KVM: PPC: Add an interface for pinning guest pages in Book3s HV guests

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This adds two new functions, kvmppc_pin_guest_page() and
kvmppc_unpin_guest_page(), and uses them to pin the guest pages where
the guest has registered areas of memory for the hypervisor to update,
(i.e. the per-cpu virtual processor areas, SLB shadow buffers and
dispatch trace logs) and then unpin them when they are no longer
required.

Although it is not strictly necessary to pin the pages at this point,
since all guest pages are already pinned, later commits in this series
will mean that guest pages aren't all pinned.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Paul Mackerras 2011-12-12 12:28:55 +00:00 • committed by Avi Kivity

parent b2b2f16508

commit 93e602490c

3 changed files with 78 additions and 30 deletions

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3

arch/powerpc/include/asm/kvm_book3s.h

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38

arch/powerpc/kvm/book3s_64_mmu_hv.c

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67

arch/powerpc/kvm/book3s_hv.c

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