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| author | David Gibson <david@gibson.dropbear.id.au> | 2016-12-20 08:49:01 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2017-01-31 13:59:34 +0300 |
| commit | 3d089f84c6f9b7b0eda993142d73961a44b553d2 (patch) | |
| tree | 12cbc4acb07a6b979e0869785c10b7461324d5c8 /arch/powerpc/include/asm/kvm_book3s_64.h | |
| parent | 3f9d4f5a5f35e402e91bedf0c15e29cef187a29d (diff) | |
| download | linux-3d089f84c6f9b7b0eda993142d73961a44b553d2.tar.xz | |
KVM: PPC: Book3S HV: Don't store values derivable from HPT order
Currently the kvm_hpt_info structure stores the hashed page table's order,
and also the number of HPTEs it contains and a mask for its size. The
last two can be easily derived from the order, so remove them and just
calculate them as necessary with a couple of helper inlines.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 0db010cc4e65..ecc3b33bcc59 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -356,6 +356,18 @@ extern void kvmppc_mmu_debugfs_init(struct kvm *kvm); extern void kvmhv_rm_send_ipi(int cpu); +static inline unsigned long kvmppc_hpt_npte(struct kvm_hpt_info *hpt) +{ + /* HPTEs are 2**4 bytes long */ + return 1UL << (hpt->order - 4); +} + +static inline unsigned long kvmppc_hpt_mask(struct kvm_hpt_info *hpt) +{ + /* 128 (2**7) bytes in each HPTEG */ + return (1UL << (hpt->order - 7)) - 1; +} + #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ #endif /* __ASM_KVM_BOOK3S_64_H__ */ |