Re: [Qemu-devel] [PATCH v5 0/2] add avx2 instruction optimization

2016-02-21 Thread Li, Liang Z
> Not sure; I could take it from the migration tree if no one objects. > > Amit Thanks, Amit. If rework is needed, just let me know. Liang

Re: [Qemu-devel] [PATCH v5 0/2] add avx2 instruction optimization

2016-02-21 Thread Amit Shah
On (Mon) 22 Feb 2016 [06:23:54], Li, Liang Z wrote: > > On 27/01/2016 08:33, Liang Li wrote: > > > buffer_find_nonzero_offset() is a hot function during live migration. > > > Now it use SSE2 instructions for optimization. For platform supports > > > AVX2 instructions, use the AVX2 instructions for

Re: [Qemu-devel] [PATCH v5 0/2] add avx2 instruction optimization

2016-02-21 Thread Li, Liang Z
> On 27/01/2016 08:33, Liang Li wrote: > > buffer_find_nonzero_offset() is a hot function during live migration. > > Now it use SSE2 instructions for optimization. For platform supports > > AVX2 instructions, use the AVX2 instructions for optimization can help > > to improve the performance of

Re: [Qemu-devel] [PATCH v5 0/2] add avx2 instruction optimization

2016-01-27 Thread Paolo Bonzini
On 27/01/2016 08:33, Liang Li wrote: > buffer_find_nonzero_offset() is a hot function during live migration. > Now it use SSE2 instructions for optimization. For platform supports > AVX2 instructions, use the AVX2 instructions for optimization can help > to improve the performance of zero page

[Qemu-devel] [PATCH v5 0/2] add avx2 instruction optimization

2016-01-26 Thread Liang Li
buffer_find_nonzero_offset() is a hot function during live migration. Now it use SSE2 instructions for optimization. For platform supports AVX2 instructions, use the AVX2 instructions for optimization can help to improve the performance of zero page checking about 30% comparing to SSE2. Live