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xen-devel
Re: [Xen-devel] [PATCH 10/24] xen: mask XSAVE from cpuid
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To: |
"Andi Kleen" <andi@xxxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH 10/24] xen: mask XSAVE from cpuid |
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From: |
"Jan Beulich" <jbeulich@xxxxxxxxxx> |
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Date: |
Tue, 17 Mar 2009 10:55:35 +0000 |
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Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Arjan van de Ven <arjan@xxxxxxxxxxxxx> |
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Tue, 17 Mar 2009 03:55:17 -0700 |
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>>> Andi Kleen <andi@xxxxxxxxxxxxxx> 17.03.09 11:48 >>>
>> No, properly coded xsave support will (hopefully) make user-visible context
>> extensions transparent to hypervisor and OS. But I was giving a general
>> example here, and the change from xmm to ymm registers is one that does
>> need hypervisor (and OS) changes.
>
>Again except for XSAVE support it doesn't, does it?
No, it shouldn't (minus the valid comments hpa added in another reply).
Jan
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- [Xen-devel] Re: [PATCH 12/24] x86-64: remove PGE from must-have feature list, (continued)
[Xen-devel] [PATCH 08/24] xen: reserve i386 Xen pagetables, Jeremy Fitzhardinge
[Xen-devel] [PATCH 09/24] NULL noise: arch/x86/xen/smp.c, Jeremy Fitzhardinge
[Xen-devel] [PATCH 10/24] xen: mask XSAVE from cpuid, Jeremy Fitzhardinge
[Xen-devel] [PATCH 13/24] Xen: Add virt_to_pfn helper function, Jeremy Fitzhardinge
[Xen-devel] [PATCH 11/24] xen: add FIX_TEXT_POKE to fixmap, Jeremy Fitzhardinge
[Xen-devel] [PATCH 14/24] xen: add irq_from_evtchn, Jeremy Fitzhardinge
[Xen-devel] [PATCH 18/24] xen: add "capabilities" file, Jeremy Fitzhardinge
[Xen-devel] [PATCH 17/24] xen/dev-evtchn: clean up locking in evtchn, Jeremy Fitzhardinge
[Xen-devel] [PATCH 16/24] xen: export ioctl headers to userspace, Jeremy Fitzhardinge
[Xen-devel] [PATCH 15/24] xen: add /dev/xen/evtchn driver, Jeremy Fitzhardinge
[Xen-devel] [PATCH 21/24] xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet, Jeremy Fitzhardinge
[Xen-devel] [PATCH 20/24] xen/sys/hypervisor: change writable_pt to features, Jeremy Fitzhardinge
[Xen-devel] [PATCH 19/24] xen: add /sys/hypervisor support, Jeremy Fitzhardinge
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