Re: [PATCH 2/3] kvm-unit-test: nSVM: Add helper functions to write and read vmcb fields

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On 17/03/20 21:05, Krish Sadhukhan wrote:
> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@xxxxxxxxxx>
> ---
>  x86/svm.c | 16 ++++++++++++++++
>  x86/svm.h |  2 ++
>  2 files changed, 18 insertions(+)

I prefer to just make vmcb public in svm.h.

Please check kvm-unit-tests.git's master branch and kvm.git's queue branch.

Thanks for contributing to nested SVM tests as well!

Paolo

> diff --git a/x86/svm.c b/x86/svm.c
> index 7ce33a6..3803032 100644
> --- a/x86/svm.c
> +++ b/x86/svm.c
> @@ -233,6 +233,22 @@ int svm_vmrun(void)
>  	return (vmcb->control.exit_code);
>  }
>  
> +u64 vmcb_save_read64(size_t offset)
> +{
> +	u64 *ptr = (u64 *) ((char *) vmcb + offsetof(struct vmcb, save) +
> +	    offset);
> +
> +       return (*ptr);
> +}
> +
> +void vmcb_save_write64(size_t offset, u64 value)
> +{
> +	u64 *ptr = (u64 *) ((char *) vmcb + offsetof(struct vmcb, save) +
> +	    offset);
> +
> +       *ptr = value;
> +}
> +
>  static void test_run(struct svm_test *test)
>  {
>  	u64 vmcb_phys = virt_to_phys(vmcb);
> diff --git a/x86/svm.h b/x86/svm.h
> index 25514de..3a6af6e 100644
> --- a/x86/svm.h
> +++ b/x86/svm.h
> @@ -380,5 +380,7 @@ struct regs get_regs(void);
>  void vmmcall(void);
>  int svm_vmrun(void);
>  void test_set_guest(test_guest_func func);
> +u64 vmcb_save_read64(size_t offset);
> +void vmcb_save_write64(size_t offset, u64 value);
>  
>  #endif
> 




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