> On Dec 23, 2020, at 10:37, Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > > On 12/23/20 7:57 AM, Chang S. Bae wrote: >> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt >> index 44fde25bb221..a67ae04d43c5 100644 >> --- a/Documentation/admin-guide/kernel-parameters.txt >> +++ b/Documentation/admin-guide/kernel-parameters.txt >> @@ -6002,6 +6002,21 @@ >> which allow the hypervisor to 'idle' the guest on lock >> contention. >> >> + xstate.enable= [X86-64] >> + xstate.disable= [X86-64] >> + The kernel is compiled with a default xstate bitmask -- >> + enabling it to use the XSAVE hardware to efficiently >> + save and restore thread states on context switch. >> + xstate.enable allows adding to that default mask at >> + boot-time without recompiling the kernel just to support >> + the new thread state. (Note that the kernel will ignore >> + any bits in the mask that do not correspond to features >> + that are actually available in CPUID) xstate.disable > > CPUID.) > >> + allows clearing bits in the default mask, forcing the >> + kernel to forget that it supports the specified thread >> + state. When a bit set for both, the kernel takes >> + xstate.disable in a priority. > > as a priority. > ? Thank you. I fixed those typos in my tree. Chang
