The patch titled
i386: Distinguish absolute symbols (fix)
has been removed from the -mm tree. Its filename is
i386-distinguish-absolute-symbols-fix.patch
This patch was dropped because it was folded into i386-distinguish-absolute-symbols.patch
------------------------------------------------------
Subject: i386: Distinguish absolute symbols (fix)
From: Vivek Goyal <vgoyal@xxxxxxxxxx>
o There seems to be one extra ALIGN(4096) before symbol __smp_alt_end. The
only usage of __smp_alt_end is to mark the end of smp alternative
sections so that this memory can be freed. As a physical page is freed
one has to just make sure that there is no other data on the same page
where __smp_alt_end is pointing. There is already a ALIGN(4096) after
this section which should take care of the above issue. Hence it looks
like the ALIGN(4096) before __smp_alt_end is redundant and not required.
Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx>
Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/vmlinux.lds.S | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff -puN arch/i386/kernel/vmlinux.lds.S~i386-distinguish-absolute-symbols-fix arch/i386/kernel/vmlinux.lds.S
--- a/arch/i386/kernel/vmlinux.lds.S~i386-distinguish-absolute-symbols-fix
+++ a/arch/i386/kernel/vmlinux.lds.S
@@ -116,11 +116,15 @@ SECTIONS
}
.smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
*(.smp_altinstr_replacement)
- . = ALIGN(4096);
__smp_alt_end = .;
}
- /* will be freed after init */
+ /* will be freed after init
+ * Following ALIGN() is required to make sure no other data falls on the
+ * same page where __smp_alt_end is pointing as that page might be freed
+ * after boot. Always make sure that ALIGN() directive is present after
+ * the section which contains __smp_alt_end.
+ */
. = ALIGN(4096); /* Init code and data */
.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
__init_begin = .;
_
Patches currently in -mm which might be from vgoyal@xxxxxxxxxx are
x86_64-overlapping-program-headers-in-physical-addr-space-fix.patch
i386-distinguish-absolute-symbols.patch
i386-distinguish-absolute-symbols-fix.patch
i386-align-data-section-to-4k-boundary.patch
i386-define-__pa_symbol-2.patch
i386-setupc-reserve-kernel-memory-starting-from-_text.patch
i386-config_physical_start-cleanup.patch
make-linux-elfh-safe-to-be-included-in-assembly-files.patch
elf-add-elfosabi_standalone-to-elfh.patch
kallsyms-generate-relocatable-symbols.patch
i386-relocatable-kernel-support.patch
i386-implement-config_physical_align.patch
i386-boot-add-an-elf-header-to-bzimage.patch
i386-boot-add-an-elf-header-to-bzimage-fix.patch
i386-boot-add-an-elf-header-to-bzimage-update-2.patch
i386-boot-add-an-elf-header-to-bzimage-fix-fix-fix.patch
i386-boot-add-an-elf-header-to-bzimage-fix-fix-fix-fix.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
