This is a note to let you know that I've just added the patch titled
parisc: Fix kernel memory layout regarding position of __gp
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-fix-kernel-memory-layout-regarding-position-of-__gp.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f8850abb7ba68229838014b3409460e576751c6d Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Sun, 9 Oct 2016 11:12:34 +0200
Subject: parisc: Fix kernel memory layout regarding position of __gp
From: Helge Deller <deller@xxxxxx>
commit f8850abb7ba68229838014b3409460e576751c6d upstream.
Architecturally we need to keep __gp below 0x1000000.
But because of ftrace and tracepoint support, the RO_DATA_SECTION now gets much
bigger than it was before. By moving the linkage tables before RO_DATA_SECTION
we can avoid that __gp gets positioned at a too high address.
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/vmlinux.lds.S | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -88,8 +88,9 @@ SECTIONS
/* Start of data section */
_sdata = .;
- RO_DATA_SECTION(8)
-
+ /* Architecturally we need to keep __gp below 0x1000000 and thus
+ * in front of RO_DATA_SECTION() which stores lots of tracepoint
+ * and ftrace symbols. */
#ifdef CONFIG_64BIT
. = ALIGN(16);
/* Linkage tables */
@@ -104,6 +105,8 @@ SECTIONS
}
#endif
+ RO_DATA_SECTION(8)
+
/* unwind info */
.PARISC.unwind : {
__start___unwind = .;
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-4.4/parisc-fix-kernel-memory-layout-regarding-position-of-__gp.patch
queue-4.4/parisc-increase-initial-kernel-mapping-size.patch
queue-4.4/parisc-increase-kernel_initial_size-for-32-bit-smp-kernels.patch
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