Broadwell CPU support - new features

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Technologov
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Broadwell CPU support - new features

Post by Technologov »

According to some source:
http://www.tomshardware.com/reviews/int ... 514-2.html
And
http://www.anandtech.com/show/10158/the ... 4-review/5
And

https://books.google.com.ua/books?id=Io ... Exception+(%23VE&source=bl&ots=dM48cVdRDL&sig=vLkSBWeZsLot96wsbD0hdKcKVJw&hl=en&sa=X&ved=0ahUKEwidlvG88LzNAhXLkSwKHcY4AeYQ6AEIHDAB#v=onepage&q=Broadwell%20Virtualization%20Exception%20(%23VE&f=false

Intel has introduced Virtualization Exception in Broadwell CPU to improve virtualization performance.
What VirtualBox team thinks of it? Useful? Is it available in VirtualBox 5.1 ?
Yet another Broadwell feature is TSX, transactional memory, which may or may not improve performance.
APIC-V + posted interrupts can improve your I/O APIC emulation even further?

-Technologov
michaln
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Re: Broadwell CPU support - new features

Post by michaln »

Technologov wrote:APIC-V + posted interrupts can improve your I/O APIC emulation even further?
It certainly could! But how many people have a CPU with this feature? Hint: It's Xeon only. It's actually been there since Haswell, and it is a rather nice feature, but unless you are in the tiny minority with a Haswell E or a Xeon, you don't have it. Desktop/laptop Skylakes don't have it either.
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