On Mon, 16 Nov 2015, Dave Hansen wrote:
> +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
> +static inline u32 __read_pkru(void)
> +{
> + unsigned int eax, edx;
> + unsigned int ecx = 0;
> + unsigned int pkru;
> +
> + asm volatile(".byte 0x0f,0x01,0xee\n\t"
> + : "=a" (eax), "=d" (edx)
> + : "c" (ecx));
> + pkru = eax;
> + return pkru;
Wouldn't a simple 'return eax;' be sufficient?
Thanks,
tglx
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