lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sh: rework kexec segment code

Browse Source 
Rework the kexec code to avoid using P2SEG. Instead
we walk the page list in machine_kexec() and convert
the addresses from physical to virtual using C.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2009-03-18 08:49:45 +00:00
committed by Paul Mundt
parent 7be5c55af0
commit e4e063d0c2
2 changed files with 17 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
arch/sh/kernel/machine_kexec.c
View File

@ -76,6 +76,21 @@ void machine_kexec(struct kimage *image)
unsigned long page_list;
unsigned long reboot_code_buffer;
relocate_new_kernel_t rnk;
unsigned long entry;
unsigned long *ptr;
/*
* Nicked from the mips version of machine_kexec():
* The generic kexec code builds a page list with physical
* addresses. Use phys_to_virt() to convert them to virtual.
*/
for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE);
ptr = (entry & IND_INDIRECTION) ?
phys_to_virt(entry & PAGE_MASK) : ptr + 1) {
if (*ptr & IND_SOURCE || *ptr & IND_INDIRECTION ||
*ptr & IND_DESTINATION)
*ptr = (unsigned long) phys_to_virt(*ptr);
}
/* Interrupts aren't acceptable while we reboot */
local_irq_disable();
@ -101,7 +116,7 @@ void machine_kexec(struct kimage *image)
#endif
/* now call it */
rnk = (relocate_new_kernel_t) reboot_code_buffer;
(*rnk)(page_list, reboot_code_buffer, P2SEGADDR(image->start));
(*rnk)(page_list, reboot_code_buffer, image->start);
}
void arch_crash_save_vmcoreinfo(void)