Re: [PATCH v3 02/23] x86/numa: Add 'nohmat' option

Randy Dunlap
2020-08-01T03:51:28Z

On 7/31/20 8:25 PM, Dan Williams wrote:
> Disable parsing of the HMAT for debug, to workaround broken platform
> instances, or cases where it is otherwise not wanted.
>
> ---
> arch/x86/mm/numa.c | 2 ++
> drivers/acpi/numa/hmat.c | 8 +++++++-
> include/acpi/acpi_numa.h | 8 ++++++++
> 3 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
> index 87c52822cc44..f3805bbaa784 100644
> --- a/arch/x86/mm/numa.c
> +++ b/arch/x86/mm/numa.c
> @@ -41,6 +41,8 @@ static __init int numa_setup(char *opt)
> return numa_emu_cmdline(opt + 5);
> if (!strncmp(opt, "noacpi", 6))
> disable_srat();
> + if (!strncmp(opt, "nohmat", 6))
> + disable_hmat();

Hopefully that will be documented in
Documentation/x86/x86_64/boot-options.rst.

> return 0;
> }
> early_param("numa", numa_setup);

thanks.
--
~Randy