From: Peter Lieven <pl@kamp.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org, "Benoît Canet" <benoit@irqsave.net>
Subject: Re: [Qemu-devel] [PULL 11/13] target-i386: forward CPUID cache leaves when -cpu host is used
Date: Tue, 19 Nov 2013 12:42:15 +0100 [thread overview]
Message-ID: <528B4E97.7020904@kamp.de> (raw)
In-Reply-To: <528B4D70.2050403@redhat.com>
On 19.11.2013 12:37, Paolo Bonzini wrote:
> Il 19/11/2013 12:35, Peter Lieven ha scritto:
>> next question: is cache leaf forwarding a migration blocker?
> "-cpu host" in general is "interesting" at migration time, so I would
> say no.
It works for for a long time as long as all cpu features that are supported on the source
are also supported on the destination.
As for the cache leaves feature I would go for making it a optional parameter. If we
woudl want to support it, we need to adjust several cpuid indexes to reflect the emulated
cpu topology. Question would be to what extend the cache information would then
make sense. Or with other words if one wants to use cache leaf pass-thru the topology
must match the physical one?
Peter
next prev parent reply other threads:[~2013-11-19 11:42 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-20 16:24 [Qemu-devel] [PULL 00/13] KVM patches for 2013-09-20 Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 01/13] exec: always use MADV_DONTFORK Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 02/13] cpu: Move cpu state syncs up into cpu_dump_state() Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 03/13] kvm: warn if num cpus is greater than num recommended Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 04/13] fix steal time MSR vmsd callback to proper opaque type Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 05/13] kvm irqfd: support direct msimessage to irq translation Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 06/13] kvmvapic: Catch invalid ROM size Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 07/13] kvmvapic: Enter inactive state on hardware reset Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 08/13] kvmvapic: Clear also physical ROM address when entering INACTIVE state Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 09/13] kvm: fix traces to use %x instead of %d Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 10/13] linux-headers: update to 3.11 Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 11/13] target-i386: forward CPUID cache leaves when -cpu host is used Paolo Bonzini
2013-11-18 15:23 ` Peter Lieven
2013-11-18 15:37 ` Peter Lieven
2013-11-18 16:11 ` Paolo Bonzini
2013-11-18 19:53 ` Peter Lieven
2013-11-19 10:50 ` Paolo Bonzini
2013-11-19 11:35 ` Peter Lieven
2013-11-19 11:37 ` Paolo Bonzini
2013-11-19 11:42 ` Peter Lieven [this message]
2013-11-19 10:25 ` Peter Lieven
2013-11-19 10:47 ` Paolo Bonzini
2013-11-19 11:07 ` Peter Lieven
2013-11-19 12:03 ` Peter Lieven
2013-11-19 12:08 ` Peter Lieven
2013-11-19 12:14 ` Paolo Bonzini
2013-11-19 12:32 ` Peter Lieven
2013-11-19 13:21 ` Paolo Bonzini
2013-11-19 14:11 ` Peter Lieven
2013-11-19 14:14 ` Paolo Bonzini
2013-11-19 14:17 ` Peter Lieven
2013-11-19 14:19 ` Paolo Bonzini
2013-11-19 14:46 ` Peter Lieven
2013-11-19 14:57 ` Paolo Bonzini
2013-11-19 15:05 ` Peter Lieven
2013-11-19 15:11 ` Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 12/13] linux-headers: update to 3.12-rc1 Paolo Bonzini
2013-09-20 16:24 ` [Qemu-devel] [PULL 13/13] target-i386: add feature kvm_pv_unhalt Paolo Bonzini
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