Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable'

[platform/kernel/linux-starfive.git] / fs / userfaultfd.c

diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index e943370..de86f5b 100644 (file)
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -192,17 +192,19 @@ static inline void msg_init(struct uffd_msg *msg)
 }
 
 static inline struct uffd_msg userfault_msg(unsigned long address,
+                                           unsigned long real_address,
                                            unsigned int flags,
                                            unsigned long reason,
                                            unsigned int features)
 {
        struct uffd_msg msg;
+
        msg_init(&msg);
        msg.event = UFFD_EVENT_PAGEFAULT;
 
-       if (!(features & UFFD_FEATURE_EXACT_ADDRESS))
-               address &= PAGE_MASK;
-       msg.arg.pagefault.address = address;
+       msg.arg.pagefault.address = (features & UFFD_FEATURE_EXACT_ADDRESS) ?
+                                   real_address : address;
+
        /*
         * These flags indicate why the userfault occurred:
         * - UFFD_PAGEFAULT_FLAG_WP indicates a write protect fault.
@@ -488,8 +490,8 @@ vm_fault_t handle_userfault(struct vm_fault *vmf, unsigned long reason)
 
        init_waitqueue_func_entry(&uwq.wq, userfaultfd_wake_function);
        uwq.wq.private = current;
-       uwq.msg = userfault_msg(vmf->real_address, vmf->flags, reason,
-                       ctx->features);
+       uwq.msg = userfault_msg(vmf->address, vmf->real_address, vmf->flags,
+                               reason, ctx->features);
        uwq.ctx = ctx;
        uwq.waken = false;