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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2014-09-29 12:02:38 +0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-29 17:36:33 +0400 |
| commit | cec26bc3c125b5dd12a02f04133cd91eae3f1622 (patch) | |
| tree | 6b04348df5a567b246dbf3e63143c0652ad2b3df /arch/powerpc/kvm/book3s_hv_builtin.c | |
| parent | e77d99d4a4ec761ad061f1ec890c71040a92efe3 (diff) | |
| download | linux-cec26bc3c125b5dd12a02f04133cd91eae3f1622.tar.xz | |
KVM: PPC: BOOK3S: HV: CMA: Reserve cma region only in hypervisor mode
We use cma reserved area for creating guest hash page table.
Don't do the reservation in non-hypervisor mode. This avoids unnecessary
CMA reservation when booting with limited memory configs like
fadump and kdump.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_builtin.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_builtin.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index b9615ba5b083..4fdc27c80f4c 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -163,6 +163,12 @@ void __init kvm_cma_reserve(void) unsigned long align_size; struct memblock_region *reg; phys_addr_t selected_size = 0; + + /* + * We need CMA reservation only when we are in HV mode + */ + if (!cpu_has_feature(CPU_FTR_HVMODE)) + return; /* * We cannot use memblock_phys_mem_size() here, because * memblock_analyze() has not been called yet. |