diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2022-09-22 07:55:30 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-09-28 10:46:29 +0000 |
| commit | 2a0bd3bffc80d1982cf85cdad066f79a2f60c769 (patch) | |
| tree | a49f217004772fc219460c172779ab9bbd226c54 /BaseTools/Source | |
| parent | 3c0d567c3719675b9d8ecf07c31706d96467e31b (diff) | |
| download | edk2-2a0bd3bffc80d1982cf85cdad066f79a2f60c769.zip edk2-2a0bd3bffc80d1982cf85cdad066f79a2f60c769.tar.gz edk2-2a0bd3bffc80d1982cf85cdad066f79a2f60c769.tar.bz2 | |
OvmfPkg/PlatformInitLib: q35 mtrr setup fix
Traditional q35 memory layout is 2.75 GB of low memory, leaving room
for the pcie mmconfig at 0xb0000000 and the 32-bit pci mmio window at
0xc0000000. Because of that OVMF tags the memory range above
0xb0000000 as uncachable via mtrr.
A while ago qemu started to gigabyte-align memory by default (to make
huge pages more effective) and q35 uses only 2G of low memory in that
case. Which effectively makes the 32-bit pci mmio window start at
0x80000000.
This patch updates the mtrr setup code accordingly.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'BaseTools/Source')
0 files changed, 0 insertions, 0 deletions