Re: Why disable vdso by default with CONFIG_PARAVIRT?

[Jeremy Fitzhardinge <jeremy@goop.org>]

Zachary Amsden wrote:
> Jeremy Fitzhardinge wrote:
>> Hi Andi,
>>
>> What problem do they cause together?  There's certainly no problem with
>> Xen+vdso (in fact, its actually very useful so that it picks up the
>> right libc with Xen-friendly TLS).
>>   
>
> Methinks the compat VDSO support got broken in the config?  Paravirt +
> COMPAT_VDSO are incompatible. 

Yes, that's true, but I'm looking at arch/i386/kernel/sysenter.c:

#ifdef CONFIG_PARAVIRT
unsigned int __read_mostly vdso_enabled = 0;
#else
unsigned int __read_mostly vdso_enabled = 1;
#endif

I can't think of any reason why that should be necessary.

    J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/