On Feb 21, 2021, at 11:30, Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
> Can we tell people (in this Doc file) where to look up the values that can be
> used in xstate.enable and xstate.disable?
Perhaps add something like this with the change below:
“See comment before function fpu__init_parse_early_param() in
arch/x86/kernel/fpu/init.c."
/*
* The kernel parameter "xstate.enable='mask'" and "xstate.disable='mask'" have a
* mask value in a subset of XFEATURE_MASK_CONFIGURABLE.
*
* The longest parameter is 22 octal number characters with '0' prefix and an extra
* '\0' for termination.
*/
#define MAX_XSTATE_MASK_CHARS 24
/**
* fpu__init_parse_early_param() - parse the xstate kernel parameters
*
* Parse them early because fpu__init_system() is executed before
* parse_early_param().
*/
static void __init fpu__init_parse_early_param(void)
Thanks,
Chang
