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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2024-06-12 11:38:19 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2024-07-12 14:09:25 +0300 |
| commit | 59649de96f21dfb0518faa8feaa3d05c2d81b042 (patch) | |
| tree | 1d46028b969dcb9453ec73c647f7d8a7a22f1a8a /Documentation/admin-guide/kernel-parameters.txt | |
| parent | 9c7a86c935074525f24cc20e78a7d5150e4600e3 (diff) | |
| download | linux-59649de96f21dfb0518faa8feaa3d05c2d81b042.tar.xz | |
MIPS: Implement ieee754 NAN2008 emulation mode
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@linaro.org>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index b600df82669d..c49336b8f031 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2022,7 +2022,7 @@ for the device. By default it is set to false (0). ieee754= [MIPS] Select IEEE Std 754 conformance mode - Format: { strict | legacy | 2008 | relaxed } + Format: { strict | legacy | 2008 | relaxed | emulated } Default: strict Choose which programs will be accepted for execution @@ -2042,6 +2042,8 @@ by the FPU relaxed accept any binaries regardless of whether supported by the FPU + emulated accept any binaries but enable FPU emulator + if binary mode is unsupported by the FPU. The FPU emulator is always able to support both NaN encodings, so if no FPU hardware is present or it has |