[PATCH] proc_cpuinfo: Add PPIN support for AMD

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[PATCH] proc_cpuinfo: Add PPIN support for AMD

Brian Inglis
Newer AMD CPUs support a feature called protected processor
identification number (PPIN). This feature can be detected via
CPUID_Fn80000008_EBX[23].
---
 winsup/cygwin/fhandler_proc.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 605a8443f0..5c5f4bd9ef 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -1262,6 +1262,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
 /*  ftcprint (features1, 14, "ibrs" ); */    /* ind br restricted spec */
 /*  ftcprint (features1, 15, "stibp"); */    /* 1 thread ind br pred */
 /*  ftcprint (features1, 17, "stibp_always_on"); */ /* stibp always on */
+  ftcprint (features1, 23, "amd_ppin");     /* protected proc id no */
 /*  ftcprint (features1, 24, "ssbd"); */    /* spec store byp dis */
   ftcprint (features1, 25, "virt_ssbd");    /* vir spec store byp dis */
 /*  ftcprint (features1, 26, "ssb_no"); */    /* ssb fixed in hardware */
--
2.21.0

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Re: [PATCH] proc_cpuinfo: Add PPIN support for AMD

Corinna Vinschen-2
On Apr 10 22:35, Brian Inglis wrote:

> Newer AMD CPUs support a feature called protected processor
> identification number (PPIN). This feature can be detected via
> CPUID_Fn80000008_EBX[23].
> ---
>  winsup/cygwin/fhandler_proc.cc | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
> index 605a8443f0..5c5f4bd9ef 100644
> --- a/winsup/cygwin/fhandler_proc.cc
> +++ b/winsup/cygwin/fhandler_proc.cc
> @@ -1262,6 +1262,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
>  /*  ftcprint (features1, 14, "ibrs" ); */    /* ind br restricted spec */
>  /*  ftcprint (features1, 15, "stibp"); */    /* 1 thread ind br pred */
>  /*  ftcprint (features1, 17, "stibp_always_on"); */ /* stibp always on */
> +  ftcprint (features1, 23, "amd_ppin");     /* protected proc id no */
>  /*  ftcprint (features1, 24, "ssbd"); */    /* spec store byp dis */
>    ftcprint (features1, 25, "virt_ssbd");    /* vir spec store byp dis */
>  /*  ftcprint (features1, 26, "ssb_no"); */    /* ssb fixed in hardware */
> --
> 2.21.0
Pushed.


Thanks,
Corinna

--
Corinna Vinschen
Cygwin Maintainer

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