On Wed, Jun 12, 2024 at 09:38:19AM +0100, 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 correctness, while maintaining > support for both NaN mode regardless of hardware capability. > It is useful for multilib installation that have both types > of binary exist in system. > > Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx> > Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> > --- > Changes in v3: > - Fix typo in commit message > - Collect R-b tags > - Link to v2: https://lore.kernel.org/r/20240511-mips_ieee754_emul-v2-1-af796ea21ef0@xxxxxxxxxxx > > Changes in v2: > - Fix a typo > - Link to v1: https://lore.kernel.org/r/20240507-mips_ieee754_emul-v1-1-1dc7c0d13cac@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 | 9 ++++++++- > 4 files changed, 30 insertions(+), 2 deletions(-) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
