Re: [PATCH 0/2] Fixe out-of-sync issue between GCD and CPU driver

["Wang, Jian J" <jian.j.wang@intel.com>]

Jiewen,

Any comments on this patch?


-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Jian J Wang
Sent: Tuesday, September 19, 2017 2:10 PM
To: edk2-devel@lists.01.org
Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen <jiewen.yao@intel.com>; Dong, Eric <eric.dong@intel.com>; Zeng, Star <star.zeng@intel.com>
Subject: [edk2] [PATCH 0/2] Fixe out-of-sync issue between GCD and CPU driver

There're two issues here actually.

>From GCD perspective, its SetMemorySpaceAttributes() method doesn't
accept page related attributes. That means users cannot use it to
change page attributes, and have to turn to CPU arch protocol to do it,
which is not be allowed by PI spec.

>From CpuDxe driver perspective, it doesn't update GCD memory attributes
from current page table setup during its initialization. So the memory
attributes in GCD might not reflect all memory attributes in real world.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Suggested-by: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>

Jian J Wang (2):
  UefiCpuPkg/CpuDxe: Fix out-of-sync issue in CpuDxe
  MdeModulePkg/Core: Fix out-of-sync issue in GCD

 MdeModulePkg/Core/Dxe/Gcd/Gcd.c  | 45 ++++++++++--------
 UefiCpuPkg/CpuDxe/CpuDxe.c       |  5 ++
 UefiCpuPkg/CpuDxe/CpuDxe.h       |  9 ++++
 UefiCpuPkg/CpuDxe/CpuPageTable.c | 99 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 140 insertions(+), 18 deletions(-)

-- 
2.14.1.windows.1

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