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Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C
From: |
Eduardo Habkost |
Subject: |
Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C |
Date: |
Mon, 10 Sep 2012 12:07:50 -0300 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Sep 10, 2012 at 04:58:39PM +0200, Andreas Färber wrote:
> Am 10.09.2012 16:50, schrieb Don Slutz:
> > On 09/10/12 09:04, Igor Mammedov wrote:
> >> But question unrelated to this patch is still stand if ia64 is valid
> >> bit for
> >> 01.EDX[30]?
> >>
> >>
> > Intel® Processor Identification
> > and the CPUID Instruction
> > Application Note 485
> > January 2006
> >
> > Order Number: 241618-030
> >
> > ...
> >
> > Updated Table 3-5 to include the feature flag definition (EDX[30]) for
> > IA64 capabilities.
> > ...
> > 30 IA64 IA64 Capabilities The processor is a member of the Intel®
> > Itanium® processor family
> > and currently operating in IA32 emulation mode.
> >
> > ---------------
> >
> > Says that it is. Along with http://en.wikipedia.org/wiki/CPUID and
> > http://www.sandpile.org/x86/cpuid.htm#level_0000_0001h (IA-64)
>
> Don't those semantics contradict the use in qemu-system-x86_64 or
> qemu-system-i386 rather than qemu-system-ia64 then? We don't model ia64
> CPUs here (just like we don't model ppc64 CPUs in ppc) so the flag could
> never become 1 IIUC.
Correct, and the bit is always filtered out on both TCG and KVM modes.
The name is in the table because we know the name/meaning of that
feature bit, but it's impossible to enable it.
That said, I don't mind removing it from the table just to avoid
confusion, but I also wouldn't mind keeping it (as it's harmless).
--
Eduardo
- [Qemu-devel] [PATCH 1/7] target-i386: Fold -cpu ?cpuid, ?model output into -cpu help, drop ?dump, (continued)
- [Qemu-devel] [PATCH 1/7] target-i386: Fold -cpu ?cpuid, ?model output into -cpu help, drop ?dump, Eduardo Habkost, 2012/09/05
- [Qemu-devel] [PATCH 7/7] i386: kill cpudef config section support, Eduardo Habkost, 2012/09/05
- [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Eduardo Habkost, 2012/09/05
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Igor Mammedov, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Igor Mammedov, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Igor Mammedov, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Don Slutz, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Andreas Färber, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C,
Eduardo Habkost <=
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Andreas Färber, 2012/09/10
- Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Eduardo Habkost, 2012/09/10
Re: [Qemu-devel] [PATCH 4/7] move CPU models from cpus-x86_64.conf to C, Igor Mammedov, 2012/09/10
[Qemu-devel] [PATCH 2/7] Drop cpu_list_id macro, Eduardo Habkost, 2012/09/05
[Qemu-devel] [PATCH 5/7] eliminate cpus-x86_64.conf file, Eduardo Habkost, 2012/09/05
[Qemu-devel] [PATCH 6/7] x86_cpudef_setup: coding style change, Eduardo Habkost, 2012/09/05