Created attachment 643046 [details] emerge --info .config was copied over from gentoo-sources-5.6.15 + make oldconfig. # make HOSTCC scripts/basic/fixdep HOSTCC arch/x86/tools/relocs_32.o HOSTCC arch/x86/tools/relocs_64.o HOSTCC arch/x86/tools/relocs_common.o HOSTLD arch/x86/tools/relocs HOSTCXX -fPIC scripts/gcc-plugins/structleak_plugin.o HOSTLLD -shared scripts/gcc-plugins/structleak_plugin.so HOSTCC scripts/sorttable HOSTCC scripts/asn1_compiler HOSTCC scripts/extract-cert HOSTCC scripts/mod/mk_elfconfig CC scripts/mod/empty.o MKELF scripts/mod/elfconfig.h HOSTCC scripts/mod/modpost.o CC scripts/mod/devicetable-offsets.s HOSTCC scripts/mod/file2alias.o HOSTCC scripts/mod/sumversion.o HOSTLD scripts/mod/modpost CC kernel/bounds.s CC arch/x86/kernel/asm-offsets.s CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh DESCEND objtool HOSTCC /usr/src/linux-5.7.0-gentoo/tools/objtool/fixdep.o HOSTLD /usr/src/linux-5.7.0-gentoo/tools/objtool/fixdep-in.o LINK /usr/src/linux-5.7.0-gentoo/tools/objtool/fixdep CC /usr/src/linux-5.7.0-gentoo/tools/objtool/exec-cmd.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/help.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/pager.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/parse-options.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/run-command.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/sigchain.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/subcmd-config.o LD /usr/src/linux-5.7.0-gentoo/tools/objtool/libsubcmd-in.o AR /usr/src/linux-5.7.0-gentoo/tools/objtool/libsubcmd.a CC /usr/src/linux-5.7.0-gentoo/tools/objtool/arch/x86/decode.o LD /usr/src/linux-5.7.0-gentoo/tools/objtool/arch/x86/objtool-in.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/builtin-check.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/builtin-orc.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/check.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/orc_gen.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/orc_dump.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/elf.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/special.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/objtool.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/libstring.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/libctype.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/str_error_r.o CC /usr/src/linux-5.7.0-gentoo/tools/objtool/librbtree.o LD /usr/src/linux-5.7.0-gentoo/tools/objtool/objtool-in.o LINK /usr/src/linux-5.7.0-gentoo/tools/objtool/objtool CHK include/generated/compile.h CC init/main.o CC init/version.o CC init/do_mounts.o CC init/noinitramfs.o CC init/calibrate.o CC init/init_task.o AR init/built-in.a AR usr/built-in.a CC arch/x86/entry/vdso/vma.o CC arch/x86/entry/vdso/vdso32-setup.o LDS arch/x86/entry/vdso/vdso.lds AS arch/x86/entry/vdso/vdso-note.o CC arch/x86/entry/vdso/vclock_gettime.o CC arch/x86/entry/vdso/vgetcpu.o VDSO arch/x86/entry/vdso/vdso64.so.dbg OBJCOPY arch/x86/entry/vdso/vdso64.so HOSTCC arch/x86/entry/vdso/vdso2c VDSO2C arch/x86/entry/vdso/vdso-image-64.c CC arch/x86/entry/vdso/vdso-image-64.o LDS arch/x86/entry/vdso/vdso32/vdso32.lds CC arch/x86/entry/vdso/vdso32/vclock_gettime.o AS arch/x86/entry/vdso/vdso32/note.o AS arch/x86/entry/vdso/vdso32/system_call.o AS arch/x86/entry/vdso/vdso32/sigreturn.o VDSO arch/x86/entry/vdso/vdso32.so.dbg OBJCOPY arch/x86/entry/vdso/vdso32.so VDSO2C arch/x86/entry/vdso/vdso-image-32.c CC arch/x86/entry/vdso/vdso-image-32.o AR arch/x86/entry/vdso/built-in.a CC arch/x86/entry/vsyscall/vsyscall_64.o arch/x86/entry/vsyscall/vsyscall_64.o: warning: objtool: emulate_vsyscall()+0x3a2: stack state mismatch: cfa1=7+56 cfa2=7+48 AS arch/x86/entry/vsyscall/vsyscall_emu_64.o AR arch/x86/entry/vsyscall/built-in.a AS arch/x86/entry/entry_64.o AS arch/x86/entry/thunk_64.o CC arch/x86/entry/syscall_64.o CC arch/x86/entry/common.o AS arch/x86/entry/entry_64_compat.o CC arch/x86/entry/syscall_32.o AR arch/x86/entry/built-in.a CC arch/x86/events/amd/core.o arch/x86/events/amd/core.o: warning: objtool: amd_pmu_handle_irq()+0x28: stack state mismatch: cfa1=7+8 cfa2=7+0 CC arch/x86/events/amd/uncore.o CC arch/x86/events/amd/ibs.o arch/x86/events/amd/ibs.o: warning: objtool: perf_ibs_init()+0x1f: can't find jump dest instruction at .text+0x31 make[3]: *** [scripts/Makefile.build:267: arch/x86/events/amd/ibs.o] Fehler 255 make[3]: *** Datei „arch/x86/events/amd/ibs.o“ wird gelöscht make[2]: *** [scripts/Makefile.build:488: arch/x86/events/amd] Fehler 2 make[1]: *** [scripts/Makefile.build:488: arch/x86/events] Fehler 2 make: *** [Makefile:1729: arch/x86] Error 2
Created attachment 643048 [details] kernel .config (kernel 5.7.0, Supermicro H8SGL, Opteron 6380)
I'm seeing the same errors on my AMD FX-6350 (Piledriver), which had CONFIG_MNATIVE=y set. I still see it changing to CONFIG_MPILEDRIVER=y. I believe your Opteron 6380 is also a Piledriver CPU. Based on https://bugs.gentoo.org/642924#c21 changing to CONFIG_MBULLDOZER=y "fixed" the issue.
5012_enable-cpu-optimizations-for-gcc91.patch --- a/arch/x86/Makefile 2019-12-15 18:16:08.000000000 -0500 + cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1) + cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2) + cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3) + cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4) everything with: -march=bdverX fails for me gcc8/gcc9/gcc10
(In reply to Ooblick from comment #2) > I'm seeing the same errors on my AMD FX-6350 (Piledriver), which had > CONFIG_MNATIVE=y set. I still see it changing to CONFIG_MPILEDRIVER=y. I > believe your Opteron 6380 is also a Piledriver CPU. > > Based on https://bugs.gentoo.org/642924#c21 changing to CONFIG_MBULLDOZER=y > "fixed" the issue. I can confirm this. Setting CONFIG_MBULLDOZER=y works. Yes, the Opteron 6380 is a Piledriver class CPU. <gentoo-sources-5.7.0 work fine with CONFIG_MNATIVE=y or CONFIG_MPILEDRIVER=y.
I was able to compile 5.7 kernel with this change in arch/x86/Makefile: @@ -127,7 +127,7 cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1) cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2) cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1) - cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2) + cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2 -mtune=bdver2) cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3) cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4) cflags-$(CONFIG_MZEN) += $(call cc-option,-march=znver1)
I'm having the same issue on 5.7.0 as well as 5.7.1 with an AMD FX 8350 (Bulldozer) chip. Changing from CONFIG_MNATIVE=y to CONFIG_MBULLDOZER=y solved it, like in comment #2 and comment #4.
Created attachment 644620 [details, diff] Drop TBM for bdver{2,3,4}
(In reply to Maxim Britov from comment #7) > Created attachment 644620 [details, diff] [details, diff] > Drop TBM for bdver{2,3,4} Interesting! So the gcc backend for this instruction is broken? Or kernels <5.7.0 do not make gcc generate this instruction? gcc's manual says TBM is an instruction only found in bdver{2,3,4}: >The following built-in functions are available when -mtbm is used. Both of them >generate the immediate form of the bextr machine instruction. >unsigned int __builtin_ia32_bextri_u32 (unsigned int, > const unsigned int); >unsigned long long __builtin_ia32_bextri_u64 (unsigned long long, > const unsigned long long);
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95671#c8
(In reply to Maxim Britov from comment #9) > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95671#c8 Thanks for taking it upstream!
` sys-kernel/gentoo-sources: Linux 5.7.7 and cpu opt patch update Mike Pagano sys-kernel/gentoo-sources: Linux 5.4.50 and cpu opt patch update Mike Pagano sys-kernel/gentoo-sources: Linux 4.19.131 and cpu opt patch update Mike Pagano sys-kernel/gentoo-sources: Linux 4.14.187 and update to cpu opt patch Mike Pagano `
I can confirm that 5.7.7 builds fine again with Piledriver setting for my Opteron 6380 as Maxims suggested config was integrated into genpatches-5.7-8.experimental and the other stable releases.
