Merge tag 'uml-for-linux-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux

Pull UML updates from Johannes Berg:

 - proper nofault accesses and read-only rodata

 - hostfs fix for host inode number reuse

 - fixes for host errno handling

 - various cleanups/small fixes

* tag 'uml-for-linux-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
  um: Rewrite the sigio workaround based on epoll and tgkill
  um: Prohibit the VM_CLONE flag in run_helper_thread()
  um: Switch to the pthread-based helper in sigio workaround
  um: ubd: Switch to the pthread-based helper
  um: Add pthread-based helper support
  um: x86: clean up elf specific definitions
  um: Store full CSGSFS and SS register from mcontext
  um: virt-pci: Refactor virtio_pcidev into its own module
  um: work around sched_yield not yielding in time-travel mode
  um/locking: Remove semicolon from "lock" prefix
  um: Update min_low_pfn to match changes in uml_reserved
  um: use str_yes_no() to remove hardcoded "yes" and "no"
  um: hostfs: avoid issues on inode number reuse by host
  um: Allocate vdso page pointer statically
  um: remove copy_from_kernel_nofault_allowed
  um: mark rodata read-only and implement _nofault accesses
  um: Pass the correct Rust target and options with gcc

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 5babad8c5f75..152a60080d5b 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -213,7 +213,6 @@ extern int os_protect_memory(void *addr, unsigned long len,
 extern int os_unmap_memory(void *addr, int len);
 extern int os_drop_memory(void *addr, int length);
 extern int can_drop_memory(void);
-extern int os_mincore(void *addr, unsigned long len);
 
 void os_set_pdeathsig(void);
 
@@ -225,6 +224,11 @@ extern int run_helper_thread(int (*proc)(void *), void *arg,
 			     unsigned int flags, unsigned long *stack_out);
 extern int helper_wait(int pid);
 
+struct os_helper_thread;
+int os_run_helper_thread(struct os_helper_thread **td_out,
+			 void *(*routine)(void *), void *arg);
+void os_kill_helper_thread(struct os_helper_thread *td);
+void os_fix_helper_thread_signals(void);
 
 /* umid.c */
 extern int umid_file_name(char *name, char *buf, int len);
@@ -310,7 +314,7 @@ extern void um_irqs_resume(void);
 extern int add_sigio_fd(int fd);
 extern int ignore_sigio_fd(int fd);
 extern void maybe_sigio_broken(int fd);
-extern void sigio_broken(int fd);
+extern void sigio_broken(void);
 /*
  * unlocked versions for IRQ controller code.
  *