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KVM: Add function comments for __kvm_read/write_guest_page()

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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>
This commit is contained in:
Anish Moorthy 2024-02-15 23:53:53 +00:00 committed by Sean Christopherson
parent ed2f049fc1
commit a3bd2f7ead
1 changed files with 2 additions and 0 deletions
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virt/kvm/kvm_main.c
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@ -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)