isolcpus in grub_CMDLINE set/unset in running system ?

[MaDDeePee]

Hello,

for best QEMU/KVM VFIO gaming VM experience im doing some GRUB_CMDLINE tweaks:

Code: Select all

isolcpus=8-15,24-31
nohz_full=8-15,24-31
rcu_nocbs=8-15,24-31 

(Isolation, tickless, no-callback)

Is it possible to set or unset this within the running kernel? (for example by overwriting smth in /proc or /dev using a bash script) ?