Re: Support of lguest?

From	Vitaly Kuznetsov <vkuznets@redhat.com>
Newsgroups	linux.kernel
Subject	Re: Support of lguest?
Date	2017-05-15 16:30 +0200
Message-ID	<tHpay-Ra-25@gated-at.bofh.it> (permalink)
References	<tHoRb-KQ-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Juergen Gross <jgross@suse.com> writes:

> Lguest and Xen pv-guests are the only users of pv_mmu_ops (with the
> one exception of the .exit_mmap member, which is being used by Xen
> HVM-guests, too).
>
> As it is possible now to build a kernel without Xen pv-guest support
> while keeping PVH and PVHVM support, I thought about putting most
> pv_mmu_ops functions in #ifdef CONFIG_XEN_HAS_PVMMU sections.

There is an ongoing work to enable PV TLB flushing for Hyper-V guests:
http://driverdev.linuxdriverproject.org/pipermail/driverdev-devel/2017-April/104411.html

it utilizes .flush_tlb_others member in pv_mmu_ops.

hopefully, this work will be merged in 4.13.

-- 
  Vitaly

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Support of lguest? Juergen Gross <jgross@suse.com> - 2017-05-15 16:10 +0200
  Re: Support of lguest? Juergen Gross <jgross@suse.com> - 2017-05-15 16:30 +0200
  Re: Support of lguest? Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-05-15 16:30 +0200

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