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Inaccurate CPUID bits in : https://wiki.osdev.org/SSE https://forum.osdev.org/viewtopic.php?f=6&t=56491 |
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Author: | devc1 [ Sun Sep 18, 2022 12:12 pm ] |
Post subject: | Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
Faulty CPUID Bits written in osdev : https://wiki.osdev.org/SSE Straight forward from the CPUID page in wikipedia, https://en.wikipedia.org/wiki/CPUID#EAX ... d_Features - EDX[26] is the IBRS_IBPB / spec_ctrl features, not AVX2 - AVX2 is detected through CPUID [EAX=7, ECX=0] EBX Bit 5 - AVX512 Separated features are detected also through CPUIDEX 7, it is easier to detect AVX512 just by checking the AVX512F Bit (AVX-512 Foundation) in EBX[16] (SubFunction 0). Devc1, |
Author: | Demindiro [ Sun Sep 18, 2022 12:16 pm ] |
Post subject: | Re: Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
Feel free to amend the page. |
Author: | devc1 [ Sun Sep 18, 2022 2:22 pm ] |
Post subject: | Re: Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
That's the problem ! everyone tells me to create/edit pages but I have no permissions. |
Author: | Octocontrabass [ Sun Sep 18, 2022 3:05 pm ] |
Post subject: | Re: Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
Have you read this yet? |
Author: | devc1 [ Sun Sep 18, 2022 3:15 pm ] |
Post subject: | Re: Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
So I joined but it still gives me the message : You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page: |
Author: | devc1 [ Sun Sep 18, 2022 3:17 pm ] |
Post subject: | Re: Inaccurate CPUID bits in : https://wiki.osdev.org/SSE |
Done, now I have editing rights ! Thanks |
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