[PATCH 1 of 1] x86_43: Put .note.* sections into a PT_NOTE segment in vmlinux

[PATCH 1 of 1] x86_43: Put .note.* sections into a PT_NOTE segment in vmlinux

[Ian Campbell]

On Tue, 2006-08-01 at 13:00 -0700, Jeremy Fitzhardinge wrote:
> This patch will pack any .note.* section into a PT_NOTE segment in the
> output file.
[...]
> This only changes i386 for now, but I presume the corresponding
> changes for other architectures will be as simple.

Here is the patch for x86_64.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

diff -urN ref-linux-2.6.16.13/arch/x86_64/kernel/vmlinux.lds.S x86-64_elfnotes/arch/x86_64/kernel/vmlinux.lds.S
--- ref-linux-2.6.16.13/arch/x86_64/kernel/vmlinux.lds.S	2006-05-02 22:38:44.000000000 +0100
+++ x86-64_elfnotes/arch/x86_64/kernel/vmlinux.lds.S	2006-08-22 11:39:14.000000000 +0100
@@ -14,6 +14,11 @@
 OUTPUT_ARCH(i386:x86-64)
 ENTRY(phys_startup_64)
 jiffies_64 = jiffies;
+PHDRS {
+	text PT_LOAD FLAGS(5);	/* R_E */
+	data PT_LOAD FLAGS(7);	/* RWE */
+	note PT_NOTE FLAGS(4);	/* R__ */
+}
 SECTIONS
 {
   . = __START_KERNEL;
@@ -26,7 +31,7 @@
 	KPROBES_TEXT
 	*(.fixup)
 	*(.gnu.warning)
-	} = 0x9090
+	} :text = 0x9090
   				/* out-of-line lock text */
   .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
 
@@ -43,7 +48,7 @@
   .data : AT(ADDR(.data) - LOAD_OFFSET) {
 	*(.data)
 	CONSTRUCTORS
-	}
+	} :data
 
   _edata = .;			/* End of data section */
 
@@ -201,4 +206,6 @@
   STABS_DEBUG
 
   DWARF_DEBUG
+
+  NOTES
 }

Re: [PATCH 1 of 1] x86_43: Put .note.* sections into a PT_NOTE segment in vmlinux

[Andi Kleen]

On Tue, 22 Aug 2006 12:14:18 +0100
Ian Campbell <Ian.Campbell@XenSource.com> wrote:

> On Tue, 2006-08-01 at 13:00 -0700, Jeremy Fitzhardinge wrote:
> > This patch will pack any .note.* section into a PT_NOTE segment in the
> > output file.
> [...]
> > This only changes i386 for now, but I presume the corresponding
> > changes for other architectures will be as simple.
> 
> Here is the patch for x86_64.

Ok, but can you please resubmit with complete changelog/rationale?

Thanks,

-Andi

Re: [PATCH 1 of 1] x86_43: Put .note.* sections into a PT_NOTE segment in vmlinux

[Ian Campbell]

On Tue, 2006-08-22 at 13:33 +0200, Andi Kleen wrote:
> On Tue, 22 Aug 2006 12:14:18 +0100
> Ian Campbell <Ian.Campbell@XenSource.com> wrote:
> 
> > On Tue, 2006-08-01 at 13:00 -0700, Jeremy Fitzhardinge wrote:
> > > This patch will pack any .note.* section into a PT_NOTE segment in the
> > > output file.
> > [...]
> > > This only changes i386 for now, but I presume the corresponding
> > > changes for other architectures will be as simple.
> > 
> > Here is the patch for x86_64.
> 
> Ok, but can you please resubmit with complete changelog/rationale?

Will do.

I've just noticed a bunch of sections (.vsyscall_*, .xtime and others)
which aren't getting put into segments for some reason. I'll figure that
out first...

Ian.