[Ffmpeg-devel] Re: Broken trunk on AMD64 with PIC enabled
Thu Apr 5 10:08:14 CEST 2007
Reimar Doeffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> writes:
> On Thu, Apr 05, 2007 at 12:35:04AM +0200, Michael Niedermayer wrote:
>> hmm, first IIRC x86-64 doesnt truely support 64bit addressing but rather
>> 48bit or so, but i might be wrong, ive not checked the docs i am just
>> repeating what i read here sometime ago ...
> Docs say it supports at least 48 (or was it 40) bits, how many exactly
> must be checked, e.g. via CPUID or writing all ones to a register that
> sets the unsupported bits to 0 or similar.
My /proc/cpuinfo says 36 bits physical, 48 bits virtual for Intel
mans at mansr.com
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