Il 04/11/2013 15:04, Gleb Natapov ha scritto:
> If cpuid is called with function value greater than max supported one
> max supported value is used instead and index parameter is honored. That
> is why we need to initialize index to same value in the test to get
> same result from both cpuid invocations.
>
> diff --git a/x86/realmode.c b/x86/realmode.c
> index c57e033..0e1cd37 100644
> --- a/x86/realmode.c
> +++ b/x86/realmode.c
> @@ -1375,6 +1375,7 @@ static void test_cpuid(void)
> unsigned eax, ebx, ecx, edx;
>
> inregs.eax = eax = function;
> + inregs.ecx = ecx = 0;
> asm("cpuid" : "+a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx));
> exec_in_big_real_mode(&insn_cpuid);
> report("cpuid", R_AX|R_BX|R_CX|R_DX,
> --
> Gleb.
>
Reviewed-by: Paolo Bonzini <[email protected]>
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