]> git.baikalelectronics.ru Git - kernel.git/commit
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)
commit89037a334d9deacf49bb3617935f1dbba8442863
tree1edc519ea053d78a419382ea386eec212bd60b1e
parent504802d966b57aaa43453bd3a4a05d5f0149d24b
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
arch/powerpc/kvm/book3s_hv_nested.c