Commit e009dce1 authored by Quentin Perret's avatar Quentin Perret Committed by Marc Zyngier
Browse files

KVM: arm64: Introduce addr_is_memory() 



Introduce a helper usable in nVHE protected mode to check whether a
physical address is in a RAM region or not.

Signed-off-by: default avatarQuentin Perret <qperret@google.com>
Reviewed-by: default avatarFuad Tabba <tabba@google.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210809152448.1810400-16-qperret@google.com
parent 2d77e238

arch/arm64/kvm/hyp/include/nvhe/mem_protect.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ extern const u8 pkvm_hyp_id; 
int __pkvm_prot_finalize(void);

int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end);



bool addr_is_memory(phys_addr_t phys);

int host_stage2_idmap_locked(phys_addr_t addr, u64 size, enum kvm_pgtable_prot prot);

int host_stage2_set_owner_locked(phys_addr_t addr, u64 size, u8 owner_id);

int kvm_host_prepare_stage2(void *pgt_pool_base);

arch/arm64/kvm/hyp/nvhe/mem_protect.c

+7 −0
Original line number Diff line number Diff line
@@ -197,6 +197,13 @@ static bool find_mem_range(phys_addr_t addr, struct kvm_mem_range *range) 
	return false;

}



bool addr_is_memory(phys_addr_t phys)

{

	struct kvm_mem_range range;



	return find_mem_range(phys, &range);

}



static bool range_is_memory(u64 start, u64 end)

{

	struct kvm_mem_range r1, r2;