Re: [PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-10 Thread Josh Poimboeuf
On Mon, Apr 09, 2018 at 01:14:58PM +, David Laight wrote: > From: kpark3...@gmail.com > > Sent: 09 April 2018 12:59 > > > > The old arch_within_stack_frames which used the frame pointer is > > now reimplemented to use frame pointer unwinder apis. So the main > > functionality is same as

Re: [PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-10 Thread Josh Poimboeuf
On Mon, Apr 09, 2018 at 01:14:58PM +, David Laight wrote: > From: kpark3...@gmail.com > > Sent: 09 April 2018 12:59 > > > > The old arch_within_stack_frames which used the frame pointer is > > now reimplemented to use frame pointer unwinder apis. So the main > > functionality is same as

RE: [PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-09 Thread David Laight
From: kpark3...@gmail.com > Sent: 09 April 2018 12:59 > > The old arch_within_stack_frames which used the frame pointer is > now reimplemented to use frame pointer unwinder apis. So the main > functionality is same as before. How much slower does this make the code? Following stack frames using

RE: [PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-09 Thread David Laight
From: kpark3...@gmail.com > Sent: 09 April 2018 12:59 > > The old arch_within_stack_frames which used the frame pointer is > now reimplemented to use frame pointer unwinder apis. So the main > functionality is same as before. How much slower does this make the code? Following stack frames using

[PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-09 Thread kpark3469
From: Sahara The old arch_within_stack_frames which used the frame pointer is now reimplemented to use frame pointer unwinder apis. So the main functionality is same as before. Signed-off-by: Sahara --- arch/x86/include/asm/unwind.h | 5

[PATCH v3 3/3] x86: usercopy: reimplement arch_within_stack_frames with unwinder

2018-04-09 Thread kpark3469
From: Sahara The old arch_within_stack_frames which used the frame pointer is now reimplemented to use frame pointer unwinder apis. So the main functionality is same as before. Signed-off-by: Sahara --- arch/x86/include/asm/unwind.h | 5 arch/x86/kernel/stacktrace.c | 64