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| author | Cyrill Gorcunov <gorcunov@openvz.org> | 2010-01-13 11:16:07 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-13 11:23:45 +0100 |
| commit | 864a0922dd128392467611d9857e5138c6a91999 (patch) | |
| tree | 1ce4f65ab7ed12d229be35de84b66ea445672522 | |
| parent | x86/agp: Fix agp_amd64_init and agp_amd64_cleanup (diff) | |
| download | linux-864a0922dd128392467611d9857e5138c6a91999.tar.xz linux-864a0922dd128392467611d9857e5138c6a91999.zip | |
x86: kernel_thread() -- initialize SS to a known state
Before the kernel_thread was converted into "C" we had
pt_regs::ss set to __KERNEL_DS (by SAVE_ALL asm macro).
Though I must admit I didn't find any *explicit* load of
%ss from this structure the better to be on a safe side
and set it to a known value.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Christian Kujau <lists@nerdbynature.de>
Cc: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>
Cc: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1263377768-19600-1-git-send-email-ian.campbell@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/process.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index c6ee241c8a98..02c3ee013ccd 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -288,6 +288,8 @@ int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) regs.es = __USER_DS; regs.fs = __KERNEL_PERCPU; regs.gs = __KERNEL_STACK_CANARY; +#else + regs.ss = __KERNEL_DS; #endif regs.orig_ax = -1; |