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Commit 93a5cef0 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
Browse files

KVM: introduce KVM_MEM_SLOTS_NUM macro 



Introduce KVM_MEM_SLOTS_NUM macro to instead of
KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent ff227392

arch/x86/include/asm/kvm_host.h

+3 −1
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 
#define KVM_MEMORY_SLOTS 32

/* memory slots that does not exposed to userspace */

#define KVM_PRIVATE_MEM_SLOTS 4

#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)



#define KVM_MMIO_SIZE 16



#define KVM_PIO_PAGE_OFFSET 1
@@ -228,7 +230,7 @@ struct kvm_mmu_page { 
	 * One bit set per slot which has memory

	 * in this shadow page.

	 */

	DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);

	DECLARE_BITMAP(slot_bitmap, KVM_MEM_SLOTS_NUM);

	bool unsync;

	int root_count;          /* Currently serving as active root */

	unsigned int unsync_children;

arch/x86/kvm/mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -1349,7 +1349,7 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, 
						  PAGE_SIZE);

	set_page_private(virt_to_page(sp->spt), (unsigned long)sp);

	list_add(&sp->link, &vcpu->kvm->arch.active_mmu_pages);

	bitmap_zero(sp->slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);

	bitmap_zero(sp->slot_bitmap, KVM_MEM_SLOTS_NUM);

	sp->parent_ptes = 0;

	mmu_page_add_parent_pte(vcpu, sp, parent_pte);

	kvm_mod_used_mmu_pages(vcpu->kvm, +1);

include/linux/kvm_host.h

+5 −2
Original line number Diff line number Diff line
@@ -227,11 +227,14 @@ struct kvm_irq_routing_table {}; 


#endif



#ifndef KVM_MEM_SLOTS_NUM

#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)

#endif



struct kvm_memslots {

	int nmemslots;

	u64 generation;

	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +

					KVM_PRIVATE_MEM_SLOTS];

	struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];

};



struct kvm {

virt/kvm/kvm_main.c

+1 −1
Original line number Diff line number Diff line
@@ -663,7 +663,7 @@ int __kvm_set_memory_region(struct kvm *kvm, 
			(void __user *)(unsigned long)mem->userspace_addr,

			mem->memory_size)))

		goto out;

	if (mem->slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)

	if (mem->slot >= KVM_MEM_SLOTS_NUM)

		goto out;

	if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)

		goto out;