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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-09-03 20:43:36 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-09-09 11:51:15 -0700
commitdeac93df26b20cf8438339b5935b5f5643bc30c9 (patch)
tree8e67edd505e4a8bde380c724b67ce9ca98b8ee91 /arch/parisc
parent7ae115b4f50d3c5824f1a15e572b5de9d1b06d35 (diff)
downloadop-kernel-dev-deac93df26b20cf8438339b5935b5f5643bc30c9.zip
op-kernel-dev-deac93df26b20cf8438339b5935b5f5643bc30c9.tar.gz
lib: Correct printk %pF to work on all architectures
It was introduced by "vsprintf: add support for '%pS' and '%pF' pointer formats" in commit 0fe1ef24f7bd0020f29ffe287dfdb9ead33ca0b2. However, the current way its coded doesn't work on parisc64. For two reasons: 1) parisc isn't in the #ifdef and 2) parisc has a different format for function descriptors Make dereference_function_descriptor() more accommodating by allowing architecture overrides. I put the three overrides (for parisc64, ppc64 and ia64) in arch/kernel/module.c because that's where the kernel internal linker which knows how to deal with function descriptors sits. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tony Luck <tony.luck@intel.com> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/kernel/module.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index fdacdd4..44138c3 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -47,7 +47,9 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/bug.h>
+#include <linux/uaccess.h>
+#include <asm/sections.h>
#include <asm/unwind.h>
#if 0
@@ -860,3 +862,15 @@ void module_arch_cleanup(struct module *mod)
deregister_unwind_table(mod);
module_bug_cleanup(mod);
}
+
+#ifdef CONFIG_64BIT
+void *dereference_function_descriptor(void *ptr)
+{
+ Elf64_Fdesc *desc = ptr;
+ void *p;
+
+ if (!probe_kernel_address(&desc->addr, p))
+ ptr = p;
+ return ptr;
+}
+#endif
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