I mostly filed the bug report since I was seeing multiple different attempts to implement this, and even a proper patch series on the mailing list, but no movement at all toward integrating this feature into mainline qemu.
What would be needed to e.g. make the patch series on the mailing list acceptable for merge? -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1594069 Title: SIMD instructions translated to scalar host instructions Status in QEMU: Confirmed Bug description: SIMD instructions inside the guest (NEON, MMX, SSE, SSE2, AVX) are translated to scalar instructions on the host instead of SIMD instructions. It appears that there have been a few efforts to rectify this [1], and even a submitted patch series, but all discussion has effectively died out [2]. I would like to see better SIMD performance on qemu, especially as non-x86 architectures are becoming widely used (e.g. ARM). [1] http://dl.acm.org/citation.cfm?id=2757098&dl=ACM&coll=DL&CFID=633095244&CFTOKEN=12352103 [2] https://lists.nongnu.org/archive/html/qemu-devel/2014-10/msg01720.html To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1594069/+subscriptions
