[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 2/2] target-i386: automatically raise cpuid leve
From: |
Radim Krčmář |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] target-i386: automatically raise cpuid level to 0xd |
Date: |
Fri, 19 Jun 2015 11:54:58 +0200 |
2015-06-19 11:47+0200, Radim Krčmář:
> 2015-06-18 12:50-0300, Eduardo Habkost:
> > I have considered introducing "min-[x]level" and "max-{x]level"
> > properties to control automatic increasing of level/xlevel. The existing
> > X86CPUDefinition.level field could just control min_level, while
> > explicit "level=" on the command-line or config file would explicitly
> > force a specific value. Probably setting "max-level" on machine-type
> > compat code would be enough to restore the previous behavior.
>
> We'd need to set min-level at least to 7, to capture the raising we do
^^^^^^^^^
Should have been max-level.
(The alcohol level doesn't drop fast enough.)
> now, but a feature in level between default and 7 would result in a
> different behavior, so we need to make it much uglier :/
> We can add 'compat-level' bit for old machine types and raise to highest
> habited function otherwise, optionally with controls you described.
[Qemu-devel] [PATCH 1/2] target-i386: emulate CPUID level of real hardware, Radim Krčmář, 2015/06/18