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authorAnish Moorthy <amoorthy@google.com>2024-02-15 23:53:53 +0000
committerSean Christopherson <seanjc@google.com>2024-04-09 14:00:48 -0700
commita3bd2f7ead6d915290c4895ca52f8ee3887cd1ab (patch)
tree8407a230523b8efbaeb9963681e032570c759cd9 /virt
parented2f049fc1445116317c97abb1f2870fb9a14d83 (diff)
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 <amoorthy@google.com> Link: https://lore.kernel.org/r/20240215235405.368539-3-amoorthy@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c2
1 files changed, 2 insertions, 0 deletions
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)