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| author |   Andi Kleen <ak@suse.de> | 2006-12-09 21:33:36 +0100 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2006-12-09 21:33:36 +0100 |
| commit | 1bac3b383a93a4a920ffc57441eb133c78567fbd (patch) | |
| tree | d9d767a3334271e3cde7116957f5eaa365b973be /arch/i386/kernel/vmlinux.lds.S | |
| parent | [PATCH] x86: Fix boot hang due to nmi watchdog init code (diff) | |
| download | linux-dev-1bac3b383a93a4a920ffc57441eb133c78567fbd.tar.xz linux-dev-1bac3b383a93a4a920ffc57441eb133c78567fbd.zip | |
[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>
Diffstat (limited to '')
| -rw-r--r-- | arch/i386/kernel/vmlinux.lds.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index 16d3c7133ad7..a53c8b1854b5 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -26,6 +26,7 @@ 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 */ |