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[Bug 1767146] Re: No ACPI-table found, option -M 1.6 not found either


From: Launchpad Bug Tracker
Subject: [Bug 1767146] Re: No ACPI-table found, option -M 1.6 not found either
Date: Sun, 10 Jan 2021 04:17:36 -0000

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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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:
  Expired

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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