VirtualBox

Ticket #8651 (new enhancement)

Opened 3 years ago

Last modified 8 weeks ago

[feature request] Enable the guest OS to make use of SSE4.1, 4.2 and POPCNT instruction sets

Reported by: RW1 Owned by:
Priority: major Component: other
Version: VirtualBox 4.0.4 Keywords:
Cc: Guest type: Windows
Host type: Linux

Description

When the CPU supports it, e.g. an Intel Core i7, and SSE4_1, SSE4_2 and POPCNT are among the cpu flags, please make sure that the guest OS can make use of these instruction sets. I just found out that this functionality isn't as yet supported, at least not on a Linux 64-bit host and a Win 7 64-bit guest.

Change History

comment:1 Changed 3 years ago by drearycold

+1

My host cpu is Athlon(tm) II X3 445, as of 4.1.0, some CPU features cannot be seen by guest Please make instructions like POPCNT, SSE4A, Misaligned SSE, Advanced bit manipulation usable by guest

Thanks

comment:2 Changed 21 months ago by sebcactus

+1

Current installation profile:

Virtualbox 4.1.18 
Host: Snow Leopard (OS X 10.6.8)
Guest: Ubuntu 12.04

On Virtualbox:

CPU: Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz 
flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc rep_good nopl pni ssse3 lahf_lm

On parallels desktop:

CPU: Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz 
flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc arch_perfmon nopl nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm ida arat dts

comment:3 Changed 20 months ago by sebcactus

Still does not work on Virtualbox 4.1.22

comment:4 Changed 2 months ago by Romasius

Still does not work on Virtualbox 4.3.6, (Intel i7-2600 (SSE4.1/4.2, AVX))

comment:5 Changed 8 weeks ago by frank

VBox  4.3.8 RC1 provides experimental support for passing through SSE 4.1/4.2. Please have a look at the user manual -- it is required to enable this support manually per-VM.

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