[v2] Documentation/protection-keys: Mark as available on AMD

[PATCH v2] Documentation/protection-keys: Mark as available on AMD

Posted by Daniel Tang 2 months, 2 weeks ago

This is shown on page 78 of AMD document 55898 "Preliminary Processor
Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1
Processors Volume 1 of 2" for Zen 3.

I tested this on my 5900X via the program in pkeys(7) and
`grep ospke /proc/cpuinfo`.

Signed-off-by: Daniel Tang <danielzgtg.opensource@gmail.com>
---
 Documentation/core-api/protection-keys.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/core-api/protection-keys.rst b/Documentation/core-api/protection-keys.rst
index 7eb7c6023e09..59e7c178af4b 100644
--- a/Documentation/core-api/protection-keys.rst
+++ b/Documentation/core-api/protection-keys.rst
@@ -11,7 +11,7 @@ application changes protection domains.
 Pkeys Userspace (PKU) is a feature which can be found on:
         * Intel server CPUs, Skylake and later
         * Intel client CPUs, Tiger Lake (11th Gen Core) and later
-        * Future AMD CPUs
+        * AMD Zen 3 and later
         * arm64 CPUs implementing the Permission Overlay Extension (FEAT_S1POE)
 
 x86_64
-- 
2.51.0

[PATCH v2 RESEND] Documentation/protection-keys: Mark as available on AMD

Posted by Daniel Tang 3 weeks, 2 days ago

This is shown on page 78 of AMD document 55898 "Preliminary Processor
Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1
Processors Volume 1 of 2" for Zen 3.

I tested this on my 5900X via the program in pkeys(7) and
`grep ospke /proc/cpuinfo`.

Signed-off-by: Daniel Tang <danielzgtg.opensource@gmail.com>
---
 Documentation/core-api/protection-keys.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/core-api/protection-keys.rst b/Documentation/core-api/protection-keys.rst
index 7eb7c6023e09..59e7c178af4b 100644
--- a/Documentation/core-api/protection-keys.rst
+++ b/Documentation/core-api/protection-keys.rst
@@ -11,7 +11,7 @@ application changes protection domains.
 Pkeys Userspace (PKU) is a feature which can be found on:
         * Intel server CPUs, Skylake and later
         * Intel client CPUs, Tiger Lake (11th Gen Core) and later
-        * Future AMD CPUs
+        * AMD Zen 3 and later
         * arm64 CPUs implementing the Permission Overlay Extension (FEAT_S1POE)
 
 x86_64
-- 
2.51.0

Re: [PATCH v2 RESEND] Documentation/protection-keys: Mark as available on AMD

Posted by Bagas Sanjaya 3 weeks, 2 days ago

On Wed, Jan 14, 2026 at 09:06:20PM -0500, Daniel Tang wrote:
> diff --git a/Documentation/core-api/protection-keys.rst b/Documentation/core-api/protection-keys.rst
> index 7eb7c6023e09..59e7c178af4b 100644
> --- a/Documentation/core-api/protection-keys.rst
> +++ b/Documentation/core-api/protection-keys.rst
> @@ -11,7 +11,7 @@ application changes protection domains.
>  Pkeys Userspace (PKU) is a feature which can be found on:
>          * Intel server CPUs, Skylake and later
>          * Intel client CPUs, Tiger Lake (11th Gen Core) and later
> -        * Future AMD CPUs
> +        * AMD Zen 3 and later
>          * arm64 CPUs implementing the Permission Overlay Extension (FEAT_S1POE)
>  
>  x86_64

Acked-by: Bagas Sanjaya <bagasdotme@gmail.com>

-- 
An old man doll... just what I always wanted! - Clara