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Re: [Qemu-devel] [PATCH 0/5] ahci: enable migration

From: John Snow
Subject: Re: [Qemu-devel] [PATCH 0/5] ahci: enable migration
Date: Tue, 24 Feb 2015 12:55:16 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

On 02/24/2015 12:38 PM, John Snow wrote:
The day we all feared is here, and I am proposing we allow the
migration of the AHCI device. The series that precedes this
which fixes AHCI migration has improved the stability of the
device and as this test series proves, is stable.

I am justifying this checkin based on a series of ping-pong
migration tests I ran under heavy load (using google's stressapptest)
and saw over 300 successful migrations without a single failure.

This series does a few things:
(1) Add migration facilities to libqos
(2) Enable AHCI and ICH9 migration
(3) Add a series of migration tests to ahci-test

This patch has several dependencies:

(1) stefanha/block

Update 2015-02-24: you can just base off of master now.

(2) [PATCH v4 00/17] ide: rerror/werror migration fixes for IDE/ISA and AHCI
(3) [PATCH 0/8] ahci: add more IO tests
(4) [PATCH 0/6] ahci: rerror/werror=stop resume tests

1, 3 and 4 are ahci-test framework dependencies, but 2 actually allows the
AHCI migration to become stable.

John Snow (5):
   libqos: Add migration helpers
   ich9/ahci: Enable Migration
   qtest/ahci: Add migration test
   qtest/ahci: add migrate dma test
   qtest/ahci: add flush migrate test

  hw/ide/ahci.c         |   1 -
  hw/ide/ich.c          |   1 -
  tests/ahci-test.c     | 184 +++++++++++++++++++++++++++++++++++++++++++++++++-
  tests/libqos/ahci.c   |   1 +
  tests/libqos/libqos.c |  75 ++++++++++++++++++++
  tests/libqos/libqos.h |   2 +
  tests/libqos/malloc.c |  74 +++++++++++++++-----
  tests/libqos/malloc.h |   1 +
  8 files changed, 319 insertions(+), 20 deletions(-)

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