diff options
| author | Andi Kleen <ak@suse.de> | 2007-01-24 04:17:09 +1100 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2007-02-05 08:31:42 -0800 |
| commit | 787db6107036ffd8f89903857ce1327f73beabb3 (patch) | |
| tree | 47252d616942cc184ea66094663e1cddea5a27a1 /arch | |
| parent | 808c407e1a534865ca5e151b3a5bae58b73408a9 (diff) | |
[PATCH] x86: Work around gcc 4.2 over aggressive optimizer
The new PDA code uses a dummy _proxy_pda variable to describe
memory references to the PDA. It is never referenced
in inline assembly, but exists as input/output arguments.
gcc 4.2 in some cases can CSE references to this which causes
unresolved symbols. Define it to zero to avoid this.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | arch/x86_64/kernel/vmlinux.lds.S | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index c6f84a0322ba..9d24225c4af8 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -13,6 +13,7 @@ OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386") OUTPUT_ARCH(i386) ENTRY(phys_startup_32) jiffies = jiffies_64; +_proxy_pda = 0; PHDRS { text PT_LOAD FLAGS(5); /* R_E */ diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S index d9534e750d4f..79a680c5ab08 100644 --- a/arch/x86_64/kernel/vmlinux.lds.S +++ b/arch/x86_64/kernel/vmlinux.lds.S @@ -13,6 +13,7 @@ OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") OUTPUT_ARCH(i386:x86-64) ENTRY(phys_startup_64) jiffies_64 = jiffies; +_proxy_pda = 0; PHDRS { text PT_LOAD FLAGS(5); /* R_E */ data PT_LOAD FLAGS(7); /* RWE */ |