Commit a3bd2f7e authored by Anish Moorthy's avatar Anish Moorthy Committed by Sean Christopherson
Browse files

KVM: Add function comments for __kvm_read/write_guest_page() 



The (gfn, data, offset, len) order of parameters is a little strange
since "offset" applies to "gfn" rather than to "data". Add function
comments to make things perfectly clear.

Signed-off-by: default avatarAnish Moorthy <amoorthy@google.com>
Link: https://lore.kernel.org/r/20240215235405.368539-3-amoorthy@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent ed2f049f

virt/kvm/kvm_main.c

+2 −0
Original line number Diff line number Diff line
@@ -3308,6 +3308,7 @@ static int next_segment(unsigned long len, int offset) 
		return len;

}



/* Copy @len bytes from guest memory at '(@gfn * PAGE_SIZE) + @offset' to @data */

static int __kvm_read_guest_page(struct kvm_memory_slot *slot, gfn_t gfn,

				 void *data, int offset, int len)

{
@@ -3409,6 +3410,7 @@ int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, 
}

EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest_atomic);



/* Copy @len bytes from @data into guest memory at '(@gfn * PAGE_SIZE) + @offset' */

static int __kvm_write_guest_page(struct kvm *kvm,

				  struct kvm_memory_slot *memslot, gfn_t gfn,

			          const void *data, int offset, int len)