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[Qemu-devel] [Bug 1767146] Re: No ACPI-table found, option -M 1.6 not fo
From: |
Maximilian W |
Subject: |
[Qemu-devel] [Bug 1767146] Re: No ACPI-table found, option -M 1.6 not found either |
Date: |
Thu, 26 Apr 2018 16:07:48 -0000 |
** Attachment added: "juxtaposition of two VMs running the same kernel
(different amounts of memory)"
https://bugs.launchpad.net/qemu/+bug/1767146/+attachment/5127733/+files/Auswahl_364.png
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https://bugs.launchpad.net/bugs/1767146
Title:
No ACPI-table found, option -M 1.6 not found either
Status in QEMU:
New
Bug description:
Currently writing a small kernel, when trying to detect memory blocks
that contain ACPI information, no such block is found. When ran in
Oracle Virtualbox, code runs flawlessly.
Code that is detecting the ACPI-Info (with a bit of debug-output):
```
multiboot_memory_map32_t* map = (multiboot_memory_map32_t*)mmap;
for (uint32_t i = 0; i < size; i++) {
Termutils::cout << map[i].type << "type of block ";
if (mmap[i].type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
Termutils::cout << "WE ARE INSIDE\n";
fadt = (FADT*)(map[i].base_addr_low);
}
if (i % 9 == 0) {
Termutils::cout << "\n";
}
}
```
command qemu is run with:
qemu-img create build/objects/test 500M
qemu-system-i386 -hda $(APP_DIR)/clinl.iso -hdb ./build/objects/test
The iso-image is (zipped) included as attachment.
qemu-system-i386 --version:
QEMU emulator version 2.10.1(qemu-2.10.1-3.fc27)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
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