Re: [PATCH] MIPS: Implement ieee754 NAN2008 emulation mode

[Philippe Mathieu-Daudé]

On 7/5/24 14:34, Jiaxun Yang wrote:
> Implement ieee754 NAN2008 emulation mode.
>
> When this mode is enabled, kernel will accept ELF file
> compiled for both NaN 2008 and NaN legacy, but if hardware
> does not have capability to match ELF's NaN mode, __own_fpu
> will fail for corresponding thread and fpuemu will then kick
> in.
>
> This mode trade performance for corretness, while maintaining

"correctness"

> support for both NaN mode regardless of hardware capability.
> It is useful for multilib installation that have both types
> of binary exist in system.
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> ---
>   Documentation/admin-guide/kernel-parameters.txt |  4 +++-
>   arch/mips/include/asm/fpu.h                     | 15 +++++++++++++++
>   arch/mips/kernel/elf.c                          |  4 ++++
>   arch/mips/kernel/fpu-probe.c                    | 10 +++++++++-
>   4 files changed, 31 insertions(+), 2 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>