linux: update 4.4.x kernel to latest

1 files changed, 0 insertions, 100 deletions

diff --git a/target/linux/patches/4.4.289/coldfire-sighandler.patch b/target/linux/patches/4.4.289/coldfire-sighandler.patch
deleted file mode 100644
index c52a4e228..000000000
--- a/target/linux/patches/4.4.289/coldfire-sighandler.patch
+++ /dev/null
@@ -1,100 +0,0 @@
-From a95517992a37488c0bc8b629c47c570e580e407d Mon Sep 17 00:00:00 2001
-From: Greg Ungerer <gerg@uclinux.org>
-Date: Mon, 15 Feb 2016 16:36:29 +1000
-Subject: m68k: Use conventional function parameters for do_sigreturn
-
-Create conventional stack parameters for the calls to do_sigreturn and
-do_rt_sigreturn. The current C code for do_sigreturn and do_rt_sigreturn
-dig into the stack to create local pointers to the saved switch stack
-and the pt_regs structs.
-
-The motivation for this change is a problem with non-MMU targets that
-have broken signal return paths on newer versions of gcc. It appears as
-though gcc has determined that the pointers into the saved stack structs,
-and the saved structs themselves, are function parameters and updates to
-them will be lost on function return, so they are optimized away. This
-results in large parts of restore_sigcontext() and mangle_kernel_stack()
-functions being removed. Of course this results in non-functional code
-causing kernel oops. This problem has been observed with gcc version
-5.2 and 5.3, and probably exists in earlier versions as well.
-
-Using conventional stack parameter pointers passed to these functions has
-the advantage of the code here not needing to know the exact details of
-how the underlying entry handler layed these structs out on the stack.
-So the rather ugly pointer setup casting and arg referencing can be
-removed.
-
-The resulting code after this change is a few bytes larger (due to the
-overhead of creating the stack args and their tear down). Not being hot
-paths I don't think this is too much of a problem here.
-
-An alternative solution is to put a barrier() in the do_sigreturn() code,
-but this doesn't feel quite as clean as this solution.
-
-This change has been compile tested on all defconfigs, and run tested on
-Atari (through aranym), ColdFire with MMU (M5407EVB) and ColdFire with
-no-MMU (QEMU and M5208EVB).
-
-Signed-off-by: Greg Ungerer <gerg@uclinux.org>
-Acked-by: Andreas Schwab <schwab@linux-m68k.org>
-Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
----
- arch/m68k/kernel/entry.S  | 6 ++++++
- arch/m68k/kernel/signal.c | 8 ++------
- 2 files changed, 8 insertions(+), 6 deletions(-)
-
-diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
-index b54ac7a..97cd3ea 100644
---- a/arch/m68k/kernel/entry.S
-+++ b/arch/m68k/kernel/entry.S
-@@ -71,13 +71,19 @@ ENTRY(__sys_vfork)
- 
- ENTRY(sys_sigreturn)
- 	SAVE_SWITCH_STACK
-+	movel	%sp,%sp@-		  | switch_stack pointer
-+	pea	%sp@(SWITCH_STACK_SIZE+4) | pt_regs pointer
- 	jbsr	do_sigreturn
-+	addql	#8,%sp
- 	RESTORE_SWITCH_STACK
- 	rts
- 
- ENTRY(sys_rt_sigreturn)
- 	SAVE_SWITCH_STACK
-+	movel	%sp,%sp@-		  | switch_stack pointer
-+	pea	%sp@(SWITCH_STACK_SIZE+4) | pt_regs pointer
- 	jbsr	do_rt_sigreturn
-+	addql	#8,%sp
- 	RESTORE_SWITCH_STACK
- 	rts
- 
-diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
-index af1c4f3..2dcee3a 100644
---- a/arch/m68k/kernel/signal.c
-+++ b/arch/m68k/kernel/signal.c
-@@ -737,10 +737,8 @@ badframe:
- 	return 1;
- }
- 
--asmlinkage int do_sigreturn(unsigned long __unused)
-+asmlinkage int do_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
- {
--	struct switch_stack *sw = (struct switch_stack *) &__unused;
--	struct pt_regs *regs = (struct pt_regs *) (sw + 1);
- 	unsigned long usp = rdusp();
- 	struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
- 	sigset_t set;
-@@ -764,10 +762,8 @@ badframe:
- 	return 0;
- }
- 
--asmlinkage int do_rt_sigreturn(unsigned long __unused)
-+asmlinkage int do_rt_sigreturn(struct pt_regs *regs, struct switch_stack *sw)
- {
--	struct switch_stack *sw = (struct switch_stack *) &__unused;
--	struct pt_regs *regs = (struct pt_regs *) (sw + 1);
- 	unsigned long usp = rdusp();
- 	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);
- 	sigset_t set;
--- 
-cgit v0.12
-