KVM: Remove obsolete comment about locking for kvm_io_bus_read/write

Nobody is actually calling these functions with slots_lock held, The
srcu_dereference() in kvm_io_bus_read/write() precisely communicates
both what is being protected, and what provides the protection. so the
comments are no longer needed

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://lore.kernel.org/r/20250506012251.2613-1-lirongqing@baidu.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 69782df3617fdebc9c561ec0107a6971e4be5f9a..3a0b1486da316c2891bd2f21e3b214085f27a959 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5765,7 +5765,6 @@ static int __kvm_io_bus_write(struct kvm_vcpu *vcpu, struct kvm_io_bus *bus,
        return -EOPNOTSUPP;
 }
 
-/* kvm_io_bus_write - called under kvm->slots_lock */
 int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
                     int len, const void *val)
 {
@@ -5786,7 +5785,6 @@ int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
 }
 EXPORT_SYMBOL_GPL(kvm_io_bus_write);
 
-/* kvm_io_bus_write_cookie - called under kvm->slots_lock */
 int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
                            gpa_t addr, int len, const void *val, long cookie)
 {
@@ -5836,7 +5834,6 @@ static int __kvm_io_bus_read(struct kvm_vcpu *vcpu, struct kvm_io_bus *bus,
        return -EOPNOTSUPP;
 }
 
-/* kvm_io_bus_read - called under kvm->slots_lock */
 int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
                    int len, void *val)
 {