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Merge branch 'topic/livepatch' into next

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Merge the support for live patching on ppc64le using mprofile-kernel.
This branch has also been merged into the livepatching tree for v4.7.
This commit is contained in:
Michael Ellerman
2016-04-18 20:45:32 +10:00
parent 1050e689a6 85baa09549
commit 8404410b29
11 changed files with 232 additions and 13 deletions
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6
arch/powerpc/kernel/process.c
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@@ -57,6 +57,8 @@
#endif
#include <asm/code-patching.h>
#include <asm/exec.h>
#include <asm/livepatch.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
@@ -1402,13 +1404,15 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
extern void ret_from_kernel_thread(void);
void (*f)(void);
unsigned long sp = (unsigned long)task_stack_page(p) + THREAD_SIZE;
struct thread_info *ti = task_thread_info(p);
klp_init_thread_info(ti);
/* Copy registers */
sp -= sizeof(struct pt_regs);
childregs = (struct pt_regs *) sp;
if (unlikely(p->flags & PF_KTHREAD)) {
/* kernel thread */
struct thread_info *ti = (void *)task_stack_page(p);
memset(childregs, 0, sizeof(struct pt_regs));
childregs->gpr[1] = sp + sizeof(struct pt_regs);
/* function */