h b/include/kvm/kvm.h
> index 1edacfd..eeeb10c 100644
> --- a/include/kvm/kvm.h
> +++ b/include/kvm/kvm.h
> @@ -136,6 +136,7 @@ int kvm__enumerate_instances(int
> (*callback)(const char *name, int pid)); void
> kvm__remove_socket(const char *name); 
>  void kvm__arch_set_cmdline(char *cmdline, bool video);
> +void kvm__arch_reset(struct kvm *kvm);
>  void kvm__arch_init(struct kvm *kvm, const char *hugetlbfs_path, u64
> ram_size); void kvm__arch_delete_ram(struct kvm *kvm);
>  int kvm__arch_setup_firmware(struct kvm *kvm);
> diff --git a/kvm.c b/kvm.c
> index 7de825a..05ad0b6 100644
> --- a/kvm.c
> +++ b/kvm.c
> @@ -158,6 +158,8 @@ struct kvm *kvm__new(void)
>  	kvm->sys_fd = -1;
>  	kvm->vm_fd = -1;
>  
> +	kvm__arch_reset(kvm);
> +
>  	return kvm;
>  }
>  
> diff --git a/mips/kvm.c b/mips/kvm.c
> index 211770d..3f6fd20 100644
> --- a/mips/kvm.c
> +++ b/mips/kvm.c
> @@ -56,6 +56,10 @@ void kvm__arch_set_cmdline(char *cmdline, bool
> video) 
>  }
>  
> +void kvm__arch_reset(struct kvm *kvm)
> +{
> +}
> +
>  /* Architecture-specific KVM init */
>  void kvm__arch_init(struct kvm *kvm, const char *hugetlbfs_path, u64
> ram_size) {
> diff --git a/powerpc/kvm.c b/powerpc/kvm.c
> index 702d67d..5bb721b 100644
> --- a/powerpc/kvm.c
> +++ b/powerpc/kvm.c
> @@ -87,6 +87,10 @@ void kvm__arch_set_cmdline(char *cmdline, bool
> video) /* We don't need anything unusual in here. */
>  }
>  
> +void kvm__arch_reset(struct kvm *kvm)
> +{
> +}
> +
>  /* Architecture-specific KVM init */
>  void kvm__arch_init(struct kvm *kvm, const char *hugetlbfs_path, u64
> ram_size) {
> diff --git a/x86/kvm.c b/x86/kvm.c
> index 3e0f0b7..e017d36 100644
> --- a/x86/kvm.c
> +++ b/x86/kvm.c
> @@ -129,6 +129,10 @@ void kvm__arch_set_cmdline(char *cmdline, bool
> video) strcat(cmdline, " earlyprintk=serial i8042.noaux=1");
>  }
>  
> +void kvm__arch_reset(struct kvm *kvm)
> +{
> +}
> +
>  /* Architecture-specific KVM init */
>  void kvm__arch_init(struct kvm *kvm, const char *hugetlbfs_path, u64
> ram_size) {




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