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| author | Phil Dennis-Jordan <phil@philjordan.eu> | 2017-03-15 19:20:26 +1300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-05-03 12:29:40 +0200 |
| commit | 77af8a2b95b79699de650965d5228772743efe84 (patch) | |
| tree | 99f42e47728226f4743aa91b234451343d63cebc /qtest.c | |
| parent | e619b14746e5d8c0e53061661fd0e1da01fd4d60 (diff) | |
hw/i386: Use Rev3 FADT (ACPI 2.0) instead of Rev1 to improve guest OS support.
This updates the FADT generated for x86/64 machine types from Revision 1 to 3. (Based on ACPI standard 2.0 instead of 1.0) The intention is to expose the reset register information to guest operating systems which require it, specifically OS X/macOS. Revision 1 FADTs do not contain the fields relating to the reset register.
The new layout and contents remains backwards-compatible with operating systems which only support ACPI 1.0, as the existing fields are not modified by this change, as the 64-bit and 32-bit variants are allowed to co-exist according to the ACPI 2.0 standard. No regressions became apparent in tests with a range of Windows (XP-10) and Linux versions.
The BIOS tables test suite's FADT checksum test has also been updated to reflect the new FADT layout and content.
Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-Id: <1489558827-28971-2-git-send-email-phil@philjordan.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qtest.c')
0 files changed, 0 insertions, 0 deletions