Re: [Bug 1180923] Re: unused memory filled with 0x00 instead of 0xFF

[Yonggang Luo]

I create a issue at https://gitlab.com/qemu-project/qemu/-/issues/1133 to tracking this

On Mon, Aug 1, 2022 at 5:06 AM David Glover <1180923@bugs.launchpad.net> wrote:

I know this is expired but it's still a problem in qemu 7.0.0. For
example, when running MS-DOS 6.22, "mem" reports 0K of upper memory, and
memmaker fails to run, complaining that it could not allocate any. I'd
love to know if there's a workaround.

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https://bugs.launchpad.net/bugs/1180923

Title:
  unused memory filled with 0x00 instead of 0xFF

Status in QEMU:
  Expired

Bug description:
  Qemu, ever since it was made (so, since 2003), has this problem in DOS
  (either PC-DOS or MS-DOS and partly Windows 9x) not recognizing the
  memory available when the memory is filled with 0x00 but when it is
  filled with 0xFF it gets recognized properly, where should I patch
  qemu to solve this memory problem?

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         此致
礼
罗勇刚
Yours
    sincerely,
Yonggang Luo