audk/IntelFrameworkModulePkg/Universal/Acpi
Star Zeng 353f5ba92f IntelFrameworkModulePkg AcpiS3SaveDxe: Reduce reserved memory consumption
Reduce reserved memory consumption by page table buffer,
then OS can have more available memory to use.
Take PhysicalAddressBits = 48 and 2MB page granularity as example,
1:1 Virtual to Physical identity mapping page table buffer needs to be
((512 + 1) * 512 + 1) * 4096 = 1075843072 bytes = 0x40201000 bytes.

When BIOS does not support long mode waking vector, only allocate
2 pages (1G page enabled) or 6 pages for 4G page table, and 8 extra
pages to handles > 4G request by page fault.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18068 6f19259b-4bc3-4df7-8a09-765794883524
2015-07-27 03:04:03 +00:00
..
AcpiS3SaveDxe IntelFrameworkModulePkg AcpiS3SaveDxe: Reduce reserved memory consumption 2015-07-27 03:04:03 +00:00
AcpiSupportDxe IntelFrameworkModulePkg: Convert non DOS format files to DOS format 2014-09-03 08:45:37 +00:00