Re: [PATCH 30/30] x32: Add x32 VDSO support

[H. Peter Anvin]

On 02/21/2012 10:54 AM, Andrew Lutomirski wrote:
> 
> uclibc hardcodes a call to the vsyscall gettimeofday implementation in
> its locking primitives, which probably gives terrible performance, but
> that's a separate issue.  I think do_emulate_vsyscall should send a
> segfault if called by an x32 task -- there's some security benefit to
> doing so, and there's unlikely to be any downside.
> 

The vsyscall page shouldn't be mapped for x32 tasks...

	-hpa


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