tree 82b9ea5f9e17f91eb8f9fe6334ae139daefbf69f
parent 7aa5128b5fea26cf224766303ea3b8df343f9a87
author Thomas Gleixner <tglx@linutronix.de> 1648129634 +0100
committer Borislav Petkov <bp@suse.de> 1648632922 +0200

x86/fpu/xstate: Handle supervisor states in XSTATE permissions

The size calculation in __xstate_request_perm() fails to take supervisor
states into account because the permission bitmap is only relevant for user
states.

Up to 5.17 this does not matter because there are no supervisor states
supported, but the (re-)enabling of ENQCMD makes them available.

Fixes: 7c1ef59145f1 ("x86/cpufeatures: Re-enable ENQCMD")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220324134623.681768598@linutronix.de