linux-kernel - [PATCH 00/13] x86/microcode: 4.11 queue

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Date:   Tue, 17 Jan 2017 18:37:21 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 00/13] x86/microcode: 4.11 queue

From: Borislav Petkov <bp@...e.de>

Hi,

so this is more of a lessons-learned pile after the rewriting of the
whole patch loading method and not caching addresses. It largely
simplifies the loader - just look at the diffstat - without any
functionality loss (I hope :-)). The driver is also very much readable
now with unified, common paths where possible.

What is more, 6/13 reworks the whole AMD container parsing into much
more readable separation of functionality and functions doing only one
thing properly.

13/13 is also another nice simplification for the AP update path which
looks almost straightforward in comparison with what we had before.

All has been tested on a lot of boxes and in different configurations:

* builtin vs initrd microcode
* old microcode_ctl application method for Intel
* "echo 1 > /sys/devices/system/cpu/microcode/reload" late method
* CONFIG_RANDOMIZE_MEMORY

both on Intel and AMD machines.

Please queue for 4.11.

Thanks.

Borislav Petkov (13):
  x86/microcode/intel: Drop stashed AP patch pointer optimization
  x86/microcode: Use own MSR accessors
  x86/microcode/AMD: Clean up find_equiv_id()
  x86/microcode/AMD: Shorten function parameter's name
  x86/microcode/AMD: Extend the container struct
  x86/microcode/AMD: Rework container parsing
  x86/microcode: Decrease CPUID use
  x86/microcode/AMD: Get rid of global this_equiv_id
  x86/microcode/AMD: Use find_microcode_in_initrd()
  x86/microcode/AMD: Check patch level only on the BSP
  x86/microcode/AMD: Unify load_ucode_amd_ap()
  x86/microcode/AMD: Simplify saving from initrd
  x86/microcode/AMD: Remove AP scanning optimization

 arch/x86/include/asm/microcode.h       |  29 +-
 arch/x86/include/asm/microcode_amd.h   |   2 -
 arch/x86/include/asm/microcode_intel.h |   4 +-
 arch/x86/kernel/cpu/microcode/amd.c    | 501 +++++++++++----------------------
 arch/x86/kernel/cpu/microcode/core.c   |  81 ++++--
 arch/x86/kernel/cpu/microcode/intel.c  |  13 +-
 6 files changed, 248 insertions(+), 382 deletions(-)

-- 
2.11.0