[Bug target/61570] -march=native CPU you selected does not support x86-64 instruction under QEMU

mikpelinux at gmail dot com gcc-bugzilla@gcc.gnu.org
Fri Jun 20 09:17:00 GMT 2014


--- Comment #1 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Well, qemu seems confused (as usual).  Having "lm" and "lahf_lm"in the CPUID
feature flags and a 48-bit virtual address space implies being 64-bit, but
Intel Family 6 Model 13 implies being the 32-bit only Pentium-M.

Since real HW doesn't get this confused I'd classify it as a qemu bug.  (We've
seen several similar "impossible" cases in LKML.)

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