Comments (4)
RAM is mapped between 0 and 0x3fffffff, so the maximum is 1024 Mib,
ROM is between 0x40000000 and 0x4fffffff,
I/O starts at 0x5000000, which is 1280 MiB and explains the assertion crash.
So we may limit to 1024 MiB at QEMU level.
I don't know why we can't use the last 24 MiB, but I suspect a problem in the kernel.
from qemu-m68k.
We have an hint in the kernel logs:
ABCFGHIJK
Linux version 5.4.0-rc4-mac-17620-g8d7828aa2b90 (laurent@quad) (gcc version 9.2.1 20190827 (Red Hat Cross 9.2.1-1) (GCC)) #31 Fri Oct 25 18:35:50 CEST 2019
Saving 128 bytes of bootinfo
Detected Macintosh model: 35
Apple Macintosh Quadra 800
Built 1 zonelists, mobility grouping on. Total pages: 259840
259840 * 4 kiB / 1 MiB = 1015 MiB
from qemu-m68k.
@vivier I think we can close this issue now as this is a hardware limitation, nothing that qemu can change if it emulates a Quadra 800. And since we have the new m68k-virt
machine that allows up to 3.2 GB of RAM, the RAM size limitation no longer exists in qemu-m68k.
from qemu-m68k.
@vivier I think we can close this issue now as this is a hardware limitation, nothing that qemu can change if it emulates a Quadra 800. And since we have the new
m68k-virt
machine that allows up to 3.2 GB of RAM, the RAM size limitation no longer exists in qemu-m68k.
Yes, and moreover I think the bug is in the kernel
from qemu-m68k.
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from qemu-m68k.