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KVM: MMU: Allow long mode shadows for legacy page tables

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Currently the KVM softmmu implementation can not shadow a 32
bit legacy or PAE page table with a long mode page table.
This is a required feature for nested paging emulation
because the nested page table must alway be in host format.
So this patch implements the missing pieces to allow long
mode page tables for page table types.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2010-09-10 17:31:00 +02:00
committed by Avi Kivity
parent 651dd37a9c
commit 81407ca553
2 changed files with 53 additions and 8 deletions
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arch/x86/include/asm/kvm_host.h
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@@ -256,6 +256,7 @@ struct kvm_mmu {
bool direct_map;
u64 *pae_root;
u64 *lm_root;
u64 rsvd_bits_mask[2][4];
u64 pdptrs[4]; /* pae */