Re: [Xen-devel] [PATCH v3 3/7] x86emul/test: factor out emul_test_{read_cr, cpuid}

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Dec 12, 2016 at 02:45:45AM -0700, Jan Beulich wrote:
> >>> On 12.12.16 at 10:28, <wei.liu2@xxxxxxxxxx> wrote:
> > While at it, move xgetbv, all cpu_has_* and cache_line_size macros to
> > x86_emulate.h.
> > 
> > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> 
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
> with one further cosmetic request:
> 
> > --- a/tools/tests/x86_emulator/x86_emulate.c
> > +++ b/tools/tests/x86_emulator/x86_emulate.c
> > @@ -38,4 +38,43 @@ bool emul_test_make_stack_executable(void)
> >                      MMAP_SZ, PROT_READ|PROT_WRITE|PROT_EXEC) == 0;
> >  }
> >  
> > +int emul_test_cpuid(
> > +    unsigned int *eax,
> > +    unsigned int *ebx,
> > +    unsigned int *ecx,
> > +    unsigned int *edx,
> > +    struct x86_emulate_ctxt *ctxt)
> > +{
> > +    unsigned int leaf = *eax;
> > +
> > +    asm ("cpuid" : "+a" (*eax), "+c" (*ecx), "=d" (*edx), "=b" (*ebx));
> > +
> > +    /* The emulator doesn't itself use MOVBE, so we can always run the 
> > test. */
> > +    if ( leaf == 1 )
> > +        *ecx |= 1U << 22;
> 
> The comment here wants some adjustment: "the test" is no longer
> applicable. Perhaps "respective tests"?
> 

Sure. I will make the change in my branch.

Wei.

> Jan
> 

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