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arch/arm64: Enable FPU for qemu-armv8a:netnsh_smp and netnsh_smp_hv

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When reading https://github.com/apache/nuttx-apps/pull/1793, I found a previous problem https://github.com/apache/nuttx-apps/pull/1454#discussion_r1045718067 now still exists on current master (inf in iperf bandwidth).

By step-by-step debugging, I found a value of 1000000.0 stored in register d8 is overwritten as 0 after context switch, then fdiv results in inf because of divided by 0. Finally I found that ARCH_FPU is not enabled while compiler is using FPU, and may lose values in floating-point registers.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
This commit is contained in:
Zhe Weng 2023-07-12 16:36:10 +08:00 committed by Alan Carvalho de Assis
parent ad6361f0cc
commit 3d5eae2497
2 changed files with 0 additions and 2 deletions
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boards/arm64/qemu/qemu-armv8a/configs/netnsh_smp/defconfig
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@ -5,7 +5,6 @@
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_ARCH_FPU is not set
CONFIG_ALLOW_BSD_COMPONENTS=y
CONFIG_ARCH="arm64"
CONFIG_ARCH_ARM64=y

1
boards/arm64/qemu/qemu-armv8a/configs/netnsh_smp_hv/defconfig
View file

@ -5,7 +5,6 @@
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_ARCH_FPU is not set
CONFIG_ALLOW_BSD_COMPONENTS=y
CONFIG_ARCH="arm64"
CONFIG_ARCH_ARM64=y