Messages in this thread | | | Date | Wed, 12 May 2021 15:18:57 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC v2 01/32] x86/paravirt: Introduce CONFIG_PARAVIRT_XL |
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On Mon, May 10, 2021 at 05:56:05PM +0200, Juergen Gross wrote:
> No. We have PARAVIRT_XXL for Xen PV guests, and we have PARAVIRT for > other hypervisor's guests, supporting basically the TLB flush operations > and time related operations only. Adding the halt related operations to > PARAVIRT wouldn't break anything.
Also, I don't think anything modern should actually ever hit any of the HLT instructions, most everything should end up at an MWAIT.
Still, do we wants to give arch_safe_halt() and halt() the PVOP_ALT_VCALL0() treatment?
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