Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 003873db2133612006e4caa8e67684e7c866c550
https://github.com/tianocore/edk2/commit/003873db2133612006e4caa8e67684e7c866c550
Author: Kun Qin <ku...@microsoft.com>
Date: 2025-04-21 (Mon, 21 Apr 2025)
Changed paths:
M MdeModulePkg/Core/PiSmmCore/PiSmmIpl.c
Log Message:
-----------
MdeModulePkg: PiSmmIpl: Fix physical address dereferencing
With current implemenation, all 3 SmmCommunication* functions go through
the same routine, which will dereference the incoming pointer to inspect
whether this is a V3 buffer or not.
However, the caller always pass in the physical addresses, which could
cause the system to page fault after OS take over the runtime control.
This change reverted the common routine to its previous form to handle MM
communicate v1 and v2. Additionally, a specific communicate function for
v3 was created to support MM communicate v3.
Co-authored-by: Michael D Kinney <michael.d.kin...@intel.com>
Signed-off-by: Kun Qin <kun....@microsoft.com>
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