path: root/arch/parisc/kernel/vmlinux.lds.S
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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2017-11-10 08:48:28 +0900
committerPetr Mladek <pmladek@suse.com>2018-01-09 10:45:38 +0100
commit1705bd6a68171d8b3ba05df9352757ee4e49317b (patch)
treee4727523aa536a156f3a190d3323e4584a2d157a /arch/parisc/kernel/vmlinux.lds.S
parent5633e85b2c3133051d8201b586ba195f1733096b (diff)
parisc64: Add .opd based function descriptor dereference
We are moving towards separate kernel and module function descriptor dereference callbacks. This patch enables it for parisc64. For pointers that belong to the kernel - Added __start_opd and __end_opd pointers, to track the kernel .opd section address range; - Added dereference_kernel_function_descriptor(). Now we will dereference only function pointers that are within [__start_opd, __end_opd); For pointers that belong to a module - Added dereference_module_function_descriptor() to handle module function descriptor dereference. Now we will dereference only pointers that are within [module->opd.start, module->opd.end). Link: http://lkml.kernel.org/r/20171109234830.5067-5-sergey.senozhatsky@gmail.com To: Tony Luck <tony.luck@intel.com> To: Fenghua Yu <fenghua.yu@intel.com> To: Helge Deller <deller@gmx.de> To: Benjamin Herrenschmidt <benh@kernel.crashing.org> To: Paul Mackerras <paulus@samba.org> To: Michael Ellerman <mpe@ellerman.id.au> To: James Bottomley <jejb@parisc-linux.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jessica Yu <jeyu@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-ia64@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Tested-by: Helge Deller <deller@gmx.de> #parisc64 Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'arch/parisc/kernel/vmlinux.lds.S')
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index 159a2ec0b4e0..da2e31190efa 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -100,7 +100,9 @@ SECTIONS
. = ALIGN(16);
/* Linkage tables */
.opd : {
+ __start_opd = .;
+ __end_opd = .;
} PROVIDE (__gp = .);
.plt : {