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| author | Eric Dong <eric.dong@intel.com> | 2018-08-10 10:53:45 +0800 |
|---|---|---|
| committer | Eric Dong <eric.dong@intel.com> | 2018-08-16 08:42:01 +0800 |
| commit | 6eab8b4368f9bb7130271760b2e93f2172ed97ab (patch) | |
| tree | ff9e623c027274213ef31b203bbbb2fcec7d9fb9 /License.txt | |
| parent | b581721063027cb6335cada04d4a898b9dadd1a3 (diff) | |
| download | edk2-6eab8b4368f9bb7130271760b2e93f2172ed97ab.zip edk2-6eab8b4368f9bb7130271760b2e93f2172ed97ab.tar.gz edk2-6eab8b4368f9bb7130271760b2e93f2172ed97ab.tar.bz2 | |
UefiCpuPkg/CpuS3DataDxe: Remove below 4G limitation.
Because PrepareApStartupVector() stores StackAddress to
"mExchangeInfo->StackStart" (which has type (VOID*)), and because
"UefiCpuPkg/PiSmmCpuDxeSmm/X64/MpFuncs.nasm" reads the latter with:
add edi, StackStartAddressLocation
add rax, qword [edi]
mov rsp, rax
mov qword [edi], rax
in long-mode code. So code can remove below 4G limitation.
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'License.txt')
0 files changed, 0 insertions, 0 deletions