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authorJeff Dike <jdike@addtoit.com>2007-10-16 10:26:58 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 18:43:05 +0200
commit77bf4400319db9d2a8af6b00c2be6faa0f3d07cb (patch)
treeddc8fd48349b8d4dd2c0b26bce7f52f79b4e4077 /arch/um/kernel/exec.c
parentuml: style fixes pass 2 (diff)
downloadlinux-77bf4400319db9d2a8af6b00c2be6faa0f3d07cb.tar.xz
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uml: remove code made redundant by CHOOSE_MODE removal
This patch makes a number of simplifications enabled by the removal of CHOOSE_MODE. There were lots of functions that looked like int foo(args){ foo_skas(args); } The bodies of foo_skas are now folded into foo, and their declarations (and sometimes entire header files) are deleted. In addition, the union uml_pt_regs, which was a union between the tt and skas register formats, is now a struct, with the tt-mode arm of the union being removed. It turns out that usr2_handler was unused, so it is gone. 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>
Diffstat (limited to 'arch/um/kernel/exec.c')
-rw-r--r--arch/um/kernel/exec.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 8f774c25b765..5064fb691eb5 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -18,17 +18,31 @@
#include "irq_user.h"
#include "tlb.h"
#include "os.h"
-#include "mode_kern.h"
+#include "skas/skas.h"
void flush_thread(void)
{
+ void *data = NULL;
+ unsigned long end = proc_mm ? task_size : CONFIG_STUB_START;
+ int ret;
+
arch_flush_thread(&current->thread.arch);
- flush_thread_skas();
+
+ ret = unmap(&current->mm->context.skas.id, 0, end, 1, &data);
+ if(ret){
+ printk("flush_thread - clearing address space failed, "
+ "err = %d\n", ret);
+ force_sig(SIGKILL, current);
+ }
+
+ __switch_mm(&current->mm->context.skas.id);
}
void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
{
- start_thread_skas(regs, eip, esp);
+ set_fs(USER_DS);
+ PT_REGS_IP(regs) = eip;
+ PT_REGS_SP(regs) = esp;
}
#ifdef CONFIG_TTY_LOG