On Mon, Feb 17, 2025 at 10:53:55PM +0000, jaywang-amazon wrote: > From: David Woodhouse <dwmw@xxxxxxxxxxxx> > > Leaving the PIT interrupt running can cause noticeable steal time for > virtual guests. The VMM generally has a timer which toggles the IRQ input > to the PIC and I/O APIC, which takes CPU time away from the guest. Even > on real hardware, running the counter may use power needlessly (albeit > not much). > > Make sure it's turned off if it isn't going to be used. > > Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx> > Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Tested-by: Michael Kelley <mhkelley@xxxxxxxxxxx> > Link: https://lore.kernel.org/all/20240802135555.564941-1-dwmw2@xxxxxxxxxxxxx > > (cherry picked from commit 70e6b7d9ae3c63df90a7bba7700e8d5c300c3c60) > Cc: stable@xxxxxxxxxxxxxxx #v6.1 > Signed-off-by: jaywang-amazon <wanjay@xxxxxxxxxx> We need a real name, not a fake-company name please. thanks, greg k-h
