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KVM: PPC: Book3S HV: Add basic infrastructure for radix guests

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This adds a field in struct kvm_arch and an inline helper to
indicate whether a guest is a radix guest or not, plus a new file
to contain the radix MMU code, which currently contains just a
translate function which knows how to traverse the guest page
tables to translate an address.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Paul Mackerras
2017-01-30 21:21:44 +11:00
committed by Michael Ellerman
parent ef8c640cb9
commit 9e04ba69be
6 changed files with 160 additions and 3 deletions
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2
arch/powerpc/include/asm/kvm_host.h
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@@ -264,6 +264,8 @@ struct kvm_arch {
atomic_t hpte_mod_interest;
cpumask_t need_tlb_flush;
int hpt_cma_alloc;
u8 radix;
pgd_t *pgtable;
u64 process_table;
struct dentry *debugfs_dir;
struct dentry *htab_dentry;