| commit | b3d52804c591b478ec0620253c2bd71e4ff87bb9 | |
| author | Richard Henderson <richard.henderson@linaro.org> | |
| Fri, 23 Jul 2021 20:33:44 +0000 (23 10:33 -1000) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Tue, 27 Jul 2021 09:57:40 +0000 (27 10:57 +0100) | ||
| tree | 287bbaa7f2a03b6e837dae465cee9d75b1118dd7 | treesnapshot (tar.gz zip) |
| parent | ce440581c1446e56d911d83c9c3b760ae4f98b3e | commitdiff |
target/arm: Add sve-default-vector-length cpu property
Mirror the behavour of /proc/sys/abi/sve_default_vector_length
under the real linux kernel. We have no way of passing along
a real default across exec like the kernel can, but this is a
decent way of adjusting the startup vector length of a process.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/482
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210723203344.968563-4-richard.henderson@linaro.org
[PMM: tweaked docs formatting, document -1 special-case,
added fixup patch from RTH mentioning QEMU's maximum veclen.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mirror the behavour of /proc/sys/abi/sve_default_vector_length
under the real linux kernel. We have no way of passing along
a real default across exec like the kernel can, but this is a
decent way of adjusting the startup vector length of a process.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/482
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210723203344.968563-4-richard.henderson@linaro.org
[PMM: tweaked docs formatting, document -1 special-case,
added fixup patch from RTH mentioning QEMU's maximum veclen.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| docs/system/arm/cpu-features.rst | diffblobblamehistory | |
| target/arm/cpu.c | diffblobblamehistory | |
| target/arm/cpu.h | diffblobblamehistory | |
| target/arm/cpu64.c | diffblobblamehistory |