On 25.10.23 12:34, Borislav Petkov wrote:
On Thu, Oct 19, 2023 at 11:15:16AM +0200, Juergen Gross wrote:+/* Low-level backend functions usable from alternative code replacements. */ +DEFINE_ASM_FUNC(x86_nop, "", .entry.text); +EXPORT_SYMBOL_GPL(x86_nop);This is all x86 code so you don't really need the "x86_" prefix - "nop" is perfectly fine.+noinstr void x86_BUG(void) +{ + BUG(); +} +EXPORT_SYMBOL_GPL(x86_BUG);That export is needed for? Paravirt stuff in modules? It builds here without it - I guess I need to do an allmodconfig.
Turns out it is needed after all. With patch 4 applied I get: ERROR: modpost: "BUG_func" [arch/x86/events/amd/power.ko] undefined! ERROR: modpost: "BUG_func" [arch/x86/kernel/cpu/mce/mce-inject.ko] undefined! ERROR: modpost: "BUG_func" [arch/x86/kernel/cpuid.ko] undefined! ERROR: modpost: "BUG_func" [arch/x86/kvm/kvm.ko] undefined! ERROR: modpost: "BUG_func" [arch/x86/kvm/kvm-intel.ko] undefined! ERROR: modpost: "BUG_func" [arch/x86/kvm/kvm-amd.ko] undefined! ERROR: modpost: "BUG_func" [fs/nfsd/nfsd.ko] undefined! ERROR: modpost: "BUG_func" [crypto/aes_ti.ko] undefined! ERROR: modpost: "BUG_func" [drivers/video/fbdev/uvesafb.ko] undefined! ERROR: modpost: "BUG_func" [drivers/video/vgastate.ko] undefined! Juergen
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