News for hackers. Stuff that matters.

A comment on Linux Address Space Isolation Revived After Lowering 70% Performance Hit to 13%. Parent comment

Re:Linux Address Space Isolation Revived After Lowering 70% ... by jeroenhd on Thursday August 14, 2025 @11:20AM (#44901465)
It was measured to have a performance impact of up to 10%, with even higher numbers for the nth percentile lows: https://www.tomshardware.com/news/windows-vbs-harms-performa...

Overhead should be minimal but something is preventing it from working as well as it theoretically should. AFAIK Microsoft has been improving VBS but I don't think it's completely fixed yet.

BF6 requiring VBS (or at least "VBS capable" systems) will probably force games to find a way to deal with VBS as much as they can, but for older titles it's not always a bad idea to turn off VBS to get a less stuttery experience.

[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by UltraSane on Thursday August 14, 2025 @11:51AM (#44901901)
VBS requires hyper-v to be enabled and it "owns" the CPU virtualization hardware so I can't use VMware workstation which is very annoying.
[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by davikr on Thursday August 14, 2025 @12:16PM (#44902270)
Same. Have to disable VBS for VirtualBox, and it gets more and more obscure with each update because some features like Windows Hello force it back on.
[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by bpye on Thursday August 14, 2025 @12:28PM (#44902420)
VMWare Workstation [0] (and I thought VirtualBox - though I can't find any official docs [1]) should be able to use the Hyper-V hypervisor via WHP.

QEMU can also use WHP via --accel whpx.

[0] - https://techcommunity.microsoft.com/blog/virtualization/vmwa...

[1] - https://www.impostr-labs.com/use-hyper-v-and-virtualbox-toge...

[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by UltraSane on Thursday August 14, 2025 @03:59PM (#44904945)
As a network engineer I mainly like VMware workstation because of its awesome virtual network editor that lets me easily build complex topologies but it doesn't work when you use Hyper-V.
[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by deburo on Thursday August 14, 2025 @02:51PM (#44904153)
It works indeed, but the performance drop is quite drastic.
[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by malkia on Thursday August 14, 2025 @12:47PM (#44902678)
BF6 requires this? Is there any official article/link about this? Thank you!
[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by password4321 on Thursday August 14, 2025 @01:29PM (#44903217)
The closest so far (I don't know the specifics of VBS vs. Secure Boot):

https://news.ycombinator.com/item?id=44805565 Secure Boot is a requirement to play Battlefield 6 on PC

> It's the Javelin Anti cheat system which forces the use of secure boot

[ Parent | on HN ]
Re:Linux Address Space Isolation Revived After Lowering 70% ... by malkia on Thursday August 14, 2025 @02:08PM (#44903679)
Thanks! I've found this https://www.reddit.com/r/Battlefield/comments/1mebjom/tpm_20...
[ Parent | on HN ]