The patch titled
Xen i386 xen-head.S fix sections mixup
has been added to the -mm tree. Its filename is
xen-i386-xen-heads-fix-sections-mixup-update-2.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Xen i386 xen-head.S fix sections mixup
From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Xen i386 xen-head.S fix sections mixup
xen-head.S does not come back to the data section, leaving the text section
as current section. It causes problems with a slightly enhanced DEBUG_RODATA
that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been
marked read-only: reference to early_gdt_descr causes a page fault.
Updates:
- It should be using pushsection/popsection.
- Actually, the push/popsections around the ELFNOTEs are redundant; ELFNOTE()
does its own push/popsection to put things into the appropriate .note* section
anyway.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Acked-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/i386/xen/xen-head.S | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff -puN arch/i386/xen/xen-head.S~xen-i386-xen-heads-fix-sections-mixup-update-2 arch/i386/xen/xen-head.S
--- a/arch/i386/xen/xen-head.S~xen-i386-xen-heads-fix-sections-mixup-update-2
+++ a/arch/i386/xen/xen-head.S
@@ -7,20 +7,20 @@
#include <asm/boot.h>
#include <xen/interface/elfnote.h>
- .section .init.text
+.pushsection .init.text
ENTRY(startup_xen)
movl %esi,xen_start_info
cld
movl $(init_thread_union+THREAD_SIZE),%esp
jmp xen_start_kernel
+.popsection
-.pushsection ".bss.page_aligned"
+.pushsection .bss.page_aligned
.align PAGE_SIZE_asm
ENTRY(hypercall_page)
.skip 0x1000
.popsection
- .section .text
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "2.6")
ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz "xen-3.0")
_
Patches currently in -mm which might be from mathieu.desnoyers@xxxxxxxxxx are
xen-i386-xen-heads-fix-sections-mixup-update-2.patch
powerpc-include-pagemaph-in-asm-powerpc-tlbh.patch
fix-f_version-type-should-be-u64-instead-of-unsigned-long.patch
-
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