backport: feat: support rdna graphics card#7
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RevySR wants to merge 3 commits intoeswincomputing:linux-6.6.18-EIC7Xfrom
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backport: feat: support rdna graphics card#7RevySR wants to merge 3 commits intoeswincomputing:linux-6.6.18-EIC7Xfrom
RevySR wants to merge 3 commits intoeswincomputing:linux-6.6.18-EIC7Xfrom
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This is needed to support recent hardware in the amdgpu DRM driver. The FPU code in that driver is not performance-critical, so only provide the minimal support. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Link: https://lore.kernel.org/r/20231122030621.3759313-2-samuel.holland@sifive.com Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
Since it is not possible to incrementally add/remove extensions from the compiler's ISA string by appending arguments, any code that wants to modify the ISA string must recreate the whole thing. To support this, factor out the logic for generating the -march argument so it can be reused where needed. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Link: https://lore.kernel.org/r/20231122030621.3759313-3-samuel.holland@sifive.com Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
RISC-V uses kernel_fpu_begin()/kernel_fpu_end() like several other architectures. Enabling hardware FP requires overriding the ISA string for the relevant compilation units. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Link: https://lore.kernel.org/r/20231122030621.3759313-4-samuel.holland@sifive.com Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
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…ng/linux-stable:linux-6.6.18-EIC7X into linux-6.6.18-EIC7X Reviewed-on: http://10.100.130.109:3000/Upstream/linux-stable/pulls/7 Reviewed-by: ningyu <ningyu@eswincomputing.com> Reviewed-by: Joey Zheng <zhengyu@eswincomputing.com>
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