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SubjectRe: [RFC PATCH v2 17/27] x86/cet/shstk: User-mode shadow stack support
On Tue, Jul 10, 2018 at 03:26:29PM -0700, Yu-cheng Yu wrote:
> +struct cet_status {
> + unsigned long shstk_base;
> + unsigned long shstk_size;
> + unsigned int shstk_enabled:1;
> +};

> @@ -498,6 +499,10 @@ struct thread_struct {
> unsigned int sig_on_uaccess_err:1;
> unsigned int uaccess_err:1; /* uaccess failed */
>
> +#ifdef CONFIG_X86_INTEL_CET
> + struct cet_status cet;
> +#endif
> +
> /* Floating point and extended processor state */
> struct fpu fpu;
> /*

Why does that need a structure? That avoids folding the bitfields.

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