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

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

Brian Inglis
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 */
--
2.28.0

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

cygwin-patches mailing list
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