Messages in this thread | | | Date | Fri, 02 Mar 2007 13:19:54 -0800 | From | John Reiser <> | Subject | Re: + fully-honor-vdso_enabled.patch added to -mm tree |
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Oleg Nesterov wrote:
> Still, I don't understand why we don't pass NEW_AUX_ENT(AT_SYSINFO) when > vdso_enabled == 0. We don't need linux-gate.so to use __kernel_vsyscall, > we have FIX_VDSO. In that case we should s/PAGE_KERNEL_RO/PAGE_READONLY/ > of course. I guess the reason is some magic in glibc.
In the past there were problems where user code could not single-step (or even read the code of) such system calls. Can these two operations be performed today with what you propose, particularly if FIX_VDSO is near 0xfffff000 ?
-- John Reiser, jreiser@BitWagon.com - 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/
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