Re: [PATCH v3 27/37] x86/shstk: Introduce routines modifying shstk

Peter Zijlstra
2022-11-15T20:19:13Z

On Fri, Nov 04, 2022 at 03:35:54PM -0700, Rick Edgecombe wrote:
> +static unsigned long get_user_shstk_addr(void)
> +{
> + unsigned long long ssp;
> +
> + fpregs_lock_and_load();
> +
> + rdmsrl(MSR_IA32_PL3_SSP, ssp);
> +
> + fpregs_unlock();
> +
> + return ssp;
> +}

This doesn't return the shstk addr, unlike what the name suggests,
right?