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.
Signed-off-by: Marc Orr <marcorr@xxxxxxxxxx>
---
include/linux/kvm_host.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 6930c63126c7..cf7b6a3a4197 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -19,6 +19,7 @@
#include <linux/preempt.h>
#include <linux/msi.h>
#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <linux/rcupdate.h>
#include <linux/ratelimit.h>
#include <linux/err.h>
@@ -810,12 +811,12 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
#ifndef __KVM_HAVE_ARCH_VM_ALLOC
static inline struct kvm *kvm_arch_alloc_vm(void)
{
- return kzalloc(sizeof(struct kvm), GFP_KERNEL);
+ return vzalloc(sizeof(struct kvm));
}
static inline void kvm_arch_free_vm(struct kvm *kvm)
{
- kfree(kvm);
+ vfree(kvm);
}
#endif
--
2.17.0.484.g0c8726318c-goog
