The order of parameters in these function signature is a little strange,
with "offset" actually applying to "gfn" rather than to "data". Add
short comments to make things perfectly clear.
Signed-off-by: Anish Moorthy <amoorthy@xxxxxxxxxx>
---
virt/kvm/kvm_main.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 09d4d85691e1..d9c0fa7c907f 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2984,6 +2984,9 @@ 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)
{
@@ -3085,6 +3088,9 @@ 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)
--
2.41.0.rc0.172.g3f132b7071-goog
