linux-kernel - [PATCH 0/3] x86: IOPL switching cleanups

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Message-Id: <20170614124032.4159-1-brgerst@gmail.com>
Date:   Wed, 14 Jun 2017 08:40:29 -0400
From:   Brian Gerst <brgerst@...il.com>
To:     x86@...nel.org, linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>, "H . Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...capital.net>,
        Juergen Gross <jgross@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: [PATCH 0/3] x86: IOPL switching cleanups

Here are three cleanups to the IOPL switching code for x86.

[PATCH 1/3] x86: Remove native_set_iopl_mask()
[PATCH 2/3] x86-32: Simplify IOPL switch check
[PATCH 3/3] x86/xen: Move paravirt IOPL switching to slow the path

 arch/x86/include/asm/paravirt.h       |  6 ++++++
 arch/x86/include/asm/processor.h      | 22 ++--------------------
 arch/x86/include/asm/thread_info.h    |  5 ++++-
 arch/x86/include/asm/xen/hypervisor.h |  2 --
 arch/x86/kernel/ioport.c              |  6 ++++++
 arch/x86/kernel/paravirt.c            |  2 +-
 arch/x86/kernel/process.c             |  8 ++++++++
 arch/x86/kernel/process_32.c          |  9 ---------
 arch/x86/kernel/process_64.c          | 11 -----------
 arch/x86/xen/enlighten_pv.c           |  6 ++++--
 10 files changed, 31 insertions(+), 46 deletions(-)