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Re: [Qemu-devel] About PC_COMPAT
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From: |
Dr. David Alan Gilbert |
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Subject: |
Re: [Qemu-devel] About PC_COMPAT |
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Date: |
Tue, 22 Mar 2016 12:06:11 +0000 |
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User-agent: |
Mutt/1.5.24 (2015-08-30) |
* 佘旻 (address@hidden) wrote:
> I find PC_COMPAT_X_Y macros in file pc.h, and I don't understand why the
> smaller is the X_Y the more the devices defined? Can someone explain? Thanks!
It's because they're the difference from the current version - so the older
the version the more differences.
So PC_COMPAT_2_5 has no differences, PC_COMPAT_2_4 is 2_5's differences (none)
plus a handful of CPU differences. The PC_COMPAT_2_3 is PC_COMPAT_2_4's
differences
plus a bunch of differences that went in between 2.3 and 2.4.
Dave
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK