On 3/13/19 5:40 AM, Paolo Bonzini wrote:
> +static bool have_cet(void)
> +{
> +#if defined CONFIG_CET
> + uint64_t ssp;
> + asm ("xor %0, %0; rdsspq %0\n" : "=rm" (ssp));The xor is incompatible with a memory output. I don't think you really wanted that in the first place. Just use "=r". The rest is hard to review because of ARCH_X86_CET_ALLOC_SHSTK. I'm surprised that a prctl actually allocates memory... r~
