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KVM: PPC: Book3S HV: Allow passthrough of an emulated device to an L3 guest
authorSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Fri, 14 Dec 2018 05:29:10 +0000 (16:29 +1100)
committerPaul Mackerras <paulus@ozlabs.org>
Mon, 17 Dec 2018 00:33:50 +0000 (11:33 +1100)
commit95d386c2d2e7660a6447df1507a9845665dab7d8
tree1edc519ea053d78a419382ea386eec212bd60b1etree
parent6ff887b8bd0d820d9f3371c0ce093d96b73035d6commit | diff
KVM: PPC: Book3S HV: Allow passthrough of an emulated device to an L3 guest

Previously when a device was being emulated by an L1 guest for an L2
guest, that device couldn't then be passed through to an L3 guest. This
was because the L1 guest had no method for accessing L3 memory.

The hcall H_COPY_TOFROM_GUEST provides this access. Thus this setup for
passthrough can now be allowed.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
arch/powerpc/kvm/book3s_64_mmu_radix.c diff | blob | history
arch/powerpc/kvm/book3s_hv_nested.c diff | blob | history
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