diff options
| author | Paul Mackerras <paulus@samba.org> | 2011-12-12 12:31:41 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 14:52:37 +0200 |
| commit | da9d1d7f2875cc8c1ffbce8f3501d0b33f4e7a4d (patch) | |
| tree | a811ee19778715766e720646506311c8fc7d7bd0 /arch/powerpc/include/asm/kvm_host.h | |
| parent | c77162dee7aff6ab5f075da9b60f649cbbeb86cc (diff) | |
KVM: PPC: Allow use of small pages to back Book3S HV guests
This relaxes the requirement that the guest memory be provided as
16MB huge pages, allowing it to be provided as normal memory, i.e.
in pages of PAGE_SIZE bytes (4k or 64k). To allow this, we index
the kvm->arch.slot_phys[] arrays with a small page index, even if
huge pages are being used, and use the low-order 5 bits of each
entry to store the order of the enclosing page with respect to
normal pages, i.e. log_2(enclosing_page_size / PAGE_SIZE).
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_host.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index beb22ba71e26..9252d5e3758d 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -177,14 +177,13 @@ struct revmap_entry { }; /* Low-order bits in kvm->arch.slot_phys[][] */ +#define KVMPPC_PAGE_ORDER_MASK 0x1f #define KVMPPC_GOT_PAGE 0x80 struct kvm_arch { #ifdef CONFIG_KVM_BOOK3S_64_HV unsigned long hpt_virt; struct revmap_entry *revmap; - unsigned long ram_psize; - unsigned long ram_porder; unsigned int lpid; unsigned int host_lpid; unsigned long host_lpcr; |