[Qemu-devel] [Bug 1089996] [NEW] Recent floppy boot regression in qemu-system-i386

[Andreas Gustafsson]

Public bug reported:

In recent versions of qemu-system-i386, booting from an
emulated floppy no longer works.

Using bisection, I have determined that the problem appeared
with the following commit:

  commit 582299336879504353e60c7937fbc70fea93f3da
  Author: Julien Grall <address@hidden>
  Date:   Wed Sep 19 12:50:09 2012 +0100

      hw/dma.c: Replace register_ioport_*

      Replace all register_ioport_*() with the new Memory API functions.
      This permits to use the new Memory stuff like listeners.

      Signed-off-by: Julien Grall <address@hidden>
      Acked-by: Avi Kivity <address@hidden>
      [AF: Rebased onto hwaddr]
      Signed-off-by: Andreas Färber <address@hidden>

One way to reproduce the problem is using the FreeDOS floppy image
listed on http://wiki.qemu.org/Testing, by running

  wget http://odin.fdos.org/odin2005/odin1440.img
  qemu-system-i386 -fda odin1440.img

This successfully boots FreeDOS in qemu version
258711c6448c44b60b0fecef1d3b09c71e23e304, but not
in version 582299336879504353e60c7937fbc70fea93f3da
or newer.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1089996

Title:
   Recent floppy boot regression in qemu-system-i386

Status in QEMU:
  New

Bug description:
  In recent versions of qemu-system-i386, booting from an
  emulated floppy no longer works.

  Using bisection, I have determined that the problem appeared
  with the following commit:

    commit 582299336879504353e60c7937fbc70fea93f3da
    Author: Julien Grall <address@hidden>
    Date:   Wed Sep 19 12:50:09 2012 +0100

        hw/dma.c: Replace register_ioport_*

        Replace all register_ioport_*() with the new Memory API functions.
        This permits to use the new Memory stuff like listeners.

        Signed-off-by: Julien Grall <address@hidden>
        Acked-by: Avi Kivity <address@hidden>
        [AF: Rebased onto hwaddr]
        Signed-off-by: Andreas Färber <address@hidden>

  One way to reproduce the problem is using the FreeDOS floppy image
  listed on http://wiki.qemu.org/Testing, by running

    wget http://odin.fdos.org/odin2005/odin1440.img
    qemu-system-i386 -fda odin1440.img

  This successfully boots FreeDOS in qemu version
  258711c6448c44b60b0fecef1d3b09c71e23e304, but not
  in version 582299336879504353e60c7937fbc70fea93f3da
  or newer.

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