858259cf7d
Patch imlements full LDT handling in SKAS: * UML holds it's own LDT table, used to deliver data on modify_ldt(READ) * UML disables the default_ldt, inherited from the host (SKAS3) or resets LDT entries, set by host's clib and inherited in SKAS0 * A new global variable skas_needs_stub is inserted, that can be used to decide, whether stub-pages must be supported or not. * Uses the syscall-stub to replace missing PTRACE_LDT (therefore, write_ldt_entry needs to be modified) Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
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* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include "linux/config.h"
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#include "linux/mm.h"
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#include "asm/pgtable.h"
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#include "mem_user.h"
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#include "skas.h"
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unsigned long set_task_sizes_skas(int arg, unsigned long *host_size_out,
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unsigned long *task_size_out)
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{
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/* Round up to the nearest 4M */
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unsigned long top = ROUND_4M((unsigned long) &arg);
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#ifdef CONFIG_HOST_TASK_SIZE
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*host_size_out = CONFIG_HOST_TASK_SIZE;
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*task_size_out = CONFIG_HOST_TASK_SIZE;
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#else
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*host_size_out = top;
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if (!skas_needs_stub)
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*task_size_out = top;
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else *task_size_out = CONFIG_STUB_START & PGDIR_MASK;
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#endif
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return(((unsigned long) set_task_sizes_skas) & ~0xffffff);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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