linux-kernel - [PATCH v3 2/2] x86/umip: Update the comments to cover generic x86 processors

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Message-ID: <157298913784.17462.12654728938970637305.stgit@naples-babu.amd.com>
Date:   Tue, 5 Nov 2019 21:25:40 +0000
From:   "Moger, Babu" <Babu.Moger@....com>
To:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "hpa@...or.com" <hpa@...or.com>,
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CC:     "x86@...nel.org" <x86@...nel.org>,
        "joro@...tes.org" <joro@...tes.org>,
        "Moger, Babu" <Babu.Moger@....com>,
        "luto@...nel.org" <luto@...nel.org>,
        "zohar@...ux.ibm.com" <zohar@...ux.ibm.com>,
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        "ricardo.neri-calderon@...ux.intel.com" 
        <ricardo.neri-calderon@...ux.intel.com>,
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Subject: [PATCH v3 2/2] x86/umip: Update the comments to cover generic x86
 processors

AMD 2nd generation EPYC processors also support UMIP feature.
Update the comments to cover generic x86 processors.

Signed-off-by: Babu Moger <babu.moger@....com>
---
 arch/x86/kernel/umip.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/umip.c b/arch/x86/kernel/umip.c
index 548fefed71ee..8ccef6c495dc 100644
--- a/arch/x86/kernel/umip.c
+++ b/arch/x86/kernel/umip.c
@@ -1,6 +1,6 @@
 /*
- * umip.c Emulation for instruction protected by the Intel User-Mode
- * Instruction Prevention feature
+ * umip.c Emulation for instruction protected by the User-Mode Instruction
+ * Prevention feature
  *
  * Copyright (c) 2017, Intel Corporation.
  * Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
@@ -18,10 +18,10 @@
 
 /** DOC: Emulation for User-Mode Instruction Prevention (UMIP)
  *
- * The feature User-Mode Instruction Prevention present in recent Intel
- * processor prevents a group of instructions (SGDT, SIDT, SLDT, SMSW and STR)
- * from being executed with CPL > 0. Otherwise, a general protection fault is
- * issued.
+ * User-Mode Instruction Prevention is a security feature present in recent
+ * x86 processors that, when enabled, prevents a group of instructions (SGDT,
+ * SIDT, SLDT, SMSW and STR) from being run in user mode by issuing a general
+ * protection fault if the instruction is executed with CPL > 0.
  *
  * Rather than relaying to the user space the general protection fault caused by
  * the UMIP-protected instructions (in the form of a SIGSEGV signal), it can be