[vfio-users] Spectre, meltdown what's the performance implication for vga-passthrough gaming setups?

[Patrick O'Callaghan]

On Sun, 2018-01-07 at 11:28 +0000, Ivan Volosyuk wrote:
> From what I heard virtualization setups suffer the most from the vulnerabilities. After virtualized windows is patched as well as host linux what is the expected slowdown for gaming? I have pretty much zero understanding how much syscall/interrupt heavy qemu/kvm with vfio. 
> Is it time to urgently switch to AMD CPU?

I have patched Linux host and patched Windows guest and haven't noticed
anything so far. Games are unlikely to be severely slowed down as much
of the work is done by the GPU with relatively few system calls.

AMD CPUs are not immune from Spectre.

poc