[PATCH] fhandler_proc.cc(format_proc_cpuinfo): add tsxldtrk, sev_es flags

[Ken Brown]

On 9/17/2020 2:51 PM, Brian Inglis wrote:
> Add linux-next cpuinfo flags for Intel TSX suspend load address tracking
> instructions and AMD Secure Encrypted Virtualization with Encrypted State
> ---
>   winsup/cygwin/fhandler_proc.cc | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
> index 196bafd18993..6f6e8291a0ca 100644
> --- a/winsup/cygwin/fhandler_proc.cc
> +++ b/winsup/cygwin/fhandler_proc.cc
> @@ -1376,6 +1376,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
>   	  cpuid (&features2, &unused, &unused, &unused, 0x8000001f);
>   
>   	  ftcprint (features2,  1, "sev");	/* secure encrypted virt */
> +	/*ftcprint (features2,  3, "sev_es"); - print below */
>   	}
>         /* cpuid 0x80000008 ebx */
>         if (maxe >= 0x80000008)
> @@ -1400,6 +1401,12 @@ format_proc_cpuinfo (void *, char *&destbuf)
>   /*	  ftcprint (features1, 26, "ssb_no");	*//* ssb fixed in hardware */
>           }
>   
> +      /* cpuid 0x8000001f eax - set above */
> +      if (maxe >= 0x8000001f)
> +	{
> +	  ftcprint (features2,  3, "sev_es");	/* AMD SEV encrypted state */
> +	}
> +
>         /* cpuid 0x00000007 ebx */
>         if (maxf >= 0x00000007)
>   	{
> @@ -1579,6 +1586,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
>             ftcprint (features1,  8, "avx512_vp2intersect"); /* vec intcpt d/q */
>             ftcprint (features1, 10, "md_clear");            /* verw clear buf */
>             ftcprint (features1, 14, "serialize");           /* SERIALIZE instruction */
> +          ftcprint (features1, 16, "tsxldtrk");		   /* TSX Susp Ld Addr Track */
>             ftcprint (features1, 18, "pconfig");		   /* platform config */
>             ftcprint (features1, 19, "arch_lbr");		   /* last branch records */
>             ftcprint (features1, 28, "flush_l1d");	   /* flush l1d cache */

Pushed with a trivial change (added a period at the end of the commit message).

Thanks.

Ken