9157f90f08
This patchset makes UML build and run with three-level page tables on 32-bit hosts. This is an uncommon use case, but the code here needed fixing and cleaning up, so 32-bit three-level pages tables were tested to make sure the changes are good. Patch 1 - code movement Patch 2 - header untangling Patch 3 - style fixups in files affected so far Patch 4 - clean up use of current.h Patch 5 - fix sizes of types that are different between 2 and 3-level page tables - three-level page table support should build at this point Patch 6 - tidy (i.e. eliminate much of) the code that figures out how big the address space is Patch 7 - change um_virt_to_phys into virt_to_pte, clean its interface, and clean its (so far) one caller Patch 8 - the stub pages are covered with a VMA, allowing some nasty code to be thrown out - three-level page tables now work This patch: um_virt_to_phys only has one user, so it can be moved to the same file and made static. Its declarations in pgtable.h and ksyms.c are also gone. current_cmd was another apparent user, but it itself isn't used, so it is deleted. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
2 KiB
C
80 lines
2 KiB
C
/*
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* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#include "linux/module.h"
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#include "linux/syscalls.h"
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#include "asm/a.out.h"
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#include "asm/tlbflush.h"
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#include "asm/uaccess.h"
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#include "as-layout.h"
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#include "kern_util.h"
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#include "mem_user.h"
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#include "os.h"
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EXPORT_SYMBOL(uml_physmem);
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EXPORT_SYMBOL(set_signals);
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EXPORT_SYMBOL(get_signals);
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EXPORT_SYMBOL(kernel_thread);
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EXPORT_SYMBOL(sys_waitpid);
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EXPORT_SYMBOL(task_size);
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EXPORT_SYMBOL(flush_tlb_range);
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EXPORT_SYMBOL(host_task_size);
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EXPORT_SYMBOL(arch_validate);
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EXPORT_SYMBOL(get_kmem_end);
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EXPORT_SYMBOL(high_physmem);
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EXPORT_SYMBOL(empty_zero_page);
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EXPORT_SYMBOL(handle_page_fault);
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EXPORT_SYMBOL(find_iomem);
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EXPORT_SYMBOL(strnlen_user);
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EXPORT_SYMBOL(strncpy_from_user);
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EXPORT_SYMBOL(copy_to_user);
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EXPORT_SYMBOL(copy_from_user);
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EXPORT_SYMBOL(clear_user);
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EXPORT_SYMBOL(uml_strdup);
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EXPORT_SYMBOL(os_stat_fd);
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EXPORT_SYMBOL(os_stat_file);
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EXPORT_SYMBOL(os_access);
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EXPORT_SYMBOL(os_get_exec_close);
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EXPORT_SYMBOL(os_set_exec_close);
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EXPORT_SYMBOL(os_getpid);
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EXPORT_SYMBOL(os_open_file);
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EXPORT_SYMBOL(os_read_file);
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EXPORT_SYMBOL(os_write_file);
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EXPORT_SYMBOL(os_seek_file);
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EXPORT_SYMBOL(os_lock_file);
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EXPORT_SYMBOL(os_ioctl_generic);
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EXPORT_SYMBOL(os_pipe);
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EXPORT_SYMBOL(os_file_type);
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EXPORT_SYMBOL(os_file_mode);
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EXPORT_SYMBOL(os_file_size);
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EXPORT_SYMBOL(os_flush_stdout);
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EXPORT_SYMBOL(os_close_file);
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EXPORT_SYMBOL(os_set_fd_async);
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EXPORT_SYMBOL(os_set_fd_block);
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EXPORT_SYMBOL(helper_wait);
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EXPORT_SYMBOL(os_shutdown_socket);
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EXPORT_SYMBOL(os_create_unix_socket);
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EXPORT_SYMBOL(os_connect_socket);
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EXPORT_SYMBOL(os_accept_connection);
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EXPORT_SYMBOL(os_rcv_fd);
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EXPORT_SYMBOL(run_helper);
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EXPORT_SYMBOL(start_thread);
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EXPORT_SYMBOL(dump_thread);
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#ifdef CONFIG_SMP
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/* required for SMP */
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extern void __write_lock_failed(rwlock_t *rw);
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EXPORT_SYMBOL(__write_lock_failed);
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extern void __read_lock_failed(rwlock_t *rw);
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EXPORT_SYMBOL(__read_lock_failed);
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#endif
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