mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
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
/*
|
|
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include "linux/config.h"
|
|
#include "linux/mm.h"
|
|
#include "asm/pgtable.h"
|
|
#include "mem_user.h"
|
|
#include "skas.h"
|
|
|
|
unsigned long set_task_sizes_skas(int arg, unsigned long *host_size_out,
|
|
unsigned long *task_size_out)
|
|
{
|
|
/* Round up to the nearest 4M */
|
|
unsigned long top = ROUND_4M((unsigned long) &arg);
|
|
|
|
#ifdef CONFIG_HOST_TASK_SIZE
|
|
*host_size_out = CONFIG_HOST_TASK_SIZE;
|
|
*task_size_out = CONFIG_HOST_TASK_SIZE;
|
|
#else
|
|
*host_size_out = top;
|
|
if (!skas_needs_stub)
|
|
*task_size_out = top;
|
|
else *task_size_out = CONFIG_STUB_START & PGDIR_MASK;
|
|
#endif
|
|
return(((unsigned long) set_task_sizes_skas) & ~0xffffff);
|
|
}
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|