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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2013-07-02 11:15:16 +0530 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-07-08 16:19:58 +0200 |
| commit | fa61a4e376d2129690c82dfb05b31705a67d6e0b (patch) | |
| tree | 549f4aaad63f0b18e60e059681144256a8cb2be7 /arch/powerpc/include/asm/kvm_book3s_64.h | |
| parent | f35320288c5306ddbcb5ecac046b73519837299c (diff) | |
| download | blackbird-op-linux-fa61a4e376d2129690c82dfb05b31705a67d6e0b.tar.gz blackbird-op-linux-fa61a4e376d2129690c82dfb05b31705a67d6e0b.zip | |
powerpc/kvm: Contiguous memory allocator based hash page table allocation
Powerpc architecture uses a hash based page table mechanism for mapping virtual
addresses to physical address. The architecture require this hash page table to
be physically contiguous. With KVM on Powerpc currently we use early reservation
mechanism for allocating guest hash page table. This implies that we need to
reserve a big memory region to ensure we can create large number of guest
simultaneously with KVM on Power. Another disadvantage is that the reserved memory
is not available to rest of the subsystems and and that implies we limit the total
available memory in the host.
This patch series switch the guest hash page table allocation to use
contiguous memory allocator.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 9c1ff330c805..f8355a902ac5 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -37,7 +37,6 @@ static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu) #ifdef CONFIG_KVM_BOOK3S_64_HV #define KVM_DEFAULT_HPT_ORDER 24 /* 16MB HPT by default */ -extern int kvm_hpt_order; /* order of preallocated HPTs */ #endif #define VRMA_VSID 0x1ffffffUL /* 1TB VSID reserved for VRMA */ |
