mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
To: Ingo Molnar <mingo@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>, Andy Lutomirski <luto@kernel.org>,
	Tony Luck <tony.luck@intel.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
	x86@kernel.org, ricardo.neri@intel.com,
	linux-kernel@vger.kernel.org,
	Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Subject: [RESEND PATCH v2 2/4] x86/umip: Inform that UMIP has been enabled
Date: Mon, 13 Nov 2017 22:29:43 -0800	[thread overview]
Message-ID: <1510640985-18412-3-git-send-email-ricardo.neri-calderon@linux.intel.com> (raw)
In-Reply-To: <1510640985-18412-1-git-send-email-ricardo.neri-calderon@linux.intel.com>

Let us have an indication that this feature has been enabled.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ravi V. Shankar <ravi.v.shankar@intel.com>
Cc: x86@kernel.org
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
 arch/x86/kernel/cpu/common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 13ae9e5..fa998ca 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -341,6 +341,8 @@ static __always_inline void setup_umip(struct cpuinfo_x86 *c)
 
 	cr4_set_bits(X86_CR4_UMIP);
 
+	pr_info("x86/cpu: Activated the Intel User Mode Instruction Prevention (UMIP) CPU feature\n");
+
 	return;
 
 out:
-- 
2.7.4

  parent reply	other threads:[~2017-11-14  6:31 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-14  6:29 [RESEND PATCH v2 0/4] x86: Tweaks for UMIP Ricardo Neri
2017-11-14  6:29 ` [RESEND PATCH v2 1/4] x86/umip: Select X86_INTEL_UMIP by default Ricardo Neri
2017-11-14  9:30   ` [tip:x86/urgent] " tip-bot for Ricardo Neri
2017-11-14  6:29 ` Ricardo Neri [this message]
2017-11-14  9:31   ` [tip:x86/urgent] x86/umip: Print a line in the boot log that UMIP has been enabled tip-bot for Ricardo Neri
2017-11-14  6:29 ` [RESEND PATCH v2 3/4] x86/umip: Identify the str and sldt instructions Ricardo Neri
2017-11-14  7:21   ` Ingo Molnar
2017-11-15  2:44     ` Ricardo Neri
2017-11-14  9:31   ` [tip:x86/urgent] x86/umip: Identify the STR and SLDT instructions tip-bot for Ricardo Neri
2017-11-14  6:29 ` [RESEND PATCH v2 4/4] x86/umip: Warn if UMIP-protected instructions are used Ricardo Neri
2017-11-14  7:34   ` Ingo Molnar
2017-11-15  2:56     ` Ricardo Neri
2017-11-15  8:41       ` Ingo Molnar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1510640985-18412-3-git-send-email-ricardo.neri-calderon@linux.intel.com \
    --to=ricardo.neri-calderon@linux.intel.com \
    --cc=bp@suse.de \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luto@kernel.org \
    --cc=mingo@kernel.org \
    --cc=pbonzini@redhat.com \
    --cc=ravi.v.shankar@intel.com \
    --cc=ricardo.neri@intel.com \
    --cc=tglx@linutronix.de \
    --cc=tony.luck@intel.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®