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xen-devel
Re: [Xen-devel] [PATCH 10/24] xen: mask XSAVE from cpuid
>>> Arjan van de Ven <arjan@xxxxxxxxxxxxx> 16.03.09 01:09 >>>
>Well.. pretty much all new instructions need Xen modifications due to
>the need to be emulate to deal with traps/vmexits/etc right?
>So I don't quite see many cpuid bits that would NOT involve some Xen
>modification or another ;)
No, new (user-mode accessible) instructions represent precisely the kind
of extension that do not require hypervisor (or OS) awareness (see SSE2
etc, AES, FMA). New registers otoh are examples of where awareness is
needed (SSE, AVX), as would be new privileged instructions.
Jan
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- [Xen-devel] [PATCH 05/24] xen: clean up xen_load_gdt, (continued)
- [Xen-devel] [PATCH 05/24] xen: clean up xen_load_gdt, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 12/24] x86-64: remove PGE from must-have feature list, Jeremy Fitzhardinge
- [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
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