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[Bug 1869426] Re: 5.0rc0->4.2 serial migraiton


From: Laurent Vivier
Subject: [Bug 1869426] Re: 5.0rc0->4.2 serial migraiton
Date: Thu, 30 Apr 2020 13:44:44 -0000

Fixed here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=f602d047ac21


** Changed in: qemu
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1869426

Title:
  5.0rc0->4.2 serial migraiton

Status in QEMU:
  Fix Released

Bug description:
  Migrating from 5.0rc0->4.2 with pc-q35-4.2 we get an error:

  Unknown savevm section or instance 'serial' 1

  dumping the migration streams it looks like 5.0 is duplicating the
  serial migration data:

      "serial (26)": {
          "divider": "0x000c",
          "rbr": "0x00",
          "ier": "0x00",
          "iir": "0x01",
          "lcr": "0x00",
          "mcr": "0x00",
          "lsr": "0x60",
          "msr": "0xb0",
          "scr": "0x00",
          "fcr_vmstate": "0x00"
      },
      "serial (27)": {
          "state": {
              "divider": "0x000c",
              "rbr": "0x00",
              "ier": "0x00",
              "iir": "0x01",
              "lcr": "0x00",
              "mcr": "0x00",
              "lsr": "0x60",
              "msr": "0xb0",
              "scr": "0x00",
              "fcr_vmstate": "0x00"
          }
      },

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