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authorMarc Orr <marcorr@google.com>2018-05-15 04:37:37 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2018-06-01 19:18:26 +0200
commitd1e5b0e98ea27b4f17871dc4e8ea4b0447e35221 (patch)
treeb0e6a402dc55ae6809456f40b690360cc8b687ca /virt/kvm/kvm_main.c
parent1499fa809e9e6713952ef84a7e9d51606881681f (diff)
downloadlinux-d1e5b0e98ea27b4f17871dc4e8ea4b0447e35221.tar.gz
kvm: Make VM ioctl do valloc for some archs
The kvm struct has been bloating. For example, it's tens of kilo-bytes for x86, which turns out to be a large amount of memory to allocate contiguously via kzalloc. Thus, this patch does the following: 1. Uses architecture-specific routines to allocate the kvm struct via vzalloc for x86. 2. Switches arm to __KVM_HAVE_ARCH_VM_ALLOC so that it can use vzalloc when has_vhe() is true. Other architectures continue to default to kalloc, as they have a dependency on kalloc or have a small-enough struct kvm. Signed-off-by: Marc Orr <marcorr@google.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
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