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Commit 6104f472 authored by Alex Williamson's avatar Alex Williamson Committed by Marcelo Tosatti
Browse files

KVM: struct kvm_memory_slot.flags -> u32 



struct kvm_userspace_memory_region.flags is a u32 with a comment that
bits 0 ~ 15 are visible to userspace and the other bits are reserved
for kvm internal use.  KVM_MEMSLOT_INVALID is the only internal use
flag and it has a comment that bits 16 ~ 31 are internally used and
the other bits are visible to userspace.

Therefore, let's define this as a u32 so we don't waste bytes on LP64
systems.  Move to the end of the struct for alignment.

Reviewed-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent f82a8cfe

include/linux/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -266,10 +266,10 @@ static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) 
struct kvm_memory_slot {

	gfn_t base_gfn;

	unsigned long npages;

	unsigned long flags;

	unsigned long *dirty_bitmap;

	struct kvm_arch_memory_slot arch;

	unsigned long userspace_addr;

	u32 flags;

	int id;

	bool user_alloc;

};