remove unnecessary casts from uintptr_t

uintptr_t, or unsigned long which is equivalent on Linux I32LP64 systems,
is an unsigned type and there is no need to further cast to __u64 which is
another unsigned integer type; widening casts from unsigned integers
zero-extend the value.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

block/io_uring.c

@@ -102,7 +102,7 @@ static void luring_resubmit_short_read(LuringState *s, LuringAIOCB *luringcb,
 
     /* Update sqe */
     luringcb->sqeq.off += nread;
-    luringcb->sqeq.addr = (__u64)(uintptr_t)luringcb->resubmit_qiov.iov;
+    luringcb->sqeq.addr = (uintptr_t)luringcb->resubmit_qiov.iov;
     luringcb->sqeq.len = luringcb->resubmit_qiov.niov;
 
     luring_resubmit(s, luringcb);

hw/vfio/common.c

@@ -1000,7 +1000,7 @@ vfio_device_feature_dma_logging_start_create(VFIOContainerBase *bcontainer,
         return NULL;
     }
 
-    control->ranges = (__u64)(uintptr_t)ranges;
+    control->ranges = (uintptr_t)ranges;
     if (tracking->max32) {
         ranges->iova = tracking->min32;
         ranges->length = (tracking->max32 - tracking->min32) + 1;
@@ -1126,7 +1126,7 @@ static int vfio_device_dma_logging_report(VFIODevice *vbasedev, hwaddr iova,
     report->iova = iova;
     report->length = size;
     report->page_size = qemu_real_host_page_size();
-    report->bitmap = (__u64)(uintptr_t)bitmap;
+    report->bitmap = (uintptr_t)bitmap;
 
     feature->argsz = sizeof(buf);
     feature->flags = VFIO_DEVICE_FEATURE_GET |

target/i386/sev.c

@@ -167,7 +167,7 @@ sev_ioctl(int fd, int cmd, void *data, int *error)
 
     input.id = cmd;
     input.sev_fd = fd;
-    input.data = (__u64)(unsigned long)data;
+    input.data = (uintptr_t)data;
 
     r = kvm_vm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_OP, &input);
 
@@ -240,7 +240,7 @@ sev_ram_block_added(RAMBlockNotifier *n, void *host, size_t size,
         return;
     }
 
-    range.addr = (__u64)(unsigned long)host;
+    range.addr = (uintptr_t)host;
     range.size = max_size;
 
     trace_kvm_memcrypt_register_region(host, max_size);
@@ -270,7 +270,7 @@ sev_ram_block_removed(RAMBlockNotifier *n, void *host, size_t size,
         return;
     }
 
-    range.addr = (__u64)(unsigned long)host;
+    range.addr = (uintptr_t)host;
     range.size = max_size;
 
     trace_kvm_memcrypt_unregister_region(host, max_size);
@@ -767,7 +767,7 @@ sev_launch_update_data(SevGuestState *sev, uint8_t *addr, uint64_t len)
         return 1;
     }
 
-    update.uaddr = (__u64)(unsigned long)addr;
+    update.uaddr = (uintptr_t)addr;
     update.len = len;
     trace_kvm_sev_launch_update_data(addr, len);
     ret = sev_ioctl(sev->sev_fd, KVM_SEV_LAUNCH_UPDATE_DATA,

util/fdmon-io_uring.c

@@ -180,7 +180,7 @@ static void add_poll_remove_sqe(AioContext *ctx, AioHandler *node)
     struct io_uring_sqe *sqe = get_sqe(ctx);
 
 #ifdef LIBURING_HAVE_DATA64
-    io_uring_prep_poll_remove(sqe, (__u64)(uintptr_t)node);
+    io_uring_prep_poll_remove(sqe, (uintptr_t)node);
 #else
     io_uring_prep_poll_remove(sqe, node);
 #endif