On Thu, Mar 28, 2024 at 07:09:13AM +0100, Arnd Bergmann wrote: > On Thu, Mar 28, 2024, at 06:51, Vineet Gupta wrote: > > On 3/27/24 09:22, Arnd Bergmann wrote: > >> On Wed, Mar 27, 2024, at 16:39, David Hildenbrand wrote: > >>> On 27.03.24 16:21, Peter Xu wrote: > >>>> On Wed, Mar 27, 2024 at 02:05:35PM +0100, David Hildenbrand wrote: > >>>> > >>>> I'm not sure what config you tried there; as I am doing some build tests > >>>> recently, I found turning off CONFIG_SAMPLES + CONFIG_GCC_PLUGINS could > >>>> avoid a lot of issues, I think it's due to libc missing. But maybe not the > >>>> case there. > >>> CCin Arnd; I use some of his compiler chains, others from Fedora directly. For > >>> example for alpha and arc, the Fedora gcc is "13.2.1". > >>> But there is other stuff like (arc): > >>> > >>> ./arch/arc/include/asm/mmu-arcv2.h: In function 'mmu_setup_asid': > >>> ./arch/arc/include/asm/mmu-arcv2.h:82:9: error: implicit declaration of > >>> function 'write_aux_reg' [-Werro > >>> r=implicit-function-declaration] > >>> 82 | write_aux_reg(ARC_REG_PID, asid | MMU_ENABLE); > >>> | ^~~~~~~~~~~~~ > >> Seems to be missing an #include of soc/arc/aux.h, but I can't > >> tell when this first broke without bisecting. > > > > Weird I don't see this one but I only have gcc 12 handy ATM. > > > > gcc version 12.2.1 20230306 (ARC HS GNU/Linux glibc toolchain - > > build 1360) > > > > I even tried W=1 (which according to scripts/Makefile.extrawarn) should > > include -Werror=implicit-function-declaration but don't see this still. > > > > Tomorrow I'll try building a gcc 13.2.1 for ARC. > > David reported them with the toolchains I built at > https://mirrors.edge.kernel.org/pub/tools/crosstool/ > I'm fairly sure the problem is specific to the .config > and tree, not the toolchain though. This happens with defconfig and both gcc 12.2.0 and gcc 13.2.0 from your crosstools. I also see these on the current Linus' tree: arc/kernel/ptrace.c:342:16: warning: no previous prototype for 'syscall_trace_enter' [-Wmissing-prototypes] arch/arc/kernel/kprobes.c:193:15: warning: no previous prototype for 'arc_kprobe_handler' [-Wmissing-prototypes] This fixed the warning about write_aux_reg for me, probably Vineet would want this include somewhere else... diff --git a/arch/arc/include/asm/mmu-arcv2.h b/arch/arc/include/asm/mmu-arcv2.h index ed9036d4ede3..0fca342d7b79 100644 --- a/arch/arc/include/asm/mmu-arcv2.h +++ b/arch/arc/include/asm/mmu-arcv2.h @@ -69,6 +69,8 @@ #ifndef __ASSEMBLY__ +#include <asm/arcregs.h> + struct mm_struct; extern int pae40_exist_but_not_enab(void); > >>> or (alpha) > >>> > >>> WARNING: modpost: "saved_config" [vmlinux] is COMMON symbol > >>> ERROR: modpost: "memcpy" [fs/reiserfs/reiserfs.ko] undefined! > >>> ERROR: modpost: "memcpy" [fs/nfs/nfs.ko] undefined! > >>> ERROR: modpost: "memcpy" [fs/nfs/nfsv3.ko] undefined! > >>> ERROR: modpost: "memcpy" [fs/nfsd/nfsd.ko] undefined! > >>> ERROR: modpost: "memcpy" [fs/lockd/lockd.ko] undefined! > >>> ERROR: modpost: "memcpy" [crypto/crypto.ko] undefined! > >>> ERROR: modpost: "memcpy" [crypto/crypto_algapi.ko] undefined! > >>> ERROR: modpost: "memcpy" [crypto/aead.ko] undefined! > >>> ERROR: modpost: "memcpy" [crypto/crypto_skcipher.ko] undefined! > >>> ERROR: modpost: "memcpy" [crypto/seqiv.ko] undefined! > > > > Are these from ARC build or otherwise ? > > This was arch/alpha. > > Arnd -- Sincerely yours, Mike.
