powerpc: Fix loss of vdso on fork on 32-bit
When we fork, init_new_context() improperly resets the vdso_base of the new context to 0. That means that the new process loses access to the vdso for signal trampolines. The initialization should be unnecessary anyway as the context on a fresh mm should be 0 in the first place and binfmt_elf will initialize that value for a newly loaded process. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -147,7 +147,6 @@ static inline void get_mmu_context(struct mm_struct *mm)
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static inline int init_new_context(struct task_struct *t, struct mm_struct *mm)
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{
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mm->context.id = NO_CONTEXT;
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mm->context.vdso_base = 0;
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return 0;
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}
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