On Mon, May 07, 2018 at 03:18:46PM -0700, Marc Orr wrote: > The kvm struct is (currently) tens of kilo-bytes, which turns out to be a > large amount of memory to allocate contiguously via kzalloc. Thus, this > patch changes the kzalloc to a vzalloc, so that the memory allocation is > less likely to fail in resource-constrained environments. This will break HV KVM on powerpc, which needs the KVM struct to be physically contiguous and in the linear mapping. We'll need to add #define __KVM_HAVE_ARCH_VM_ALLOC to arch/powerpc/include/asm/kvm_host.h and the kzalloc/kfree variant to arch/powerpc/kvm/powerpc.c much like you did on arm. Paul.
