Re: [PING MISRA] Re: [PATCH v5 2/2] x86/vmx: remove __vmread()

[dmkhn@proton.me]

On Fri, May 16, 2025 at 02:53:03PM +0200, Nicola Vetrini wrote:
> On 2025-05-16 14:45, Andrew Cooper wrote:
> > Hello,
> >
> > This is adjusting some MISRA configuration.  I'm reasonably sure the
> > change is fine as we're simply removing the referenced helper, but can
> > we get a second opinion from anyone who knows what
> > function-macro-properties.json is supposed to be doing?
> >
> > Thanks,
> >
> > ~Andrew
> >
> 
> Hi Andrew,
> 
> sorry, it slipped under other emails. The change is ok.
> 
> > On 13/05/2025 6:28 am, dmkhn@proton.me wrote:
> >> From: Denis Mukhin <dmukhin@ford.com>
> >>
> >> Remove __vmread() and adjust ECLAIR configuration to account for the
> >> change.
> >>
> >> Signed-off-by: Denis Mukhin <dmukhin@ford.com>
> 
> Reviewed-by: Nicola Vetrini <nicola.vetrini@bugseng.com>

Thank you

> 
> >> ---
> >>  docs/misra/function-macro-properties.json | 9 ---------
> >>  xen/arch/x86/include/asm/hvm/vmx/vmx.h    | 5 -----
> >>  2 files changed, 14 deletions(-)
> >>
> >> diff --git a/docs/misra/function-macro-properties.json
> >> b/docs/misra/function-macro-properties.json
> >> index 74058297b5..59ba63626e 100644
> >> --- a/docs/misra/function-macro-properties.json
> >> +++ b/docs/misra/function-macro-properties.json
> >> @@ -152,15 +152,6 @@
> >>              "taken": ""
> >>           }
> >>        },
> >> -      {
> >> -         "type": "function",
> >> -         "value": "^__vmread.*$",
> >> -         "properties":{
> >> -            "pointee_write": "2=always",
> >> -            "pointee_read": "2=never",
> >> -            "taken": ""
> >> -         }
> >> -      },
> >>        {
> >>           "type": "function",
> >>           "value": "^hvm_pci_decode_addr.*$",
> >> diff --git a/xen/arch/x86/include/asm/hvm/vmx/vmx.h
> >> b/xen/arch/x86/include/asm/hvm/vmx/vmx.h
> >> index d85b52b9d5..299e2eff6b 100644
> >> --- a/xen/arch/x86/include/asm/hvm/vmx/vmx.h
> >> +++ b/xen/arch/x86/include/asm/hvm/vmx/vmx.h
> >> @@ -336,11 +336,6 @@ static always_inline unsigned long
> >> vmread(unsigned long field)
> >>      return value;
> >>  }
> >>
> >> -static always_inline void __vmread(unsigned long field, unsigned long
> >> *value)
> >> -{
> >> -    *value = vmread(field);
> >> -}
> >> -
> >>  static always_inline void __vmwrite(unsigned long field, unsigned
> >> long value)
> >>  {
> >>      asm goto ( "vmwrite %[value], %[field]\n\t"
> 
> --
> Nicola Vetrini, B.Sc.
> Software Engineer
> BUGSENG (https://bugseng.com)
> LinkedIn: https://www.linkedin.com/in/nicola-vetrini-a42471253