linux/arch/x86/kernel/trampoline.c
Ingo Molnar 77ad386e59 x86: standalone trampoline code
move the trampoline setup code out of smpboot.c - UP kernels can have
suspend support too.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 17:41:37 +02:00

18 lines
500 B
C

#include <linux/io.h>
#include <asm/trampoline.h>
/* ready for x86_64, no harm for x86, since it will overwrite after alloc */
unsigned char *trampoline_base = __va(TRAMPOLINE_BASE);
/*
* Currently trivial. Write the real->protected mode
* bootstrap into the page concerned. The caller
* has made sure it's suitably aligned.
*/
unsigned long setup_trampoline(void)
{
memcpy(trampoline_base, trampoline_data,
trampoline_end - trampoline_data);
return virt_to_phys(trampoline_base);
}