From a3bd2f7ead6d915290c4895ca52f8ee3887cd1ab Mon Sep 17 00:00:00 2001 From: Anish Moorthy Date: Thu, 15 Feb 2024 23:53:53 +0000 Subject: 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: Anish Moorthy Link: https://lore.kernel.org/r/20240215235405.368539-3-amoorthy@google.com Signed-off-by: Sean Christopherson --- virt/kvm/kvm_main.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'virt/kvm') diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index b1054d6a14ab..2fad1a5c377a 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -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) -- cgit v1.2.3