Re: [edk2-devel] [edk2-platforms][PATCH V1 17/20] ArmPkg/MmCommunicationDxe: Unmap FF-A RX/TX buffers during ExitBootServices

2023-07-12 Thread Oliver Smith-Denny
On 7/11/2023 7:36 AM, Nishant Sharma wrote: From: Achin Gupta An FF-A partition can map only a single RX/TX buffer pair with the framework. The DXE MM communication driver maps its pair before ExitBootServices is called. The OS cannot re-use this pair once it boots subsequently and loads its ow

[edk2-devel] [edk2-platforms][PATCH V1 17/20] ArmPkg/MmCommunicationDxe: Unmap FF-A RX/TX buffers during ExitBootServices

2023-07-11 Thread Nishant Sharma
From: Achin Gupta An FF-A partition can map only a single RX/TX buffer pair with the framework. The DXE MM communication driver maps its pair before ExitBootServices is called. The OS cannot re-use this pair once it boots subsequently and loads its own FF-A driver. This patch ensures that the DXE