Messages in this thread | | | Date | Mon, 18 Jan 2021 13:13:27 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 3/4] x86/fpu: Make the EFI FPU calling convention explicit |
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On Sun, Jan 17, 2021 at 10:20:40PM -0800, Andy Lutomirski wrote: > EFI uses kernel_fpu_begin() to conform to the UEFI calling convention. > This specifically requires initializing FCW, whereas no sane 64-bit kernel > code should use legacy 387 operations that reference FCW. > > Add KFPU_EFI to make this self-documenting, and use it in the EFI code.
I'd prefer if you slap a comment over the kernel_fpu_begin() calls in efi instead of adding a separate define etc.
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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